HVAC Repair in Grand Junction, CO
Homes here need heat from September through May and cooling from July through August. If your system quits, tell us what it's doing and a licensed contractor who covers Mesa County will get in touch.
Tell us about the job
It takes about a minute.
Nine months of heat, two of cooling, and not much break in between
Your furnace is the machine doing most of the work in Grand Junction. Heat runs September through May, and on winter nights that average 18°F it cycles on and off for hours at a time. Most homes here heat with gas, so that means the igniter and the burner assembly firing again and again through the night. A worn igniter is a common reason a furnace stops lighting on a cold morning.
Summer is short here, just July and August, but afternoons averaging 83°F still put real load on the air conditioner in a compressed stretch of weeks. The system barely settles into a season before it has to switch to the other one. Mesa County has also seen 182 winter storms and 152 damaging wind events over the past ten years, and weather like that can knock out power. When the power comes back, most furnaces and air conditioners start up again on their own, but it is worth checking that yours has.
- 9 months
- September through May, your system heats
- 2 months
- July through August, it cools
- 18°F
- the average winter night it heats against
- 83°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
A new furnace and air conditioner would cut about $110 a year off heating and cooling for a typical Mesa County home.
Estimates for a typical Mesa County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Colorado fuel prices and NOAA climate normals. Your home will differ.
Repair makes sense when one part has failed.
Replacement makes sense when the furnace's heat exchanger is cracked, the air conditioner's compressor has failed, or repairs keep coming.
- Why is my heat not working?
- Start with the thermostat. Check that it's set to heat, not cool, and that the temperature is set above the room temperature. If that's fine, check your breaker panel and any reset switch on the furnace itself, since a tripped breaker or a switch left off will stop it cold. Gas furnaces will also shut down if the pilot or igniter fails to light, so if you smell gas or hear repeated clicking with no flame, turn off the system and call for repair rather than trying to relight it yourself. With winter nights here averaging 18°F, a furnace that won't start isn't something to leave for later.
- Why is my system running but not cooling the house?
- The first thing to check is the air filter. A filter clogged with dust blocks airflow across the coil, and without enough air moving over it the coil can ice up and stop cooling the air at all. Next check outside at the condenser unit and make sure nothing is blocking it, no leaves, no grass clippings, no cover left on from winter. If the filter is clean and the outdoor unit is clear but the air coming from your vents still isn't cold, the system likely needs a contractor to check the refrigerant charge.
- What can I check before calling for HVAC repair?
- Check the thermostat first. Confirm it's set to the mode you want, heat or cool, and that the batteries aren't dead if it has any. Then check your breaker panel for a tripped breaker, since both furnaces and air conditioners run on their own circuit and a power interruption can trip it. If it's a furnace, look for a reset switch nearby that may have been switched off, and check that the filter isn't so dirty it's choking off airflow. If none of that explains it, a contractor will need to look at the system directly.


