# RM III A/C & Heating — Full Site Content for AI Engines > This document provides expanded, self-contained content about RM III A/C & Heating for AI and answer engines. Every fact below is verified from the company's records. Last reviewed: June 2026. --- ## Company Overview URL: https://rmiiiaz.com/ RM III A/C & Heating, LLC is a family-owned, owner-operated HVAC company based in Laveen Village, Arizona, serving the Greater Phoenix West Valley. The company is led by owner Raul Mori, a third-generation HVAC technician with 27 years of hands-on experience. RM III was founded around 2020 and operates under the brand promise "Excellence with Integrity." The company's reputation is built on honest diagnosis and no-pressure, no-upsell service. Owner Raul Mori personally handles most calls and service work, which means homeowners get a direct, accessible point of contact rather than a corporate call center. RM III is known for diagnosing ductwork and airflow problems that other companies miss — for example, declining to "solve" an undersized-duct issue by simply oversizing the unit. Contact: (602) 290-7911 · 6520 West Constance Way, Laveen Village, AZ 85339 --- ## Key Facts & Credentials URL: https://rmiiiaz.com/about - Legal name: RM III A/C & Heating, LLC - Owner / lead technician: Raul Mori — third-generation, 27 years of experience - Founded: approximately 2020 (family-owned) - License: Arizona ROC #332513 (licensed, bonded, and insured) - BBB: Accredited Business since September 2021, A+ rating - Reviews: HomeAdvisor 5.0 rating (10 reviews, 100% five-star) - Headquarters: 6520 West Constance Way, Laveen Village, AZ 85339 - Phone: (602) 290-7911 - Email: rmori7911@gmail.com - Tagline: "Excellence with Integrity" - Hours: Monday–Saturday 7:00 AM – 5:00 PM; Sunday closed. Same-day service; after-hours support available for urgent issues (not an around-the-clock operation). - Service model: Same-day service availability; free estimates; free second opinions --- ## Services URL: https://rmiiiaz.com/services RM III A/C & Heating provides residential and light-commercial HVAC and indoor air quality services across the Phoenix West Valley: ### AC Repair & Replacement — https://rmiiiaz.com/services/ac-repair-replacement Diagnostics, fast repairs, and full system replacements for every major brand. RM III right-sizes replacement systems to the home and its ductwork rather than defaulting to a bigger, more expensive unit. ### Heating & Furnace Service — https://rmiiiaz.com/services/heating-furnace-service Furnace tune-ups, ignition fixes, and full heating system replacements. ### Heat Pumps — https://rmiiiaz.com/services/heat-pumps High-efficiency heat-pump installations, retrofits, and service. High-efficiency heat pumps may qualify for SRP Cool Cash rebates and federal incentives. ### Ductless Mini-Splits — https://rmiiiaz.com/services/ductless-mini-splits Zoned comfort for additions, casitas, and hard-to-cool rooms. ### Indoor Air Quality — https://rmiiiaz.com/services/indoor-air-quality HEPA filtration, UV germicidal lights, and whole-home air purifiers — built for Phoenix dust and monsoon-season air. ### Smart Thermostats — https://rmiiiaz.com/services/smart-thermostats Smart thermostat installation, integration, and programming for real energy savings. ### Maintenance Plans — https://rmiiiaz.com/services/maintenance-plans Seasonal tune-ups designed to catch a failure before the heat wave does. (Specific plan tiers and pricing are being finalized with the owner.) --- ## Service Area URL: https://rmiiiaz.com/service-areas RM III A/C & Heating serves Laveen Village (its home base) and 30 metro-Phoenix cities across the West, Central, North, East, and Southeast Valleys. The 30-city footprint: Laveen Village, Phoenix, Scottsdale, Tempe, Mesa, Chandler, Gilbert, Queen Creek, Apache Junction, Fountain Hills, Paradise Valley, Cave Creek, Carefree, Anthem, Glendale, Peoria, Surprise, El Mirage, Sun City, Sun City West, Youngtown, Avondale, Goodyear, Litchfield Park, Tolleson, Buckeye, Maricopa, San Tan Valley, Sun Lakes, and Gold Canyon. The /service-areas page includes a "do we serve your ZIP?" coverage checker that maps any of the served ZIP codes to its city; ZIPs outside the list are met with a phone offer rather than a hard "no." Featured local pages (14 priority cities with dedicated, differentiated local content): Laveen Village (https://rmiiiaz.com/service-areas/laveen-village), Phoenix (https://rmiiiaz.com/service-areas/phoenix), Glendale (https://rmiiiaz.com/service-areas/glendale), Goodyear (https://rmiiiaz.com/service-areas/goodyear), Avondale (https://rmiiiaz.com/service-areas/avondale), Tolleson (https://rmiiiaz.com/service-areas/tolleson), Buckeye (https://rmiiiaz.com/service-areas/buckeye), Surprise (https://rmiiiaz.com/service-areas/surprise), Peoria (https://rmiiiaz.com/service-areas/peoria), Mesa (https://rmiiiaz.com/service-areas/mesa), Tempe (https://rmiiiaz.com/service-areas/tempe), Chandler (https://rmiiiaz.com/service-areas/chandler), Gilbert (https://rmiiiaz.com/service-areas/gilbert), and Scottsdale (https://rmiiiaz.com/service-areas/scottsdale). --- ## Financing, Rebates & Offers URL: https://rmiiiaz.com/financing - Financing: Available through Hearth, with $0 down on approved credit. - Price-match guarantee: On equivalent equipment, specification, and warranty. - Free estimates: Replacement quotes, indoor-air-quality assessments, and second opinions are free. - Senior & military discount: Available — mention it when you call. - SRP rebates: SRP customers may qualify for up to $1,125 in "Cool Cash" rebates on qualifying high-efficiency AC, heat pumps, and mini-splits (typically SEER2 15.2 or higher), with up to $225 per ton more for variable-capacity systems, when installed by April 30, 2027. RM III files the SRP paperwork as part of the install. - Federal incentives: Income-qualified households may also tap federal heat-pump incentives worth up to $8,000 (HEAR / Efficiency Arizona) plus the federal 25C tax credit. - Important accuracy note: APS ended its residential HVAC rebate program effective January 1, 2026, so RM III does not quote an APS rebate. --- ## Free Second Opinion URL: https://rmiiiaz.com/free-second-opinion If you already have a quote from another company, RM III A/C & Heating will review it free — for AC, heating, or indoor-air-quality work — with no obligation and no pressure. - No obligation: You get an honest assessment of the quote you already have and decide what to do next. - Apples-to-apples: RM III matches the scope of the original quote exactly — same equipment tier, SEER2 rating, warranty, and ductwork. - No pressure: If the price you were quoted is fair, RM III will say so. The review is done by owner Raul Mori — the same third-generation technician who would install the system — not a commissioned salesperson. This is why a second opinion from