Last updated: October 3, 2026
Call and we match you with a licensed HVAC company that works in Summerhaven and Mount Lemmon. That covers AC repair and installation, heat pumps, furnaces, mini splits, evaporative cooler questions, ductwork and emergency calls. You describe the problem, and the company you're matched with quotes the job before any work starts. Summerhaven and Mount Lemmon is a long drive for most Tucson companies, so ask about timing.
Summerhaven is the mountain village near the top of the Catalina Highway on Mount Lemmon, listed at about 7,764 feet. The 2003 Aspen Fire destroyed 314 of the village's 467 homes, so much of what stands today was built after it. The 2020 Census counted 71 residents, and the ACS estimate shows no year-round occupied homes, consistent with cabins used part of the year.
It's the longest drive in the service area, so ask about timing. Climate Pros Tucson matches you with a licensed company willing to make the trip up the mountain, and that company tells you directly when it can come.
The Catalina Foothills and Tanque Verde sit on higher ground against the mountains, mostly owner-occupied custom and estate homes. Summerhaven, at the top of the Catalina Highway, is a different job entirely: a mountain village where heating, freeze protection and access matter more than cooling, and a long-haul call.
Up here the climate flips. The 1991-2020 normals for the Mount Lemmon Willow Canyon station, at about 7,047 feet, show a January normal high of 49.6F and low of 33.5F, about 53 nights a year at or below freezing, and about 4 days a year that never get above freezing. Annual heating degree days run about three times the airport's. Pima County puts land at 4,000 feet and above in code climate zone 5B with a winter design temperature of 4F.
That makes a standard heat pump a question for the pro, not a default; a cold-climate model or backup heat may be part of the answer. Cabins that sit empty need freeze protection and a fall start-up. If your heat runs on propane, check the tank before winter. Summerhaven is unincorporated Pima County, so the contractor confirms county permit requirements.
Local guides: HVAC on Mount Lemmon and in Summerhaven
At about 7,764 feet, heating is the bigger job. The usual no-heat failures are furnace ignitors and flame sensors, and defrost controls or backup heat on a heat pump, and they tend to show up on the first cold night after months idle. Cooling equipment still sees capacitor, contactor and fan motor failures in summer.
Before you call, check the breaker, replace a dirty filter, make sure the thermostat is set to cool with good batteries, and look for a tripped condensate float switch near the indoor unit. If the refrigerant line or coil is iced over, switch to fan only and let it thaw. Climate Pros Tucson doesn't set prices. The company you're matched with diagnoses first and quotes the repair before work starts, so ask for its diagnostic fee as a dollar figure. On older equipment, ask for a repair price and a replacement price side by side. The $5,000 rule (the unit's age times the repair cost) is a trade rule of thumb, not a verdict.
For a no-cool or no-heat problem in Summerhaven and Mount Lemmon, call with the address, the system type, the symptoms and anyone at risk in the home. Summerhaven and Mount Lemmon is a long drive for most Tucson companies, so ask about timing when you call. We match you with a licensed company that covers it, and that company tells you directly when it can come. Climate Pros Tucson is a referral service: it doesn't dispatch trucks, promise arrival times or set fees. Any after-hours service is the matched company's own policy. On a cold night with no heat, keep people together in one closed-off room with blankets, and never use a gas range, grill or generator indoors for warmth. While you wait in summer heat, move people to the coolest room or an air-conditioned building. The CDC advises older adults not to rely on a fan as the main cooling when it is very hot. Shut the system off if you smell burning or see sparking, if you can do it safely. A gas odor or carbon monoxide alarm means leave the building and call 911 or the gas utility from outside.
Installation and replacement. The company you're matched with sizes a new system from a load calculation on the house, not the tonnage on the old nameplate, and quotes it in writing before anything is ordered. Summerhaven and Mount Lemmon is unincorporated Pima County, so the City of Tucson's permit page doesn't govern it; the contractor confirms the county's requirements and pulls any permit. If TEP is your utility, ask whether the company you're matched with is a participating contractor in TEP's Efficient Home Program, which pays instant rebates as listed by TEP in October 2026.
Heating. Pima County puts land at 4,000 feet and above in code climate zone 5B with a 4F winter design temperature, so at Summerhaven and Mount Lemmon heating is the main job and a standard heat pump is a question for the pro, not a default. At this elevation a standard heat pump is a question for the pro, so ask about cold-climate models and backup heat. If your home heats with propane, check the tank level before calling about a no-heat problem.
Maintenance. A tune-up before the first 100F day covers the coils, refrigerant charge, electrical connections, capacitor and condensate drain, and a second look after the monsoon clears the dust.
Check any contractor's license with the Arizona Registrar of Contractors at roc.az.gov. Residential air conditioning and heating work falls under the R-39 class. The service pages below go straight to the job you need.
We match you with a licensed company that covers Summerhaven. It's a long drive, so ask about timing on the call, and the company tells you directly when it can come. If pipes are at risk, mention it.
It's a question for the pro, not a default. Mount Lemmon sits in code climate zone 5B with a 4F winter design temperature. A cold-climate heat pump or a backup heat source belongs in that conversation.
Have the heating system checked in the fall, set a minimum temperature rather than shutting off, and make sure fuel is topped up if you heat with propane. Ask the company you're matched with about a fall start-up visit.
Much less than in town. Mount Lemmon's July normal high is 80.2F, with about 715 cooling degree days a year against about 3,424 at the airport. Some cabins rely on heat alone; a ductless heat pump can cover both if you want summer cooling.
You hear the price before any work starts.