Wyoming HVAC Match
A snow-covered two-story house photographed at night during a snowstorm, with one lit upper window and bare trees on either side.

Furnace Repair in Gillette, WY

Furnaces here run from September through June. If yours quits, tell us what it's doing and a licensed contractor who covers Campbell County will get in touch.

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Step 1 of 3: Equipment
An unfinished basement featuring concrete block walls, exposed floor joists, and a metal forced-air furnace with ductwork near a central pillar.

Ten months of heat, nights near 13

Your furnace runs September through June here, ten months of the year. On winter nights averaging 13°F, it is cycling on and off for hours to hold the house steady, and every one of those starts puts load on the igniter and the burner.

Campbell County has seen 49 winter storms and 202 damaging wind events over the past ten years. Wind at the vent pipe can blow out a pilot or trip a pressure switch, and a hard freeze during an outage puts real strain on a system that was already running most of the day. Just over half the homes here heat with gas, and when the furnace quits on a night that cold, it will not wait until morning.

10 months
September through June, your furnace is on duty
13°F
the average winter night it heats against
53%
of homes here heat with gas, so most furnaces here burn gas
49 winter storms
in ten years, the nights a failure hurts most
Isometric cutaway illustration of a single-story house with a dark shingled roof, showing interior rooms with furniture, a ducted air distribution system, a tall vertical flue pipe, and a gray furnace unit outside the wall.
Your furnace works hardest from November through April.

NOAA nClimDiv, 1991–2020 normals

A gray forced-air furnace with ductwork stands in an unfinished concrete basement surrounded by storage items and clutter.

A new furnace would cut about $130 a year off heating for a typical Campbell County home.

  • A new high-efficiency furnace$560 a year
  • An older furnace$690 a year

Estimates for a typical Campbell County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Wyoming 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. Check that it's set to heat and the temperature is above room level, and check the batteries if it uses them. If the thermostat looks right, check the breaker for the furnace and the switch that looks like a light switch near the unit, sometimes it gets bumped off. A furnace that still won't start after that likely has an ignition or safety switch problem, and with lows around 13°F here, that's worth getting looked at the same day.
Why is my furnace blowing cold air?
Check the thermostat fan setting first. If it's set to "on" instead of "auto", the blower runs constantly and pushes cold air between heating cycles. If the fan is set right and you're still getting cold air, the burners may not be lighting even though the blower runs, which points to an ignition problem. With heat needed here most of the year, it's not something to leave for long.
Why won't my furnace pilot light stay lit?
A pilot light that won't stay lit is usually a bad thermocouple, the small sensor that tells the gas valve the flame is burning. When it wears out, it shuts off gas to the pilot even though the flame is actually lit. Wind drafts or a dirty pilot opening can also blow the flame out, so check for anything blocking it before assuming it's the thermocouple. This isn't something to relight over and over, a contractor can test the part and replace it.
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