Heat Pump Installation & Repair in Philadelphia
Heat pumps confuse homeowners because they both heat and cool, and because some behaviors that look like failures are normal. The repair calls that matter sound like this: the heat pump blows cold air in heating mode, it blows warm air in cooling mode, it will not switch between heat and cool, ice builds up on the outdoor unit and never clears, it short cycles, the auxiliary or emergency heat runs constantly, energy bills spike in winter, or the system stops responding to the thermostat.
Defrost cycles are normal in cold weather: the outdoor unit briefly reverses to melt frost, and you may see steam and hear the fan stop for a few minutes. Ice that stays thick, grows, or never defrosts is not normal. Likewise, auxiliary heat kicking in on very cold nights can be normal; auxiliary heat running constantly in mild weather is not.
What a technician checks first
A heat pump diagnosis typically covers the thermostat and mode settings, air filter and airflow, indoor and outdoor coils, refrigerant pressures, the reversing valve, defrost controls and sensors, the outdoor fan and compressor, auxiliary heat elements and controls, and ductwork where the system is ducted.
The reversing valve is the part that makes a heat pump a heat pump — it flips the system between heating and cooling. When it sticks or fails, the system heats when it should cool or vice versa, and that is a distinctive diagnostic clue.
Common heat pump problems, in plain language
Blowing cold air in winter. Can be a thermostat setting, a stuck reversing valve, low refrigerant, a defrost problem, or auxiliary heat that is not engaging when it should.
Blowing warm air in summer. Often a reversing valve, refrigerant, airflow, or control issue — the same system, the opposite symptom.
Outdoor unit iced over. Light frost that defrosts is normal. Thick ice that persists points to a defrost control or sensor failure, low refrigerant, or restricted airflow.
Short cycling. As with other systems, clogged filters, refrigerant issues, thermostat placement, or an oversized system can cause it.
Auxiliary heat always on. If the heat pump cannot keep up or a sensor or control has failed, auxiliary heat takes over and bills climb. That needs diagnosis, not just a higher thermostat setting.
No response to the thermostat. Check settings, batteries, and breakers first, then control, wiring, and component failures.
Installation: ducted heat pumps and what to consider
A ducted heat pump uses existing ductwork to heat and cool the whole home. Sizing follows the same principle as other systems: too large short cycles and handles humidity poorly; too small runs constantly and struggles on the coldest and hottest days. Duct condition matters too — leaky or undersized ducts undermine even a well-sized heat pump.
In Philadelphia’s climate, a heat pump’s cold-weather performance and the role of auxiliary or backup heat should be discussed plainly before installation, not discovered in January.
Typical Philadelphia market ranges, not quotes from Philly HVAC Connect: ducted heat pump $7,000–$16,000 — final price depends on an on-site diagnosis, not a quote. Size, efficiency, ductwork work, electrical work, and installation complexity all move the final figure.
Our heat pump service process
What you can check before you call
- Thermostat set to the correct mode (heat or cool), set appropriately, and on auto.
- Air filter — replace if dirty.
- Breakers and outdoor disconnect on.
- Outdoor unit clear of leaves, snow, and debris, with airflow around it.
- Whether the outdoor unit is iced, and whether defrost cycles clear it.
Do not chip ice off the outdoor coil, open the unit, or attempt refrigerant or electrical work yourself.
Frequently asked questions
Why is my heat pump blowing cold air in winter?
It may be in defrost mode briefly, which is normal, or it may have a reversing valve, refrigerant, airflow, or auxiliary heat problem. If cold air persists beyond a defrost cycle, schedule a diagnosis.
Is ice on my outdoor unit normal?
Light frost that melts during defrost cycles is normal in cold weather. Thick, persistent ice that never clears is not, and points to a defrost, refrigerant, or airflow problem.
Why is my auxiliary heat always running?
Auxiliary heat should be occasional in very cold weather. Constant auxiliary heat in mild weather usually means the heat pump is not keeping up or a control or sensor has failed.
Why won’t my heat pump switch from heat to cool?
A stuck reversing valve, thermostat, or control failure is the usual cause. Note which mode it is stuck in — that helps diagnosis.
Should I replace my furnace and AC with a heat pump?
That depends on your ductwork, your home’s heating load, your fuel situation, and how you use the home. A heat pump can replace both functions in many homes, but the assessment should cover cold-weather performance and backup heat plainly.
What does a ducted heat pump cost in Philadelphia?
Typical Philadelphia market ranges for a ducted heat pump are $7,000–$16,000 — final price depends on an on-site diagnosis, not a quote.
Call Philly HVAC Connect
Heat pump icing up, stuck in one mode, or not keeping up? Call Philly HVAC Connect at (267) 736-0383, 7 days a week, or visit the contact page to request service. Email: phillyhvacconnect@gmail.com. We serve the Philadelphia tri-state area (Pennsylvania, New Jersey, Delaware).