HVAC Repair in Nashville, 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 Davidson County will get in touch.
Tell us about the job
It takes about a minute.
Twelve months of work, in a county that loses power
Your system doesn't get an off season here. Heat runs October through April, then cooling takes over for May through September, with no real rest between the two.
Winter nights average 31°F, cold enough that the furnace cycles on and off most of the night. Summer afternoons climb to 88°F, and the compressor runs long hours to keep up. Most homes here heat with electricity, so when storms take the power out, the heat goes with it. Davidson County has seen 10 winter storms and 462 damaging wind events over the past ten years, and about one in five Tennessee households went at least a day without power in 2024. When the power drops, so does the temperature in the house.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 31°F
- the average winter night it heats against
- 88°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Why is my heat not working?
- Start with the thermostat. Make sure it is set to heat and the temperature is set above the room temperature, since a setting bumped a degree or two can look like a dead system. Check your breaker panel next, since a tripped breaker will shut the furnace down with no other warning. If the thermostat has batteries, swap them before anything else. If the furnace has power and still will not fire, the igniter or the flame sensor is a common reason, and that is a job for a contractor to test and replace.
- 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 the coil can ice over when that happens, which makes the problem worse the longer it runs. Look at the outdoor unit too. If the fan is not spinning or the unit is packed with leaves and grass clippings, it cannot move heat out of the house no matter how long it runs. If the filter is clean and the outdoor fan is turning, the system may be low on refrigerant, and that takes a contractor to check and repair.
- What can I check before calling for HVAC repair?
- Check the thermostat settings and batteries, then check the breaker panel for anything tripped. Look at the air filter and replace it if it is gray or clogged, since a dirty filter causes both heating and cooling problems. For a furnace, make sure the switch that looks like a light switch near the unit is turned on, since that shuts the furnace off completely when flipped. For central air, check that the outdoor unit is clear of leaves, dirt, and anything blocking it. If you have gone through these and the system still is not working right, a contractor will need to look at it directly.