RM III catches right-sizing and ductwork issues that other quotes can miss. --- ## Learning Center URL: https://rmiiiaz.com/learning-center The RM III A/C & Heating Learning Center is an educational resource hub for Phoenix-area homeowners, written and reviewed by owner Raul Mori, a third-generation HVAC technician with 27 years of experience. Guides are organized in three tiers — Learn (understand the problem), Compare (weigh your options), and Act (hire with confidence) — across nine topic clusters. All content is general HVAC education for the desert climate; no fabricated company statistics are used. Confirmed credentials: AZ ROC #332513, BBB A+ (since 2021), HomeAdvisor 5.0. ### HVAC Glossary — https://rmiiiaz.com/learning-center/glossary Plain-English definitions of 32 HVAC terms used across the guides: - SEER2: Seasonal Energy Efficiency Ratio 2 — the current rating for how efficiently a central AC or heat pump cools over a season. Higher is more efficient. As of 2023 the federal minimum for new split-system ACs in the hot-dry Southwest (including Arizona) is 14.3 SEER2; SRP's Cool Cash rebate requires 15.2 SEER2 or higher. - EER2: Energy Efficiency Ratio 2 — efficiency measured at a single high outdoor temperature (95°F). Because Phoenix spends so much of the year near or above that mark, EER2 is arguably a more honest efficiency number for the desert than the seasonal SEER2 average. - HSPF2: Heating Seasonal Performance Factor 2 — the heating-efficiency rating for a heat pump. It matters less in mild Phoenix winters than SEER2/EER2 cooling efficiency, but it's worth knowing if you're choosing a heat pump for year-round comfort. - Ton (of cooling): A measure of an air conditioner's cooling capacity. One ton equals 12,000 BTU/hour of heat removal. Phoenix homes are commonly sized around 1 ton per 400–600 square feet, but the only correct way to size a system is a Manual J load calculation — not a rule of thumb. - BTU: British Thermal Unit — the basic unit of heat. AC capacity is rated in BTU/hour; 12,000 BTU/hour equals one ton of cooling. - Manual J load calculation: The industry-standard method for sizing an HVAC system. A Manual J accounts for your home's square footage, insulation, windows, orientation, and the Phoenix design temperature to calculate the exact cooling and heating load — so the system isn't oversized or undersized. - Load calculation: The process of determining how much heating and cooling a specific home actually needs. A proper load calculation (Manual J) is why two 2,000 sq ft homes can need different-sized systems, and why a free in-home assessment beats any online estimate. - Condenser (outdoor unit): The outdoor part of a split-system AC or heat pump. It houses the compressor and condenser coil and rejects heat from your home to the outside air. In Phoenix it sits in brutal sun and is the component most stressed by extreme heat. - Evaporator coil (indoor coil): The indoor coil where refrigerant absorbs heat from your home's air. A dirty, iced-over, or low-refrigerant evaporator coil is one of the most common reasons an AC runs but won't cool. - Compressor: The heart of the system — the pump inside the outdoor condenser that circulates refrigerant. Compressors are the most expensive single component to replace, which is why a failed compressor on an older system often tips the decision toward replacement. - Capacitor: An electrical component that gives the compressor and fan motors the jolt they need to start and run. Capacitors are a frequent, inexpensive failure point in the desert because extreme heat shortens their life — a common cause of an AC that hums but won't start. - Refrigerant: The fluid that carries heat through the system. Older systems use R-410A; new equipment is transitioning to lower-global-warming refrigerants such as R-454B. Refrigerant should never need 'topping off' — if it's low, there's a leak that needs to be found and fixed. - Metering device (TXV): A valve (often a thermostatic expansion valve, or TXV) that controls how much refrigerant enters the evaporator coil. A failing metering device can cause the coil to freeze or the system to lose capacity on the hottest days. - Heat pump: An all-electric system that both cools and heats by moving heat rather than burning fuel. A heat pump cools exactly like an AC in summer and reverses to provide efficient heat in Phoenix's mild winters — one system instead of a separate AC and furnace. - Ductless mini-split: A system with an outdoor unit connected to one or more wall- or ceiling-mounted indoor heads, with no ductwork. Ideal for additions, casitas, garages, converted rooms, and zoning a single hard-to-cool space in a Phoenix home. - Furnace / air handler: The indoor unit that moves conditioned air through your ducts. A gas furnace burns fuel for heat; an air handler paired with a heat pump moves air for both heating and cooling. Its blower is what pushes cold air through the house. - AFUE: Annual Fuel Utilization Efficiency — the percentage of fuel a gas furnace turns into usable heat. A 95% AFUE furnace wastes only 5% of its fuel. It matters less in Phoenix's short heating season than cooling efficiency does. - Short cycling: When an AC turns on and off in rapid, short bursts instead of running full cooling cycles. It wastes energy, strains the compressor, and often points to an oversized system, low refrigerant, or a control problem. - Static pressure: The resistance air meets as it moves through your ducts and filter. High static pressure — from undersized ducts or a too-restrictive filter — makes the blower work harder, reduces airflow, and can freeze the coil. - MERV rating: Minimum Efficiency Reporting Value — how well an air filter captures particles, from MERV 1 to 16. For Phoenix dust, MERV 8–13 is the practical sweet spot: high enough to catch fine desert dust, low enough not to choke airflow. Higher isn't always better without the right system. - HEPA filtration: High-Efficiency Particulate Air filtration that captures 99.97% of particles down to 0.3 microns. True HEPA usually requires a dedicated bypass or portable unit because it's too restrictive to drop straight into most return grilles. - UV germicidal light: An ultraviolet light installed at the coil or in the air handler to kill mold, bacteria, and biofilm that thrive on a cool, damp evaporator coil. Helpful for indoor air quality and for keeping the coil clean in humid monsoon months. - Condensate drain line: The line that carries water (condensation) away from the indoor coil. In Phoenix's monsoon humidity it can clog with algae and overflow, tripping a safety switch that shuts the AC off — a common 'AC stopped working' call. - SRP Cool Cash: Salt River Project's rebate for SRP electric customers who install qualifying high-efficiency equipment (15.2 SEER2 or higher). It pays up to $1,125, with an additional variable