HVAC Repair in Hendersonville, TN
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 Sumner County will get in touch.
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Hendersonville runs its system almost every month of the year
Heat runs October through April here, seven months out of the year. Cooling takes over for the other five, May through September. There is almost no month when the system just sits idle.
Winter nights average 30°F, cold enough that the furnace or heat pump cycles on and off through the night to hold the house steady. Summer afternoons average 87°F, and the compressor runs long stretches to keep up. 57% of homes here heat with electricity, so that load falls on the same electrical system that has to hold up through storms. Sumner County has seen 13 winter storms and 151 damaging wind events over the past ten years, and in 2024, 20% of Tennessee households went at least a full day without power.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 30°F
- the average winter night it heats against
- 87°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Why is my heat not working?
- The most common reason is the thermostat, the pilot light, or the igniter, so check those first. If your thermostat screen is blank, the batteries may be dead or a breaker tripped. A gas furnace that will not light usually has a dirty flame sensor or a failed igniter, and neither one is something to force. With winter nights around here dropping to 30°F, a furnace that is down for more than a few hours is worth a call the same day.
- Why is my system running but not cooling the house?
- If the blower is running but the air is not cold, check the air filter first. A filter clogged with dust chokes airflow across the coil, and the coil can ice over when that happens. Outside, make sure the condenser unit is not blocked by leaves, grass clippings, or a fence panel, since it needs open air around it to move heat out of the house. If the filter is clean and the outdoor unit is clear, the system likely needs refrigerant or a part checked by a contractor.
- What can I check before calling for HVAC repair?
- Start with the thermostat. Make sure it is set to heat or cool as needed, the batteries are good, and the temperature setting actually calls for the system to run. Next, check the air filter and replace it if it is gray or clogged, since a blocked filter causes problems that look like bigger failures. Check your breaker panel for a tripped breaker, especially after a storm. If the outdoor unit is covered in leaves or debris, clear it. If none of that fixes it, a contractor will need to look at the equipment itself.