Heat Pump Repair in San Diego, CA
Homes here need heat from November through April and cooling from June through September. If your system quits, tell us what it's doing and a licensed contractor who covers San Diego County will get in touch.
Tell us about the job
It takes about a minute.
Your heat pump works ten months a year here
San Diego County only gives a heat pump two months off. Winter nights average 41°F from December through February, mild enough that the heat pump runs steady rather than cycling hard, and summer afternoons near 89°F keep it working just as many months on the cooling side. That kind of year-round use adds up faster than a system that gets a real rest.
Most homes here still heat with gas, so the heat pump often carries the cooling load alone through June to September and shares the winter load the rest of the year. With power interruptions affecting a real share of California households each year, a heat pump that loses power and doesn't restart on its own will leave a home without heat or cooling until someone resets it.
- 6 months
- November through April, your system heats
- 4 months
- June through September, it cools
- 41°F
- the average winter night it heats against
- 89°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
California requires HVAC contractors to hold a state license.
The Contractors State License Board is the one that licenses HVAC contractors in California, and the license belongs to the contractor rather than to any single job. It covers them across whatever work they take on, this repair included.
A heat pump repair means opening the refrigerant side of the system, and that work requires EPA Section 608 certification everywhere in the country, not just here. In California, the contractor doing the repair should carry both the state license and that federal certification, one showing they are licensed to do the work, the other showing they are certified to handle the refrigerant itself.
Sources: California Legislative Counsel · Contractors State License Board
- Why is my heat pump blowing cold air?
- In heating mode, air from the vents is meant to feel warm but not hot, so it can feel cool even when the system is working right. If the air feels truly cold, the problem is usually the reversing valve stuck in cooling mode, low refrigerant, or a frozen outdoor coil that stops the unit from pulling in heat. A dirty air filter can also cut down airflow enough that the air feels cold by the time it reaches you. A contractor can check the reversing valve and refrigerant charge to find which one it is.
- Why is there ice on my heat pump?
- A heat pump normally frosts over some in winter and clears itself through a defrost cycle every so often. If the ice is thick, covers the whole unit, or never seems to melt off, the defrost cycle has likely stopped working, or airflow across the outdoor coil is blocked. A dirty coil, a failed defrost sensor, or a fan that has stopped turning can all keep the frost from clearing. With winter lows here averaging 41°F, some frost on cold nights is normal, but heavy buildup means something in the defrost system needs a look.
- Why is my heat pump running but not cooling?
- If the unit runs but the air is not cold, the most common causes are low refrigerant, a dirty outdoor coil, or a blocked air filter cutting off airflow. Low refrigerant almost always means there is a leak somewhere in the line, since these systems do not use up refrigerant over time. On a 89°F afternoon, a heat pump that is low on refrigerant or short on airflow will run long stretches without bringing the house down to temperature. A contractor can check refrigerant pressure and the coil to find the cause.