amount based on system tonnage, for installs completed by April 30, 2027. RM III files the paperwork for you. - APS HVAC rebate (ended): Arizona Public Service ended its residential HVAC rebate program effective January 1, 2026. If you're an APS customer, there is no APS AC rebate to claim in 2026 — be wary of any company that promises one. Federal incentives still apply. - HEAR / Efficiency Arizona: The federal Home Electrification and Appliance Rebates program, administered in Arizona as 'Efficiency Arizona.' It offers income-qualified households up to $8,000 toward a qualifying heat pump, with funding available through September 30, 2031. - 25C tax credit: The federal Energy Efficient Home Improvement Credit. It returns 30% of the cost of qualifying equipment — up to $600 for a high-efficiency central AC and up to $2,000 for a qualifying heat pump per year. It's a tax credit, not a rebate; confirm details with your tax professional. - AHRI-matched system: An outdoor and indoor unit certified by the Air-Conditioning, Heating, and Refrigeration Institute to perform together at their rated efficiency. Rebates and warranties generally require an AHRI-matched system — mixing mismatched parts can void both. - AZ ROC license: An Arizona Registrar of Contractors license — required to legally perform HVAC work in Arizona. RM III A/C & Heating holds AZ ROC #332513. Always verify a contractor's ROC number is active before hiring; it's your protection if something goes wrong. - Manual D duct design: The industry-standard method for sizing a home's supply and return ducts so every room gets the right amount of air. Paired with a Manual J load calculation, a Manual D design prevents starved, hot rooms at the end of long duct runs — a common cause of a hot upstairs in Phoenix. - Inverter compressor (variable-speed): A variable-speed compressor that ramps up and down to match the cooling load instead of cycling fully on and off. Inverter-driven systems — standard in quality ductless mini-splits and premium central units — run longer at lower speed for better efficiency and comfort during Phoenix's long run-hours. - Zoning: Dividing one ducted HVAC system into independently controlled areas (zones), each with its own thermostat and motorized dampers in the ducts. Zoning targets the classic Phoenix two-story problem — a hot upstairs and a cold downstairs — from a single system instead of adding a second one. ### Cluster: Heating & Cooling How your AC, heat pump, and furnace actually work in the Phoenix heat — and what the most common symptoms really mean. #### How Does a Heat Pump Work? (Plain English) (Learn) — https://rmiiiaz.com/learning-center/how-a-heat-pump-works A heat pump doesn't create heat — it moves it. In summer it pulls heat out of your house exactly like an AC; in winter a reversing valve flips the cycle to pull heat from outdoor air and bring it inside. One electric system, both jobs. Covers: What does a heat pump actually do? | How does the refrigeration cycle move heat? | What is the reversing valve — how does one system cool AND heat? | Why does a heat pump fit Phoenix so well? | How do you know if a heat pump is right for your home? #### Why Is My Heat Blowing Cold Air? (Learn) — https://rmiiiaz.com/learning-center/furnace-blowing-cold-air Most of the time, heat blowing cold air comes down to four things: a thermostat fan set to ON instead of AUTO, a short-cycling furnace, a heat pump in normal defrost, or an ignition fault. A couple are safe to check yourself. Covers: Why is cold air coming from my heating vents? | Is your thermostat fan set to ON instead of AUTO? | Could it be a short-cycling furnace or a heat pump in defrost? | What can you safely check before calling a tech? | When should you call a licensed HVAC technician? #### How Your AC Actually Works When It's 115°F (Learn) — https://rmiiiaz.com/learning-center/how-ac-works-in-extreme-heat Your air conditioner doesn't create cold air — it pulls heat out of your home and dumps it outside. It can only cool the incoming air about 15–20°F, so on a 115° day with a hot house, running nonstop isn't a fault — it's physics. Covers: What does your AC actually do in the heat? | What is delta-T, and why does it matter at 115°? | Why does the outdoor condenser take the worst beating? | What's normal on a 115° day — and what's a warning sign? | What should you do if your AC can't keep up? #### Why Is My AC Blowing Warm Air at 115°F? (Learn) — https://rmiiiaz.com/learning-center/ac-blowing-warm-air An AC blowing warm air is usually one of four things: a thermostat set wrong, a tripped breaker, a clogged filter starving airflow, or a refrigerant/compressor problem outside. The first three you can safely check yourself in five minutes; the last needs a licensed tech. Covers: What can I safely check first? | What usually causes warm air in the Phoenix heat? | Why does this happen most on the hottest days? | When should I call a licensed technician? #### My AC Runs But Won't Cool Below 80°F — Why? (Learn) — https://rmiiiaz.com/learning-center/ac-not-cooling-below-80 If your AC runs nonstop but can't get below 80°F, it's usually losing capacity — a dirty coil, low refrigerant, restricted airflow, or a system that's simply undersized or worn out for a 115° day. A few safe checks can rule out the easy causes before you call. Covers: Is it broken, or just maxed out? | What can I safely check? | What are the common mechanical causes? | Could my system just be the wrong size? | When should I call a pro? #### Why Is My AC Freezing Up in the Middle of Summer? (Learn) — https://rmiiiaz.com/learning-center/ac-freezing-up-in-summer An AC freezes up when something drops the coil below freezing — almost always restricted airflow (dirty filter, blocked vents, weak blower) or low refrigerant from a leak. Turn the system to FAN to thaw it, fix the airflow basics, and call a tech if it ices again. Covers: Why does an AC freeze when it's 110° outside? | How do I safely thaw it and check the basics? | What are the root causes a tech must fix? | Why is freezing a problem worth fixing fast? #### Is It Bad That My AC Runs All Day in a Heat Wave? (Learn) — https://rmiiiaz.com/learning-center/ac-running-all-day-heat-wave During an extreme Phoenix heat wave, a healthy AC running almost continuously is often normal — it's matching a huge cooling load. It becomes a concern when the house still can't hit your setpoint, bills jump sharply, or the system short-cycles instead of running steadily. Covers: When is running all day actually normal? | When does it signal a problem? | What makes the AC work harder than it should? | How can I lower the load and the bill? ### Cluster: Heat Pumps & Mini-Splits Heat pumps, ductless mini-splits, and sizing — whether one system can cool and heat your desert home, and what fits a casita or addition. #### What Size AC Do You Need for