The short answer
Thermal Services repairs, maintains and replaces heat pumps across Rock Hill and the surrounding area, including systems stuck on auxiliary heat, units that won't defrost, and heat pumps that can't keep up. Call (704) 701-6478.
Common heat pump problems we fix
- Running on aux heat all the time: the heat pump itself isn't carrying the load, and the expensive backup strips are.
- Iced-over outdoor unit that never clears: defrost controls, sensors or low refrigerant.
- No heat or no cooling: reversing valves, capacitors, contactors, fan motors, and thermostat wiring.
- High bills with no obvious cause: often refrigerant charge, airflow or thermostat setup.
Replacing a heat pump
If yours is at the end of its life, we'll size a new one for your house and walk you through efficiency options and whether a dual-fuel setup makes sense if you have natural gas. See installation and replacement for how we approach new systems.
Get more from the one you have
A heat pump works in both seasons, so it needs attention in both. Clean coils and correct refrigerant charge make the biggest difference to winter efficiency. See maintenance.
Common questions
Do heat pumps work in Rock Hill winters?
Yes. York County winters are mild, and most winter days are well above the temperatures where a modern heat pump starts to struggle. On the coldest mornings, backup electric heat strips or a gas furnace (in a dual-fuel setup) help out.
How long does a heat pump last?
Usually about 10 to 15 years here. Because a heat pump heats and cools, it runs more hours per year than an air conditioner, so maintenance matters twice as much.
Why is my heat pump blowing cool air in winter?
Heat pump air is usually 90 to 100 degrees, which feels cool compared with a gas furnace. If the house holds temperature, it's working. During a defrost cycle, air can briefly feel cooler, which is also normal.
What is a dual-fuel system?
A heat pump paired with a gas furnace instead of electric heat strips. The heat pump handles mild weather efficiently, and the furnace takes over when it gets cold. It's a common setup in homes that already have natural gas.