HVAC Repair in Rock Hill, SC
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 York County will get in touch.
Tell us about the job
It takes about a minute.
Rock Hill runs its system almost year round
Your heat runs from October through April here, and the air conditioner picks up right after for May through September. That is 12 months of work for one system, with almost no rest between seasons. On winter nights near 33°F the furnace cycles on and off most of the night, and on summer afternoons near 89°F the air conditioner runs long stretches trying to hold the house steady.
York County also sees real storms, 78 damaging wind events and 3 winter storms over the last ten years. Wind that strong can knock loose an outdoor unit's connections or leave debris in the coil. Almost half of South Carolina households went at least a day without power in 2024, and a system that loses power and doesn't come back on, or one that was already worn down before the storm hit, tends to show its problems the next time it's asked to run hard.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 33°F
- the average winter night it heats against
- 89°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 warning. If the furnace has a standing pilot, look for the flame. If it uses an igniter instead, listen for the burners trying to light and failing, which usually means the igniter or the flame sensor needs attention from a contractor. Nights here average 33°F in the winter, so a furnace that will not hold heat is worth getting looked at quickly.
- Why is my system running but not cooling the house?
- Check the air filter first. A filter clogged with dust chokes off airflow and can freeze the coil, and a frozen coil stops cooling even though the system keeps running. Check the thermostat setting and make sure it is set to cool, not just fan. Look at the outdoor unit too. If the fan out there is not spinning, or the unit is covered in leaves or debris, it cannot get rid of the heat it is pulling from the house. With summer afternoons here reaching 89°F, a system running without cooling needs a look from a contractor before the heat inside builds up.
- What can I check before calling for HVAC repair?
- Check the thermostat first. Confirm it is set to heat or cool as needed, the batteries are good if it uses them, and the temperature setting is actually calling for what you want. Check the breaker panel for anything tripped. Check the air filter and replace it if you cannot see light through it, since a blocked filter causes problems that look like bigger failures. Look at the outdoor unit for debris or ice, and listen for whether the system is running at all or just not doing its job. If none of that turns up an answer, a contractor can diagnose the rest and price the repair for your house.