Colorado HVAC Pros
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Furnace Repair in Grand Junction, CO

Furnaces here run from September through May. If yours 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.

Step 1 of 3: Equipment
A gas furnace with sheet-metal ductwork and PVC pipes installed in an unfinished basement.

Nine months of heat, and cold nights to match

Your furnace runs September through May here, nine months of the year. On winter nights that average 18°F, it cycles on and off many times to hold the house steady, and every cycle puts a little more wear on the igniter and the burner.

Mesa County has seen 182 winter storms and 152 damaging wind events over the past ten years. Wind like that can push cold air back through the vent, and a power outage stops the blower cold. Across Colorado, 13% of households lost power for a full day or more in 2024. When the power comes back, most furnaces restart on their own, but if yours doesn't fire back up, that's a sign something else is wrong.

9 months
September through May, your furnace is on duty
18°F
the average winter night it heats against
74%
of homes here heat with gas, so most furnaces here burn gas
182 winter storms
in ten years, the nights a failure hurts most
Isometric cutaway illustration of a small single-story house showing a furnace with a flue pipe through the roof and ducting running to rooms containing a sofa, chair and bed.
Your furnace works hardest from November through April.

NOAA nClimDiv, 1991–2020 normals

An unfinished basement featuring a forced-air furnace, exposed wooden ceiling joists, bare concrete walls, and miscellaneous items including cardboard boxes and coiled cables on the floor.

A new furnace would cut about $110 a year off heating for a typical Mesa County home.

  • A new high-efficiency furnace$420 a year
  • An older furnace$530 a year

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 and the heat exchanger is sound.

Replacement makes sense when the heat exchanger is cracked or the furnace keeps needing parts.

Why won't my furnace turn on?
Start with the thermostat and the power. Check that it's set to heat and the temperature is above room temperature, then check the furnace switch and the breaker. If those are fine, the igniter may have failed or the flame sensor may be dirty, and either one will stop the furnace from starting. A furnace that won't start at all with power confirmed needs a contractor to check it, especially with winter lows here averaging 18°F.
Why is my furnace blowing cold air?
Most of the time this means the blower is running but the burners haven't lit. A dirty flame sensor or a failed igniter will let the blower run without heat behind it. Check the air filter too, since a clogged one can make the furnace feel weaker than it is. If the air stays cold after a few minutes, the furnace needs a contractor to look at the ignition system.
Why won't my furnace pilot light stay lit?
This usually means the thermocouple isn't sensing the flame, so the gas valve shuts back off. A draft near the pilot or a dirty pilot orifice can also cause it. Homes here rely on the furnace from September through May, so a pilot that won't hold needs attention before the next cold stretch. A contractor can test the thermocouple and clean or adjust the pilot assembly.
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