HVAC Repair in Cullman, AL
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 Cullman County will get in touch.
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Twelve months of work, on a system that runs on electricity
Cullman County asks for heat from October through April and cooling from May through September. That is every month of the year, and most homes here run on electric heat, so the same system carries the load both ways. Winter nights averaging 33°F mean the heat runs long stretches after dark. Summer afternoons averaging 88°F push the compressor hard for five straight months. There is no real off season for the parts to rest.
Alabama sees its share of rough weather, and Cullman County has logged 174 damaging wind events and 5 winter storms over the past ten years. Wind that strong can knock branches into an outdoor unit or knock the power out. Statewide, 18% of households went at least a full day without power in 2024. When the power comes back, most systems restart on their own, but a unit that took a hit while the power was out, or one that was already worn from a full year of running, may not come back working right.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 33°F
- the average winter night it heats against
- 88°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
Alabama requires HVAC contractors to hold a state license.
Licenses are issued by the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors.
Look up a contractor's license on the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors' website.Source: Alabama Board of Heating, Air Conditioning and Refrigeration Contractors
- Why is my heat not working?
- Most no-heat calls come down to the thermostat, the power to the unit, or the igniter. Check that the thermostat is set to heat and the temperature is above room temperature, since a stuck setting is easy to miss. Check your breaker panel too, since a tripped breaker will kill the furnace without any other sign. If those are fine, the igniter or flame sensor may have failed, and that's a repair for a licensed contractor, not something to test yourself with the power on.
- Why is my system running but not cooling the house?
- If air is moving but it is not cold, check the air filter first. A clogged filter chokes airflow across the coil, and when that happens the coil can ice over and stop cooling altogether even though the blower keeps running. Also check that nothing is blocking the outdoor unit, like grass clippings or fallen leaves, since it needs open airflow to release heat. If the filter is clean and the outdoor unit is clear, the system may be low on refrigerant, and that needs a licensed contractor to check and repair.
- What can I check before calling for HVAC repair?
- Start with the thermostat. Confirm it is set to the mode you want, heat or cool, and that the temperature setting is actually calling for the system to run. Next check the breaker panel for a tripped breaker, and check the air filter, since a dirty filter causes problems in both winter and summer. If the outdoor unit is covered in debris, clear it. If you have done all that and the system still is not working right, call a licensed contractor. Alabama requires HVAC contractors to hold a state license, so ask for it before any work starts.