a 2,000 Sq Ft Phoenix Home? (Learn) — https://rmiiiaz.com/learning-center/what-size-ac-for-2000-sq-ft-home A 2,000 sq ft Phoenix home commonly needs roughly a 3.5–5 ton AC, but that's only a starting frame. Correct sizing comes from a Manual J load calculation that accounts for your insulation, windows, sun exposure, and the desert design temperature — not square footage alone. Covers: What's the quick rule of thumb — and why is it risky? | How is an AC actually sized? | What goes wrong with the wrong size? | How do you get your home sized right? #### Heat Pump vs. Traditional AC for a Phoenix Home (Compare) — https://rmiiiaz.com/learning-center/heat-pump-vs-ac-phoenix A heat pump cools exactly like a traditional AC but also heats efficiently, so it replaces both your AC and furnace with one system. In Phoenix's mild winters and with up to $8,000 in federal heat-pump incentives, it's often the smarter long-term choice — but the right answer depends on your home and existing heat. Covers: What's the actual difference? | Why do Phoenix winters favor a heat pump? | How do incentives change the math? | When does a traditional AC + furnace still win? #### Heat Pump Cost in Phoenix (2026) (Compare) — https://rmiiiaz.com/learning-center/heat-pump-cost-phoenix A quality heat pump installed in Phoenix usually runs close to a comparable high-efficiency AC — sometimes a bit more. But federal incentives (up to $2,000, plus up to $8,000 if income-qualified) often make it cheaper long-term. Your real number comes from a load calc. Covers: So what does a heat pump install actually cost in Phoenix? | Why is a heat pump priced so close to a high-efficiency AC? | How much do 2026 incentives knock off a heat pump? | What pushes your heat pump price up or down? | Why is a load calc the only price that's real? #### Furnace vs. Heat Pump in Phoenix (Compare) — https://rmiiiaz.com/learning-center/furnace-vs-heat-pump-phoenix In Phoenix, the heating season is short and mild, so a heat pump easily covers it while replacing both your AC and furnace with one system — and incentives favor it. A healthy gas furnace paired with a new AC can still make sense. Covers: What's the real difference between a furnace and a heat pump? | Why does Phoenix's mild winter favor a heat pump? | How do incentives change the decision? | When does keeping a gas furnace still make sense? | How do you decide for your home? #### Mini-Splits for Casitas, Additions & Garages (Learn) — https://rmiiiaz.com/learning-center/mini-splits-for-casitas-additions Ductless mini-splits cool and heat spaces your central system can't reach — casitas, additions, converted garages, sunrooms, and stubborn hot rooms — with no new ductwork. A small outdoor unit feeds indoor heads, each on its own thermostat, so you condition only the space you're using. Covers: What is a ductless mini-split? | Which Phoenix spaces are mini-splits perfect for? | Single-zone or multi-zone — what's the difference? | What should you watch out for with a mini-split? | How do you size and quote a mini-split right? #### Mini-Split vs. Central AC for a Phoenix Home (Compare) — https://rmiiiaz.com/learning-center/mini-split-vs-central-ac For a typical Phoenix home with decent ductwork, central AC is usually the simpler, more cost-effective way to cool the whole house. Ductless mini-splits win when ducts are bad or missing, when you want room-by-room zoning, or when conditioning spaces the central system can't reach. Covers: How do central AC and mini-splits actually differ? | Why does the condition of your ducts decide so much? | Which is more efficient, and how do they compare on cost? | When does each system win in the desert? | How do you choose the right one for your home? ### Cluster: Air Quality & Dust Controlling monsoon dust, choosing the right filter, UV germicidal lights, dehumidification, and genuinely cleaner desert air. #### UV Light vs. Air Purifier: What Does Your Phoenix Home Need? (Compare) — https://rmiiiaz.com/learning-center/uv-light-vs-air-purifier A UV germicidal light and a whole-home air purifier aren't competitors — they solve different problems. UV light kills mold and biofilm on your cool, damp evaporator coil; an air purifier captures dust and particles in the air you breathe. Many Phoenix homes need both. Covers: What's the difference between a UV light and an air purifier? | What does a UV germicidal light do in the Phoenix heat? | What does a whole-home air purifier do? | Which one does your Phoenix home need? | Where do homeowners go wrong — and how should you choose? #### Do You Need a Whole-House Dehumidifier in Phoenix? (Learn) — https://rmiiiaz.com/learning-center/whole-house-dehumidifier-phoenix Honestly, most Phoenix homes don't need a whole-house dehumidifier — our air is dry most of the year and your AC removes humidity while it cools. It earns its keep mainly in swamp-cooler homes and during the monsoon, when indoor humidity actually spikes. Covers: Why is Phoenix usually too dry to need a dehumidifier? | When does humidity actually become a problem here? | How do you know if your home has a humidity problem? | What goes wrong if you add one you don't need? | How should you decide? #### How to Improve Indoor Air Quality in the Desert (Learn) — https://rmiiiaz.com/learning-center/improve-indoor-air-quality-desert There's no single gadget that fixes desert air. The reliable approach is layered: put in the right MERV filter, seal duct leaks that pull in attic dust, add UV at the coil, control humidity, ventilate with fresh air, and reduce dust at the source. Covers: Why is desert air so hard on indoor air quality? | What's the right filter — and why isn't 'highest MERV' the answer? | Why does sealing your ducts matter so much in Arizona? | What other layers actually help? | How do you put it together without overspending? #### How to Reduce Dust in Your Home During Monsoon Season (Learn) — https://rmiiiaz.com/learning-center/reduce-dust-monsoon-season To cut monsoon dust indoors, start with the right air filter (often MERV 8–13), keep it fresh, seal duct leaks that pull attic dust into your air, and consider an upgraded filtration or air-purification system. Your HVAC system is your home's primary dust defense. Covers: Why does monsoon season make your home so dusty? | What's the most effective first step? | How does sealing your system help? | When should you consider an air-quality upgrade? #### The Best Air Filter for Arizona Dust (Compare) — https://rmiiiaz.com/learning-center/best-air-filter-for-arizona-dust For most Phoenix homes, a MERV 8–13 filter is the sweet spot — high enough to capture fine Arizona dust, low enough to protect airflow. Higher MERV isn't automatically better: too-restrictive a filter starves your system, hurts cooling, and can freeze the coil. Covers: What does the MERV rating mean? | Why is MERV 8–13 usually right for