HVAC Repair in Twin Falls, ID
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 Twin Falls County will get in touch.
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Nine months of heat, cold nights, and storms that cut the power
Your furnace runs from September through May here. On winter nights that average 21°F, it cycles on and off for hours to keep up, and every cycle puts wear on the igniter and the burner. When the igniter finally gives out, the furnace won't light at all, and the house goes cold fast at 21°F outside.
Summer only asks your air conditioner to work in July and August, but afternoons averaging 83°F still push the compressor and the fan motor hard for those two months. Twin Falls County has also seen 19 winter storms and 28 damaging wind events over the past ten years, and statewide, 11% of Idaho households lost power for a day or more in 2024. A furnace that loses power mid-winter needs to come back on by itself, and if it doesn't restart, or won't light after an outage, that's a sign something else needs a look.
- 9 months
- September through May, your system heats
- 2 months
- July through August, it cools
- 21°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 $90 a year off heating and cooling for a typical Twin Falls County home.
Estimates for a typical Twin Falls County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Idaho 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.
Idaho requires HVAC contractors to hold a state license.
Idaho licenses HVAC contractors through the state's HVAC Board. That license belongs to the contractor, not to this one job, so the same license stands behind whatever work they do in your home or anyone else's.
For a repair on your heating and cooling system, that license is what stands behind the person doing the work. There is no separate job-by-job check here. The license itself is the record Idaho keeps.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- Why is my heat not working?
- Most often the igniter has failed or the flame sensor is dirty and shutting the burner off as a safety measure. A thermostat set wrong or batteries dying can also read as no heat when the furnace itself is fine. On gas furnaces a pilot light out or a tripped breaker is worth checking first. With winter nights here averaging 21°F, a furnace that stalls out for even a few hours matters, so if a reset doesn't bring it back a contractor should look at it the same day.
- Why is my system running but not cooling the house?
- The blower may be moving air, but the air conditioner itself has stopped cooling it, usually from a dirty coil, a low refrigerant charge, or a clogged filter starving the system of airflow. Check the filter first, since a filter packed with dust chokes off air before it ever reaches the coil. If the filter is clean and the air still isn't cold, the coil or the refrigerant charge needs a contractor's attention.
- What can I check before calling for HVAC repair?
- Check the thermostat first, the batteries, the setting, and whether it's set to heat or cool as intended. Check the filter next, since a clogged one can make a furnace or air conditioner act like it's failing when it just can't move air. Look at the breaker panel too. After a wind event, and this area sees plenty of them, a tripped breaker is a common cause of a system that won't start at all. If none of that fixes it, a licensed contractor can diagnose what's actually wrong.