A snow-covered suburban house at dusk with one illuminated window and a double garage door.

HVAC Repair in Guthrie, OK

Homes here need heat from October through April and cooling from May through September. If your system quits, tell us what it's doing and a licensed contractor who covers Logan County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
A gray forced-air furnace with metal ductwork stands in an unfinished basement with exposed wooden joists, concrete walls, and a single hanging light bulb.

Guthrie runs its system almost year round

Your furnace and your air conditioner both work hard here. Heat runs October through April, seven months, with winter nights averaging 29°F. Cooling takes over May through September, five months, against summer afternoons that hit 92°F. That leaves almost no month where the system sits idle, and parts on both sides wear from steady use rather than a few hard weeks.

Logan County has also seen 82 damaging wind events and 10 winter storms over the past ten years. Wind can knock out the power an outdoor AC unit or furnace blower needs to run, and a quarter of Oklahoma households lost power for at least 24 hours in 2024. When the power drops mid-cycle, most systems come back on their own once it returns. If yours doesn't start back up, or the heat won't keep pace on a cold night, that's a sign something inside needs a look.

7 months
October through April, your system heats
5 months
May through September, it cools
29°F
the average winter night it heats against
92°F
the average summer afternoon it cools against
Isometric cutaway illustration of a single-story house showing interior rooms with furniture, a furnace unit with connected ductwork and a tall vertical flue pipe extending above the dark shingled roof.
Your system heats October through April and cools May through September.

NOAA nClimDiv, 1991–2020 normals

Oklahoma requires HVAC contractors to hold a state license.

That license comes from the Construction Industries Board. It means the contractor was tested and is on record with the state before ever touching your system. The license belongs to the contractor, not the job, so the same license covers a furnace repair today and a different repair next year for someone else. It does not mean the state inspected this particular job.

For a repair on a heating and cooling system in Logan County, that state license is what stands behind the work. There is no separate per-job sign-off beyond it. The license itself is the record that the person or company doing the repair met the state's requirements to do this kind of work.

Source: Oklahoma State Legislature

Why is my heat not working?
The most common reason is a bad igniter or a flame sensor that has built up a film and can no longer detect a flame. Thermostat settings and a dead batteries in the thermostat are worth ruling out first, since those are the simplest fix. If the blower runs but no warm air comes out, the problem is likely with the heat source itself, not the fan. A tripped breaker or a switch near the furnace that got bumped off can also cut power to the whole system, so check those before assuming a bigger repair is needed.
Why is my system running but not cooling the house?
If the system runs but the air coming out is not cold, the refrigerant charge is likely low, usually from a leak somewhere in the line. A dirty air filter can also cause this, since it blocks airflow across the indoor coil until the coil ices over and stops cooling. Check the filter first and replace it if it is dark or clogged. If the filter is clean and the air still is not cold, the problem is inside the system and needs a contractor to find it.
What can I check before calling for HVAC repair?
Check the thermostat first. Make sure it is set to heat or cool as needed and that the batteries are not dead. Next check the breaker panel for a tripped breaker, since a furnace, air conditioner, and outdoor unit each usually have their own circuit. Look at the air filter and replace it if it is visibly dirty, since a clogged filter causes both weak heating and weak cooling. If the outdoor unit is not running at all, check that nothing is blocking it, like leaves or debris after a storm. If none of that fixes it, a licensed contractor will need to look at the system directly.