Phoenix? | Why isn't the highest MERV always best? | How often should you change it in Arizona? ### Cluster: Equipment & Efficiency What SEER2 you actually need in Phoenix, how long systems last in the heat, and how to weigh brands when the installer matters most. #### Best AC Brand for Phoenix Heat? (The Honest Answer) (Compare) — https://rmiiiaz.com/learning-center/best-ac-brand-for-phoenix-heat The honest answer: in Phoenix, the installer matters more than the brand. Every major brand makes a system that survives our heat when it's correctly sized, AHRI-matched, and well installed. RM III installs and services them all and helps you pick the right fit. Covers: Does the AC brand really matter in Phoenix? | What actually makes an AC survive the Phoenix heat? | How do the AC brand tiers compare? | Where do brand-shopping homeowners go wrong? | So how should you actually choose? #### How Long Do AC Units Last in Arizona? (Learn) — https://rmiiiaz.com/learning-center/how-long-do-ac-units-last-in-arizona Nationally, central AC units last 15–20 years — but Phoenix's relentless run-hours and extreme heat commonly shorten that to 10–15. Good maintenance, correct sizing, and protected airflow extend it; neglect and oversizing cut it short. Covers: How long does an AC really last in Arizona? | Why does the Phoenix heat shorten an AC's life? | What extends the life of an AC in the desert? | What are the signs your AC is near the end? | Should you repair or replace as your AC ages? #### What SEER2 Rating Do You Need in Phoenix? (Learn) — https://rmiiiaz.com/learning-center/what-seer2-rating-for-phoenix In Phoenix, the federal minimum for a new split-system AC is 14.3 SEER2, but 15.2 SEER2 or higher is the practical target — it's the threshold for the SRP Cool Cash rebate and meaningfully lower summer bills. Because of our extreme heat, the EER2 rating matters just as much as SEER2. Covers: What do SEER2 and EER2 actually mean? | What's the minimum SEER2 allowed in Arizona? | What SEER2 should you actually buy? | Does higher SEER2 pay off in the desert? #### Is a Higher SEER2 Worth It in Phoenix? (Compare) — https://rmiiiaz.com/learning-center/is-higher-seer2-worth-it-phoenix In Phoenix, stepping up to 15.2 SEER2 is almost always worth it — it unlocks the SRP Cool Cash rebate and cuts bills. Going beyond that to 16–18+ SEER2 pays off mainly if you'll stay in the home several years, run heavy cooling, and value comfort features. Run-hours decide the math. Covers: Why does efficiency pay back faster in Phoenix? | Where's the value sweet spot? | When is higher SEER2 NOT worth it? | What matters more than the SEER2 number? ### Cluster: Maintenance & Seasonal What a real tune-up includes, how often to service in the desert, how to prep before summer, and verifying a licensed AZ contractor. #### What's Actually in a Real AC Tune-Up? (Learn) — https://rmiiiaz.com/learning-center/whats-in-an-ac-tune-up A real AC tune-up is hands-on service, not a quick look: the technician cleans both coils, verifies the refrigerant charge, tests the electrical components, clears the condensate drain, and measures airflow. In the Phoenix heat, skipping those steps is what kills systems early. Covers: What does a thorough AC tune-up actually include? | When should you schedule a tune-up? | What does a cheap 'gimmick' inspection skip? | Why does this matter so much in Phoenix? | How do you make sure your tune-up is the real thing? #### The Phoenix Homeowner AC Maintenance Checklist (Learn) — https://rmiiiaz.com/learning-center/ac-maintenance-checklist Most Phoenix homeowners can safely handle the basics: change the filter, hose off the outdoor condenser, keep two feet of clearance, check the condensate drain, and test cooling early. Leave refrigerant, electrical, and deep coil cleaning to a licensed technician. Covers: What AC upkeep can a homeowner safely handle? | What should you do every month? | What should you do each season? | What should you leave to a licensed pro? | Where does DIY stop and a tune-up begin? #### How to Get Your AC Ready Before Phoenix Summer (Learn) — https://rmiiiaz.com/learning-center/pre-summer-ac-prep Get ahead of Phoenix summer in February through April: test your cooling on a mild day, replace the filter, clear debris off the condenser, check the drain line, and book a professional tune-up before the spring rush books up every reputable company. Covers: Why prep your AC before Phoenix summer hits? | When is the prep window? | What's on the pre-summer prep list? | What warning signs mean you should call now? | Why does booking early beat waiting? #### Permits & AZ ROC Licensing for HVAC Work (Act) — https://rmiiiaz.com/learning-center/permits-and-az-roc-licensing An AC or heat-pump changeout in the Phoenix area needs a city permit and a licensed contractor. Verify any company's Arizona ROC license is active before you hire — RM III holds AZ ROC #332513 and pulls every permit, by the book. Covers: Why does an AC or heat-pump changeout need a permit? | How do you verify an AZ ROC license? | What are the real risks of unpermitted, unlicensed work? | How does RM III do permits by the book? | What should you confirm before you sign for a changeout? #### How Often Should You Service Your AC in Phoenix? (Blog) — https://rmiiiaz.com/blog/how-often-schedule-maintenance Service your AC at least once a year, in spring before cooling season. Many Phoenix homeowners do twice-yearly visits — cooling in spring, heating in fall — because desert run-hours are so high. Regular maintenance is the single biggest factor in reaching the top of your system's lifespan. Covers: How often does a Phoenix AC need service? | Why does the desert demand more maintenance? | What should each visit include? | What does skipping it cost you? | Can I handle any of it myself? #### When Is the Best Time for AC Maintenance in Phoenix? (Learn) — https://rmiiiaz.com/learning-center/best-time-of-year-for-ac-maintenance Schedule your cooling tune-up in spring — March or April — before the first 100°F stretch puts the system under full load. Add a fall heating check in October or November. Booking off-peak means shorter waits, calmer scheduling, and problems caught before a heat wave, not during one. Covers: Why is spring the ideal time? | What about the fall heating check? | Why avoid scheduling in peak summer? | How do you stay on schedule? #### How to Find a Licensed, Trustworthy AC Company in Arizona (Act) — https://rmiiiaz.com/learning-center/how-to-find-a-licensed-hvac-contractor-arizona To find a trustworthy AC company in Arizona, verify the contractor's AZ ROC license is active, confirm they're insured, read recent reviews for patterns, and watch for high-pressure red flags. RM III is licensed (AZ ROC #332513), insured, BBB A+ accredited (since 2021), and rated 5.0 on HomeAdvisor. Covers: Why does licensing matter so much in