Southern Utah · Family-owned since 1992
Heating & Air Conditioning Specialists
Commercial, residential, and industrial HVAC across Washington, St. George, Hurricane, and the surrounding St. George metro area. We service all makes and models.
Talk to a tech today
Same-day service available across the St. George metro area. Free estimates on installs.
Call (435) 674-1275 Request a Quote Online- › Priority emergency response
- › 30+ years of local experience
- › Honest diagnostics
30+
Years in Southern Utah
1,000s
Systems installed
Priority
Emergency response
All
Makes & models
What we do
Full-service HVAC since 1992.
From a quick, same-day part replacement to a high-efficiency furnace installation, a 20-ton commercial rooftop swap on a restaurant, or a custom geothermal loop designed from scratch—our shop handles it all. No subcontractors. No middlemen.
Air Conditioning
Fast, honest air conditioning service across Southern Utah. Same-day repair on most systems, free estimates on replacements, and tune-ups that pay for themselves in a single summer.
Learn moreHeating
Gas furnace repair, replacement, and maintenance. We service every major brand and install 95%+ AFUE high-efficiency furnaces sized for your home.
Learn moreHeat Pumps
Heat pumps are the most efficient way to heat and cool a Southern Utah home. We install, service, and repair air-source and ductless mini-split heat pumps from every major manufacturer.
Learn moreGeothermal
Geothermal is the most efficient HVAC technology on the market, and one of the few investments that genuinely pays for itself. We design, install, and service ground-source heat pump systems across Southern Utah.
Learn moreIndoor Air Quality
Southern Utah air is dry, dusty, and full of fine particulates. We install whole-home air cleaners, humidifiers, ERV ventilators, and zoning systems that make a measurable difference.
Learn moreCommercial HVAC
Rooftop units, T.I. spaces, sheet metal fabrication, gas lines, grease ducts, and preventive maintenance contracts for businesses across Southern Utah.
Learn moreNew Construction
Builders, GCs, and homeowners trust M&M for full-design HVAC on new homes, additions, and major remodels. Manual J load calcs, Manual D duct design, and clean rough-ins on schedule.
Learn moreAbout M&M
Family-owned. Locally rooted. Quietly excellent.
Alan and the M&M crew opened the doors in 1992. By 1996, the business had grown enough that the family put up our current shop on Rio Virgin Drive, and we've been operating out of it ever since. Same family. Same address. Same phone number that's been answered for over three decades.
Between my father, who started in the trade back in 1973 at the age of 20, and myself, starting at 18, we have well over half a century of combined hands-on experience right here in Southern Utah. We've worked on essentially every era of HVAC equipment in the valley, from older R-22 split systems to the ultra-efficient, variable-speed inverter units going in this week. That deep well of experience is our actual product. When a technician walks into your mechanical room, they've likely seen your exact configuration before.
We don't run salespeople on commission. We don't push memberships you don't need. When a simple, inexpensive part will fix your system, that's exactly what we install, and we tell you so. Plenty of HVAC companies have made a different choice. We'll keep making this one.
Why M&M
Four things that set us apart.
You can probably find an HVAC contractor on every block in St. George. Here's why thousands of Southern Utah homeowners and businesses keep dialing the same number they did a decade ago.
30+ Years of Local Experience
Same family, same shop, same phone number since 1992. We've installed and serviced equipment in every Washington County zip code.
Honest Diagnostics
If a simple, inexpensive part fixes it, we install the simple, inexpensive part. No commission salespeople, no upsell pressure, no manufactured emergencies.
All Makes & Models
Amana, American Standard, Bosch, Bryant, Carrier, Coleman, Comfortmaker, Daikin, Day & Night, Fujitsu, Goodman, Gree, Heil, Lennox, Luxaire, Mitsubishi, Oxbox, Payne, Rheem, RunTru, Ruud, Tempstar, Trane, York. We work on every brand and every era of HVAC.
Priority Response
AC failures don't stick to standard business hours, and neither do we. We track urgent calls 24/7/365 to make sure critical system breakdowns get the fast attention they need.
Where we work
Eight cities. One shop. Same-day reach.
We dispatch from our Washington shop and cover the entire St. George metro area. Most homes see a truck within 30 minutes during business hours.
Washington
From our Washington shop: Under 15 minutes
View Washington page
St. George
From our Washington shop: 8–15 minutes
View St. George page
Hurricane
From our Washington shop: 20–25 minutes
View Hurricane page
Ivins
From our Washington shop: 20 minutes
View Ivins page
Santa Clara
From our Washington shop: 15 minutes
View Santa Clara page
La Verkin
From our Washington shop: 25 minutes
View La Verkin page
Toquerville
From our Washington shop: 25 minutes
View Toquerville page
Springdale
From our Washington shop: 45 minutes
View Springdale page
Don't see your area? Give us a call at (435) 674-1275. In Cedar City and Kanab, we cover new system installations and take service calls on a case-by-case basis.
Resources
Helpful HVAC info from our team.
Plain-English answers from technicians who fix this stuff for a living. No SEO fluff, no sales pitches.
AC Repair
7 Signs Your Air Conditioner Needs Repair
Weak airflow, warm air from vents, ice on the lines. Here's how to tell whether you need a tune-up, a part, or a full replacement before the next heat wave.
Read moreHeating
Heat Pump vs. Furnace in Southern Utah
A modern heat pump is the most efficient way to heat a Washington County home, but only if you size it right and account for our handful of cold mornings.
Read moreMaintenance
How to Prevent a Frozen AC Coil This Summer
If your AC is running but barely cooling, the indoor coil may be frozen solid. Most causes are preventable with a clean filter and a little airflow attention.
Read moreCommon questions before the first call
How fast can you get to my home?
The best way to beat the summer rush? Schedule preventive maintenance before the heat hits. Getting your system tuned up in the spring catches worn components early, ensuring your AC runs reliably and helping you avoid a midnight breakdown altogether.
Do you service all brands?
What does an AC repair typically cost?
Minor Electrical Fixes: Routine items like a failed capacitor or contactor are straightforward, inexpensive parts that get your system right back up and running quickly.
Mid-Tier Mechanical Repairs: Replacing a worn-out blower motor or condenser fan motor requires a bit more labor and a higher-tier component, but it's a standard fix.
Major Component Failures: If an older system suffers a major refrigerant leak, or a compressor or coil failure, the cost of the repair can sometimes tip the math toward considering a full equipment replacement.
Our Guarantee: We don't believe in financial surprises or high-pressure sales. Our technician will diagnose the exact issue, explain the breakdown, and give you an honest, upfront price before any work begins.
Are you licensed and insured in Utah?
Do you offer financing on new systems?
What areas of Southern Utah do you serve?
For communities farther out, like Cedar City and Kanab, we fully cover new system installations. However, standard service and repair calls to those extended areas are handled on a case-by-case basis depending on our current schedule. If you're unsure whether we can make it out to your address, just give us a call and we'll let you know what we can do.
Ready to schedule? Talk to a tech today.
Call (435) 674-1275 for same-day service or send us a message. We respond within one business day.