HVAC Repair in Clarksville, 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 Montgomery County will get in touch.
Tell us about the job
It takes about a minute.
Your system runs almost year round in Montgomery County
Heat runs October through April here. Cooling runs May through September. That leaves almost no season where the system sits idle, and most homes run it on electric heat, so the same equipment carries both jobs.
Winter nights average 30°F, cold enough that a heat pump or furnace cycles on and off for hours at a stretch. Summer afternoons average 88°F, and the compressor runs long stretches to keep up. Montgomery County has seen 103 damaging wind events and 13 winter storms over the past ten years, and one in five Tennessee households lost power for a full day or more in 2024. When the power drops in a hard freeze and comes back hours later, the system has to catch up on a house that has gone cold, and that is when a weak part gives out.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 30°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 room temperature, since a setting bumped even a degree or two can leave the furnace sitting idle. If that looks right, check the breaker, since a tripped one will shut the whole system down with no other sign. Furnaces also stop for reasons you cannot see from the thermostat, like a dirty filter choking airflow or an igniter that has failed, and those need a contractor to look at.
- Why is my system running but not cooling the house?
- If air is moving but it is not cold, check the filter first. A filter clogged with dust blocks airflow across the coil, and the coil can ice over when that happens, which makes cooling worse the longer it runs. Also check the outdoor unit and clear away any leaves or debris pressed against it. If the filter is clean and the outdoor unit is clear, the system may be low on refrigerant or have a failing part, and that needs a contractor to diagnose.
- What can I check before calling for HVAC repair?
- Check the thermostat settings and batteries first, since a dead battery or a setting switched to the wrong mode looks exactly like a bigger problem. Next check the breaker panel for anything tripped. Look at the filter and replace it if it is dirty, since a clogged filter alone can cause weak heating, weak cooling, or a system that shuts off on its own. If the outdoor unit is covered in leaves or debris, clear it. Telling the contractor what you found, and when the problem started, helps them get to the real issue faster.