Arizona? | How do you verify a contractor's license? | How do you read reviews critically? | What are the red flags to walk away from? #### Questions to Ask Before Hiring an HVAC Contractor in AZ (Act) — https://rmiiiaz.com/learning-center/questions-to-ask-before-hiring-hvac-contractor Before you sign, ask: Are you AZ ROC licensed and insured? Did you do a Manual J load calculation? What's the exact equipment, SEER2, and warranty? Are the rebates you mention real? A trustworthy contractor answers all of these without hesitation or pressure. Covers: Questions about licensing and trust | Questions about sizing and the system | Questions about the quote and price | Questions about warranties and rebates ### Cluster: Evaluate & Compare Repair vs. replace, system-type comparisons, and free second opinions to help you choose the right path with confidence. #### Repair or Replace a 15-Year-Old AC in the Phoenix Heat? (Compare) — https://rmiiiaz.com/learning-center/repair-or-replace-15-year-old-ac If your AC is 15 years old and the repair is major (compressor, coil, or a big refrigerant leak), replacement usually wins — desert run-hours have already used up most of its life. A simple rule: if the repair cost times the unit's age tops about $5,000, lean toward replacing. Covers: Why does a 15-year-old AC fail faster in Phoenix? | When is repairing the smart move? | When does replacement save money? | What's the failure mode to avoid? | How do you decide without being upsold? #### Repair or Replace Your Furnace in Phoenix? (Compare) — https://rmiiiaz.com/learning-center/repair-or-replace-furnace Because Phoenix runs its furnace so few hours a year, the repair-or-replace math differs from an AC. Repair a newer furnace with an affordable fix; replace one that's old with a costly repair — and replace immediately if the heat exchanger is cracked. Covers: Does the repair-or-replace math differ for a furnace in Phoenix? | When is repairing your furnace the right call? | When does replacement start to make more sense? | When is replacing the furnace non-negotiable? | Should you replace the furnace or switch to a heat pump? #### Window AC vs. Mini-Split vs. Central AC (Compare) — https://rmiiiaz.com/learning-center/window-ac-vs-mini-split-vs-central For a Phoenix home, a window AC is cheap spot cooling, a ductless mini-split delivers efficient zoned comfort with no ductwork, and central AC cools the whole house evenly. The best choice depends on the space, your budget, and whether ducts already exist. Covers: What are the three ways to cool a Phoenix space? | How do they compare on cost, efficiency, and coverage? | When does each option win? | What are the trade-offs and common mistakes? | How do you choose the right one for your Phoenix home? #### Should I Get a Second Opinion on My AC Replacement Quote? (Act) — https://rmiiiaz.com/learning-center/should-i-get-a-second-opinion-on-ac-quote Yes — get a second opinion any time a quote feels rushed, seems high, recommends replacing a system you think is repairable, or relies on rebates you can't verify. RM III reviews any AC, heating, or air-quality quote for free, with no obligation — we'll confirm a fair deal or flag the problems. Covers: When is a second opinion worth getting? | What does a real second opinion review? | How does RM III's free second opinion work? | Why trust RM III for the review? ### Cluster: Cost Guides What HVAC repair, replacement, mini-splits, IAQ, and tune-ups really cost in Metro Phoenix in 2026 — plus the rebates that lower the bill. #### Mini-Split Installation Cost in Phoenix (2026) (Compare) — https://rmiiiaz.com/learning-center/mini-split-installation-cost-phoenix A single-zone ductless mini-split in Phoenix typically ranges from roughly $4,000 to $8,000 installed; multi-zone systems often run $8,000 to $20,000 or more. Zones, line-set length, and electrical work drive the spread — only a free in-home estimate is a real number. Covers: What does a ductless mini-split cost to install in Phoenix? | What drives the price of a mini-split install up or down? | When does a mini-split make sense — and when does it cost more than it should? | Can a mini-split qualify for rebates or tax credits? | How do you get a real mini-split price for your home? #### What Does an Indoor Air Quality System Cost in Phoenix? (Compare) — https://rmiiiaz.com/learning-center/indoor-air-quality-system-cost Indoor air quality upgrades in Phoenix are priced by component. A high-MERV media filter cabinet is the most affordable; a UV germicidal light, a whole-home air purifier, and a whole-house dehumidifier each step up in price. Only an in-home assessment gives your real number. Covers: What does an indoor air quality system cost in Phoenix? | What does each component actually do? | Which air quality upgrade is right for your Phoenix home? | What should you avoid when buying air quality equipment? | How do you get a real price for air quality work? #### Why AI (and Online Calculators) Can't Give You a Real HVAC Price (Learn) — https://rmiiiaz.com/learning-center/why-ai-doesnt-know-your-price AI and online calculators can show ballpark HVAC ranges, but they can't quote your job. A real price needs a Manual J load calculation, your home's ducts and electrical, the equipment tier you pick, and your rebate eligibility — which only a free in-home estimate captures. Covers: Why can't AI or an online calculator quote my HVAC job? | What does a real HVAC price actually depend on? | So what are online price ranges good for? | What's the failure mode of trusting an AI number? | How do you get the only honest number? #### How Much Does a New AC Cost in Phoenix in 2026? (Compare) — https://rmiiiaz.com/learning-center/how-much-does-a-new-ac-cost-in-phoenix Most Phoenix-area homeowners pay roughly $7,000–$14,000 for a professionally installed new central AC in 2026, with full system-and-air-handler replacements often landing between $9,000 and $16,000. Size, efficiency, and your existing ductwork drive the spread — the only accurate number comes from a load calculation and an in-home estimate. Covers: What does a new AC actually cost in Phoenix in 2026? | What drives the price up or down? | Why do two quotes for the same house look so different? | How do rebates and financing change the real number? | How do you get an accurate price for your home? #### Whole-HVAC Replacement Cost in Arizona: A 2026 Guide (Compare) — https://rmiiiaz.com/learning-center/hvac-replacement-cost-arizona A complete HVAC replacement in Arizona — both the cooling and the indoor heating/air-handling equipment — typically runs about $9,000 to $18,000 installed in 2026. A single-system heat pump that does both jobs often falls within that same band. The spread comes from size, efficiency, ductwork, and equipment tier. Covers: What's included in a 'whole-HVAC' replacement? | What does a full HVAC system