HVAC Repair in Stillwater, 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 Payne County will get in touch.
Tell us about the job
It takes about a minute.
Twelve months of work, no real break
Stillwater does not give a furnace or an air conditioner much rest. Heat runs October through April, seven months, and on winter nights that average 28°F the burner is cycling on and off most of the night to keep up. Then the system flips over and cooling runs May through September, five months, working against afternoons that average 92°F. That is all twelve months with load on one system or the other.
That much cycling wears on the parts that start the system up, the igniter on a furnace and the capacitor on an air conditioner. Storms add another way things fail. The ten years from 2015 to 2024 brought 83 damaging wind events and 7 winter storms to this area, and in 2024 a quarter of Oklahoma households lost power for at least a day. Most furnaces and air conditioners come back on by themselves once power returns, but a hard outage or a lightning strike can still take out a control board and leave a system that will not respond at all.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 28°F
- the average winter night it heats against
- 92°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Oklahoma requires HVAC contractors to hold a state license.
Oklahoma licenses HVAC contractors through the Construction Industries Board. The license belongs to the contractor, not to the job, so it applies to every repair they take on, not just this one.
For a repair to a heating and cooling system, that license is what stands behind the work here. It is the state's record of who is allowed to do this job, and it is the thing to look for before letting someone start on the system.
Source: Oklahoma State Legislature
- Why is my heat not working?
- Start with the thermostat and the power to the furnace. If the thermostat screen is blank or won't hold a setting, check the batteries first. If the furnace has power but won't fire, listen for it trying to start. A furnace that clicks and shuts off usually has an ignition problem, either the igniter or the flame sensor. If the blower runs but the air is cold, the burners aren't lighting or the gas valve isn't opening. With winter lows here averaging 28°F, a furnace that won't hold a flame needs a contractor out the same day.
- Why is my system running but not cooling the house?
- Check the air filter first. A filter clogged with dust blocks airflow across the coil, and a coil that can't get enough air will ice up and stop cooling even though the blower is running. Next check the thermostat setting and make sure it's set to cool, not just fan. If the filter is clean and the air coming out of the vents is warm, the system may be low on refrigerant or have a failed compressor, and that needs a contractor to diagnose. Outside, make sure the condenser unit isn't blocked by grass, leaves, or anything sitting against it, since summer afternoons here hit 92°F and a blocked condenser will struggle to keep up.
- What can I check before calling for HVAC repair?
- Check the thermostat batteries and settings, the air filter, and the breaker for the system before you call. A dead thermostat display often means dead batteries, not a broken furnace or AC. A filter you can't see light through will choke airflow in either heating or cooling mode, so swap it if it's dirty. Check the breaker panel too, since a tripped breaker will shut the whole system down with no warning. If all of that checks out and the system still isn't heating or cooling right, a licensed contractor will need to look at it directly. Oklahoma requires HVAC contractors to hold a state license through the Construction Industries Board, so ask for that license before letting anyone work on the system.