Licensed & insured · TACLA128438C Mon–Sat 8:00 AM – 5:00 PM · 24/7 emergency service Celina, TX & North Dallas
support@pandaheating.com

Heat Pump Repair & Service

Heat pumps run twelve months a year, which means twice the runtime and twice the wear of a gas system. They also fail in ways a furnace never does — and a technician who does not understand defrost cycles will happily sell you a compressor you did not need.

Symptoms we see most

Lukewarm air in heating mode, ice that never clears from the outdoor coil, a system stuck in emergency heat, a reversing valve that will not shift between heating and cooling, short cycling, or an electric bill that doubled overnight because the auxiliary strips are running constantly.

Diagnosed properly

We test the defrost board and sensor, the reversing valve and its solenoid, the outdoor thermostat and staging, the auxiliary heat strips and sequencers, refrigerant charge in both modes, and the thermostat configuration — which is wrong more often than anyone expects on heat pump systems.

All types, all brands

Conventional split heat pumps, dual-fuel systems paired with a gas furnace and packaged units from Carrier, Trane, Lennox, Goodman, Rheem and others — residential and light commercial.

Heat pump repair on an outdoor unit in Celina, TX, with digital manifold gauges connected at the service ports, R-410A refrigerant on site and the electrical disconnect open

Book heat pump repair

Same-day appointments across Celina, Prosper, Frisco, McKinney and Plano. Emergency line answered 24/7.

  • HoursMon–Sat 8:00 AM – 5:00 PM · 24/7 emergency service
  • LicenseTACLA128438C
What’s included

Heat Pump Repair — what we handle

  • Defrost board, sensor and control diagnosis
  • Reversing valve and solenoid repair or replacement
  • Refrigerant leak search and correct charge in both modes
  • Auxiliary and emergency heat strip and sequencer repair
  • Compressor, contactor and capacitor service
  • Outdoor fan motor replacement
  • Dual-fuel changeover and staging setup
Answers

Heat Pump Repair — questions we get asked

Why is ice building up on my heat pump in winter?

A light frost that clears during the defrost cycle is normal. Solid ice that never melts means the defrost cycle is not running — usually a failed defrost board or sensor, or a reversing valve that will not shift. Do not chip the ice off; call us before the coil is damaged.

Why is my heat pump blowing cool air on heat mode?

Heat pump supply air is naturally cooler than gas furnace air — around 90–100°F rather than 130°. That feels lukewarm but is normal. If it is genuinely cold, the reversing valve, charge or defrost control is the likely fault.

What is emergency heat and why is my bill so high?

Emergency heat bypasses the compressor and runs electric resistance strips only — effective but expensive. If your system is stuck there, something is preventing normal heat pump operation and it needs diagnosis before the next bill arrives.

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Heat Pump Repair available in Celina, Prosper, Frisco, McKinney, Plano, Allen, Little Elm, The Colony, Lucas, Murphy, Gunter, Pilot Point, Van Alstyne, Melissa, Anna, Aubrey and every city we serve.

Need heat pump repair?

Same-day service across Celina, Prosper, Frisco, McKinney and Plano — and a real person on the emergency line 24/7. Tell us what your system is doing and we will give you a straight answer.