cost in Arizona in 2026? | When is whole-system replacement the right call? | How do you compare HVAC bids fairly? | How do rebates and tax credits lower the cost? #### How Much Does an AC Tune-Up Cost in Phoenix? (Compare) — https://rmiiiaz.com/learning-center/ac-tune-up-cost-phoenix A single-system AC tune-up in the Phoenix area typically costs about $89–$199 in 2026. The price varies with how thorough the visit is — a real tune-up is a multi-point inspection and cleaning, not a five-minute filter swap — and a maintenance plan usually lowers the per-visit cost. Covers: What does an AC tune-up cost in Phoenix? | What does a real tune-up include? | Why does desert AC need a tune-up more than most? | Is a maintenance plan worth it instead? #### SRP Cool Cash: The 2026 AC Rebate Explained (Learn) — https://rmiiiaz.com/learning-center/srp-cool-cash-rebate SRP Cool Cash pays SRP electric customers up to $1,125 — plus a variable amount of up to $225 per ton of cooling — toward a qualifying high-efficiency system (15.2 SEER2 or higher) installed by April 30, 2027. RM III handles the paperwork for you. Covers: What is SRP Cool Cash? | How much is the rebate, and who qualifies? | Why does the 15.2 SEER2 threshold matter? | How do you actually claim it? #### Did APS End Its AC Rebate? Yes — Here's What's Left (Learn) — https://rmiiiaz.com/learning-center/aps-hvac-rebate-ended Yes — Arizona Public Service (APS) ended its residential HVAC rebate program effective January 1, 2026. If you're an APS customer, there's no APS AC rebate to claim in 2026. Be wary of any company that promises one. Federal incentives still apply. Covers: What changed with the APS rebate? | Am I an APS customer or an SRP customer? | What incentives can APS customers still use? | How do you make the most of what's left? #### Federal HVAC Rebates & Tax Credits in Arizona (2026) (Learn) — https://rmiiiaz.com/learning-center/federal-hvac-rebates-tax-credits-arizona Two federal incentives apply to Arizona homeowners in 2026: the HEAR / 'Efficiency Arizona' program, offering up to $8,000 toward a qualifying heat pump for income-qualified households (funded through September 30, 2031), and the 25C tax credit — up to $600 for a qualifying AC or up to $2,000 for a heat pump. Covers: What is the HEAR / Efficiency Arizona program? | How does the 25C tax credit work? | Can I combine federal incentives with SRP Cool Cash? | How do you find out what you qualify for? ### Cluster: Brands We Install & Service The major residential HVAC brands RM III installs and services in Phoenix — and why, in our heat, the installer matters more than the badge. RM III is an independent, licensed Arizona contractor (AZ ROC #332513), not a manufacturer's authorized dealer; these pages use "install & service" framing only. #### The HVAC Brands RM III Installs & Services (Learn) — https://rmiiiaz.com/learning-center/hvac-brands-we-install-and-service RM III installs and services every major residential HVAC brand — Carrier, Trane, Lennox, Goodman, Mitsubishi Electric, Rheem, and their sister brands — plus many older units. As an independent licensed contractor (not an authorized dealer for any manufacturer), it recommends what genuinely fits the home and budget. In the Phoenix heat, correct sizing (Manual J), an AHRI-matched system, and a clean install decide longevity far more than the brand name. Covers: Does the HVAC brand really matter in the Phoenix heat? | Which HVAC brands does RM III install and service? | What actually makes a system survive a Phoenix summer? | How do the brand tiers compare — premium vs. value? | So how should you actually choose a brand for your home? #### Carrier AC Systems in Phoenix (Learn) — https://rmiiiaz.com/learning-center/carrier-ac-systems-phoenix Carrier is a premium, widely available brand (sister brands Bryant, Payne, Day & Night) whose variable-speed, inverter-driven Infinity systems suit Phoenix's long run-hours, with easy parts availability. RM III installs and services Carrier with no dealer or factory-certification claims — correct sizing and a clean install decide comfort more than the badge. Covers: What is Carrier known for? | What does the Carrier lineup look like? | How does Carrier hold up in Phoenix desert heat? | How serviceable is Carrier — parts and repairs? | Should you choose Carrier for your Phoenix home? #### Trane AC Systems in Phoenix (Learn) — https://rmiiiaz.com/learning-center/trane-ac-systems-phoenix Trane is known for rugged, durable equipment — Spine Fin coils and heavy-duty compressors — and shares engineering with its sister brand American Standard. RM III installs and services Trane, but its durability only pays off when the system is right-sized and installed well. Covers: What is Trane known for? | What does the Trane lineup look like? | How does Trane hold up in Phoenix desert heat? | How serviceable is Trane — parts and repairs? | Should you choose Trane for your Phoenix home? #### Lennox AC Systems in Phoenix (Learn) — https://rmiiiaz.com/learning-center/lennox-ac-systems-phoenix Lennox makes some of the highest-efficiency air conditioners on the market — a real advantage in Phoenix's long cooling season — but uses more proprietary parts routed through Lennox channels. RM III installs and services Lennox and is upfront when a repair may take longer due to parts availability. Covers: What is Lennox known for? | What does the Lennox lineup look like? | How does Lennox hold up in Phoenix desert heat? | How serviceable is Lennox — parts and repairs? | Should you choose Lennox for your Phoenix home? #### Goodman AC Systems in Phoenix (Learn) — https://rmiiiaz.com/learning-center/goodman-ac-systems-phoenix Goodman is the value leader — affordable equipment with widely stocked, low-cost parts and a strong warranty, owned by Daikin (sister brand Amana). In Phoenix that value is real, but because it's budget equipment, the quality of the install decides how long it lasts. Covers: What is Goodman known for? | What does the Goodman lineup look like? | How does Goodman hold up in Phoenix desert heat? | How serviceable is Goodman — parts and repairs? | Should you choose Goodman for your Phoenix home? #### Mitsubishi Electric Ductless Systems in Phoenix (Learn) — https://rmiiiaz.com/learning-center/mitsubishi-electric-ductless-phoenix Mitsubishi Electric is a leader in ductless mini-splits and inverter heat-pump technology — the go-to for cooling Phoenix casitas, additions, garages, sunrooms, and zoning a single hot room without new ductwork. RM III installs and services Mitsubishi where it fits best, and says so when fixing the central system makes more sense. Covers: What is Mitsubishi Electric known for? | What does the Mitsubishi lineup look like? | How does Mitsubishi hold up in Phoenix desert heat? | How serviceable is Mitsubishi — parts and repairs? | Should you choose Mitsubishi for your