HVAC Repair in Maryville, 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 Blount County will get in touch.
Tell us about the job
It takes about a minute.
Blount County runs its systems almost year round
Your system works twelve months here. Heat from October through April, then cooling from May through September. That is more run time than most parts are built to shrug off, and it shows up in both directions. On winter nights averaging 31°F, the furnace or heat pump cycles on and off for hours to hold the house steady. In afternoons near 86°F, the air conditioner runs its longest stretches of the year trying to keep up.
Most homes here heat with electricity, so a heat pump or electric furnace carries that whole winter load. Wind is the other thing working against it. Blount County has logged 107 damaging wind events and 20 winter storms over the past ten years, and a fifth of Tennessee households lost power for at least a full day in 2024. When the power drops mid-cycle, whatever was running when it happened is often the first thing to act up when it comes back on.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 31°F
- the average winter night it heats against
- 86°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's set to heat and the temperature is set above the room temperature, and check that it has power if it uses a screen or batteries. If the thermostat looks fine, check your breaker panel for a tripped breaker, since a furnace or heat pump that loses power will not start. A furnace that's getting power but won't ignite often has a dirty flame sensor or a failed igniter, and neither is something to try to fix yourself. If your home heats with electric resistance heat or a heat pump, which is common here, a tripped breaker or a frozen outdoor unit can also stop heat from coming through the vents.
- 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 when that happens the coil can ice over and stop cooling the air that passes through it. Check the thermostat setting next, and make sure it's set to cool with a target temperature below the room temperature. If the outdoor unit isn't running at all while the indoor blower is, that points to a problem with the outdoor unit itself, like a failed capacitor or a tripped breaker, and that's a job for a contractor to diagnose.
- What can I check before calling for HVAC repair?
- Check the thermostat first. Confirm it's set to the right mode, heat or cool, and that the target temperature is actually calling for the system to run. Check your breaker panel for anything tripped, since a system with no power won't run no matter what the thermostat says. Look at the air filter and replace it if it's visibly dirty, since restricted airflow causes problems in both heating and cooling. If your outdoor unit has a visible disconnect switch, make sure it hasn't been bumped off. Past that, a contractor will need to look at the equipment itself to find the actual problem.