Tucson HVAC maintenance runs on three beats: a tune-up before summer, a filter and drain check during the monsoon, and a heating check in the fall. The cooling system carries the load here, so it gets the most attention. Climate Pros Tucson matches you with a licensed pro for the jobs that need one.

Why is the Tucson schedule different?

Cooling does most of the work. The 1991-2020 normals at Tucson International Airport show about 3,424 cooling degree days a year against about 1,333 heating degree days, and about 68 days a year at or above 100F. June has the hottest normal high at 101.2F, and July has the warmest normal nights at 76.3F, so the system gets little overnight rest.

What should happen before summer?

Book an AC tune-up in spring, ahead of the first 100F stretch. A pro checks the refrigerant charge, cleans the coils, tests electrical parts and clears the drain. See the pre-summer AC tune-up checklist and AC tune-up for what belongs on the visit. TEP’s Efficient Home program listed up to $160 total for an AC tune-up in October 2026 ($80 refrigerant charge repair, $40 indoor coil cleaning, $40 outdoor coil cleaning) through participating contractors. Confirm current amounts with TEP.

Your part in spring: replace the filter, clear debris from around the outdoor unit and make sure nothing blocks the vents.

What belongs in the monsoon months?

The monsoon runs June 15 through September 30. Dew points at the airport climb into the high 50s in July and August, so the AC removes more moisture and the drain line works harder. Dust storms are part of the season too.

  • After a dust storm, check the filter and look at the outdoor coil
  • Watch the drain line and the pan for water
  • If you use an evaporative cooler, remember that it loses ground when the air turns humid, and Tucson Water advises regular pad changes and an in-line filter because of hard water

Read monsoon humidity and your AC for more.

What should you do in fall?

Run the heat once before you need it. A heat pump or furnace that sat idle for months may hold dust, and a first test on a cold night is the wrong time to find a fault. Check the filter, test the thermostat in Heat mode and see the fall HVAC checklist. Gas furnaces deserve a pro’s eye before the first cold nights, and a working carbon monoxide detector matters (carbon monoxide in a home).

What about winter and ducts?

Keep filters fresh and watch the thermostat. See the winter HVAC checklist. The EPA doesn’t recommend routine duct cleaning on a fixed schedule. Clean ducts as needed, for example with visible mold, vermin or heavy debris. ENERGY STAR notes that a typical forced-air house can lose about 20% to 30% of the air moving through its ducts to leaks and poor connections, so duct sealing often matters more than cleaning.

Is a maintenance plan worth it?

That depends on the plan’s terms and what the visits include. Read HVAC maintenance plan worth it before you sign.

When to call us

For HVAC maintenance and tune-ups, call (520) 353-2520 and we’ll match you with a licensed local pro. You can also start at the Tucson HVAC hub. Check any contractor’s license at roc.az.gov.