Phoenix project? #### Rheem AC Systems in Phoenix (Learn) — https://rmiiiaz.com/learning-center/rheem-ac-systems-phoenix Rheem offers dependable mid-market value with EcoNet smart controls and widely available parts, and shares equipment with its sister brand Ruud. RM III installs and services Rheem — a balanced choice between budget and premium when it's correctly sized and well installed. Covers: What is Rheem known for? | What does the Rheem lineup look like? | How does Rheem hold up in Phoenix desert heat? | How serviceable is Rheem — parts and repairs? | Should you choose Rheem for your Phoenix home? ### Cluster: Comfort by Space AC for every space in a Phoenix home — and why the honest fix for a hot room is rarely a bigger AC. Most spaces are solved with airflow, ductwork, zoning, or a targeted ductless mini-split. #### AC for Every Space in Your Phoenix Home (Learn) — https://rmiiiaz.com/learning-center/ac-for-every-space-in-your-phoenix-home Different spaces fail to cool for different reasons — a hot upstairs, a room over the garage, a glass sunroom — because the central system and ducts were designed for the house as a whole. The fix is rarely a bigger AC; it's usually airflow, ductwork, zoning, or a targeted ductless mini-split, chosen after an honest diagnosis. Covers: Why does one room cool fine while another bakes? | What are the real causes behind a hot space? | Which fix fits which space? | When is a ductless mini-split the answer? | How do you get the right fix for your home? #### Why Your Upstairs Bedroom Is Hot in Phoenix (Learn) — https://rmiiiaz.com/learning-center/hot-upstairs-bedroom-phoenix A hot upstairs in a two-story Phoenix home is usually heat rising, an attic baking the ceiling, and the longest duct runs arriving starved — not a weak AC. The lasting fixes are zoning, duct correction, added returns, insulation, or a mini-split for the worst room; a bigger AC makes the two-story gap worse. Covers: Why is my upstairs so much hotter than downstairs? | Is it my AC, or something else? | What are the real, lasting fixes? | How do you pick the right fix for a two-story home? #### Cooling a Bonus Room Over the Garage (Learn) — https://rmiiiaz.com/learning-center/bonus-room-over-garage-ac A bonus room over the garage is one of the hardest spaces to cool in Phoenix: an uninsulated garage heats it from below, extra roof and wall exposure add load, and long duct runs arrive starved. A ductless mini-split plus garage-ceiling insulation usually solves it far better than upsizing the central system. Covers: Why is the room over my garage always hot? | Why won't a bigger central AC fix it? | What actually cools a bonus room over the garage? | How do you get a bonus room sized and quoted right? #### Cooling a Garage or Workshop in Phoenix (Learn) — https://rmiiiaz.com/learning-center/garage-workshop-cooling-phoenix A Phoenix garage is built unconditioned and can top 110°F, so it carries an enormous cooling load; extending the home's ducts into it is usually ineffective and often against code. A right-sized ductless mini-split paired with insulation and a sealed garage door is the durable answer. Covers: Why is a garage so hard to cool in Phoenix? | Why shouldn't I just extend my home's AC into the garage? | What's the best way to cool a garage or workshop? | How do you size cooling for a garage? #### Cooling a Sunroom or Arizona Room in Phoenix (Learn) — https://rmiiiaz.com/learning-center/sunroom-cooling-phoenix A sunroom or Arizona room is mostly glass, so it traps huge solar heat the central AC was never sized to handle, and long duct runs to it underperform. The honest fix is a ductless mini-split sized for the solar load plus shading (Low-E glass or shades) — not stretching a duct into a greenhouse. Covers: Why does my sunroom get so hot in Phoenix? | Why can't my central AC keep the sunroom comfortable? | What's the right way to cool a sunroom? | How do you size a sunroom system correctly? #### Whole-Home Zoning for a Phoenix House (Compare) — https://rmiiiaz.com/learning-center/whole-home-zoning-phoenix Zoning divides one ducted system into independently controlled areas with dampers and multiple thermostats — the ducted answer to a multi-story home one thermostat can't keep even. It's compared here against a multi-zone mini-split and a duct correction, and must be engineered to protect airflow when dampers close. Covers: What is HVAC zoning, exactly? | When does zoning make sense in a Phoenix home? | Zoning vs. a mini-split vs. a duct fix — which wins? | Is zoning worth it, or is a second system better? | How do you design zoning correctly? #### New-Construction vs. Retrofit HVAC in Phoenix (Compare) — https://rmiiiaz.com/learning-center/new-construction-vs-retrofit-hvac New construction lets you design HVAC on a blank slate — Manual J load calc, Manual D duct design, equipment match, and zoning built in — while a retrofit works within an existing home's ducts and layout, often using mini-splits and targeted duct fixes. Either way, the load calculation and duct assessment separate a comfortable result from an expensive guess. Covers: What's the real difference between new-build and retrofit HVAC? | How do you design HVAC for a new Phoenix build? | What does a retrofit look like in an existing home? | Which path costs more — and which is better? | How do you get either one done right? --- ## Frequently Asked Questions **Should I get a second opinion on my HVAC quote?** Yes — especially on a system replacement or a big repair. A second set of eyes from a licensed contractor (RM III holds AZ ROC #332513) confirms the diagnosis, the sizing, and the price before you spend thousands of dollars. RM III reviews any written quote at no cost and with no obligation. **Does a second opinion cost anything?** No. Free second opinions are part of how RM III does business, alongside free estimates and indoor-air-quality assessments. **How do I know if an AC replacement quote is fair in Phoenix?** Compare it apples-to-apples: the same equipment tier, SEER2 efficiency rating, warranty terms, and scope of work — including the ductwork, not just the unit on the roof. Owner Raul Mori checks whether the system is right-sized for your home. **Are RM III's technicians licensed and insured?** Yes. RM III A/C & Heating is licensed under Arizona ROC #332513 and is bonded and insured. **What areas does RM III serve?** Laveen Village (home base) and 30 metro-Phoenix cities across the West, Central, North, East, and Southeast Valleys — including Phoenix, Scottsdale, Tempe, Mesa, Chandler, Gilbert, Glendale, Peoria, Surprise, Goodyear, Buckeye, and more. Not sure if you're covered? Use the ZIP checker on the Service Areas page, or just call (602) 290-7911. **Do you offer same-day service?** Same-day service is available in many cases. Contact RM III at (602) 290-7911 to check current availability.