Learn · Heat Pumps
How Heat Pumps Work (Heating AND Cooling)
One system that heats in winter and cools in summer by moving heat instead of burning fuel.
A heat pump is a reversible air conditioner
A heat pump uses the same refrigerant cycle as your AC, but a reversing valve lets it run both directions: it pulls heat out in summer and pulls heat in from outdoor air in winter. Because it moves heat rather than creating it, it can deliver several units of heat per unit of electricity.
When a heat pump is the right call
Kentucky's climate is well suited to heat pumps — efficient most of the year, with a furnace or electric backup for the coldest stretches. They're also a strong fit for all-electric homes and homeowners focused on lower operating costs (measured by SEER2 for cooling and HSPF2 for heating).
Failure modes to watch for
- Constant defrost / icing — normal in moderation; excessive icing signals a problem.
- Auxiliary heat running constantly — drives bills up; often a charge or sizing issue.
- Lukewarm air — heat-pump air is cooler than furnace air by design, but truly cold air means a fault.
Proof
We size and install heat pumps for homes across Shelby County and beyond.
What to do next
Weigh it against a furnace in Heat Pump vs. Furnace, or explore heat pump services and request an installation estimate.
Keep going
About the author
Kenneth Ferrell · Founder
Kenneth Ferrell founded Ferrell's Air Conditioning & Heating in Shelbyville, Kentucky in 1980. With more than four decades in heating and cooling, he built the company into a Carrier Factory Authorized Dealer staffed by NATE-certified technicians and earned Carrier's President's Award. He still believes in honest prices and treating customers like neighbors.