Heating & Heat Pump Repair
Most heating in this region comes from a heat pump, which means the same equipment that cools the house in July has to warm it in January.
Request Heating & Heat Pump RepairA heat pump runs the refrigeration cycle in reverse to heat, which makes it far more efficient than resistive electric heat. It also means a heat pump has components that a straight cooling system does not: a reversing valve that switches the cycle, a defrost control that periodically melts ice off the outdoor coil, and usually an auxiliary heat element to supplement it in cold weather.
When heating fails, the fault is frequently in one of those heat-pump-specific parts rather than in the refrigeration circuit itself, which is why heat pump diagnosis is not the same as air conditioning diagnosis.
Heat pump specific faults
A reversing valve that sticks leaves the system cooling when it should be heating, or the reverse. A defrost control that fails lets the outdoor coil ice up until the system loses capacity entirely. Auxiliary heat that runs constantly points either to a failed reversing valve or to the heat pump not running at all, since the strip heat is only meant to supplement. Each of those needs testing rather than guessing.
Defrost and why it matters here
In heating mode the outdoor coil runs cold and collects frost, so the system periodically switches briefly into cooling mode to melt it. In this climate that cycle matters on the handful of cold, damp mornings the region gets. When defrost malfunctions, ice builds on the outdoor unit, airflow through the coil is blocked, and the system runs but produces little heat.
How cold it actually gets
The heating season here is short and mild, which means heat pumps operate efficiently for almost all of it and the auxiliary elements rarely need to run. When auxiliary heat runs frequently, that is a signal rather than normal operation, and it will also show clearly on the electricity bill.
When to call
- The system blows cool air in heating mode
- The outdoor unit ices up and stays iced
- Auxiliary or emergency heat runs constantly
- The system will not switch between heating and cooling
- You hear unusual noise when heating starts
- Heating worked last winter and does not now
How the work is handled
- Confirm the symptoms and whether the fault is heating only
- Test the reversing valve and its control circuit
- Check the defrost control and outdoor coil condition
- Verify auxiliary heat operation and staging
- Repair the fault and confirm both heating and cooling operation
What affects the cost
We do not quote a number before seeing the property, because the same job on two similar houses can need different work. These are the factors that move the scope:
- Which component has failed, particularly if it is the reversing valve
- Whether refrigerant work is required alongside the repair
- Access to the air handler and the outdoor unit
- Age of the system and parts availability
- Whether the fault is electrical, mechanical or control related
- Condition of the defrost board and sensors
Frequently asked questions
Why is my heat pump blowing cold air?
Common causes are a failed reversing valve, a defrost control fault, low refrigerant, or auxiliary heat running while the compressor is not. Which one it is needs testing, because the symptoms overlap considerably and the fixes are very different.
Is ice on the outdoor unit normal?
A light frost during a defrost cycle is normal. A unit that stays heavily iced over means defrost is not working, which blocks airflow and cuts heating capacity. That needs repair rather than being left to thaw.
Why does my emergency heat run so often?
Emergency or auxiliary heat is meant to supplement the heat pump, not replace it. If it runs constantly, the heat pump is usually not running or not performing, and the strip heat is covering for it. That is a symptom worth investigating, and it shows up on the bill.
Do heat pumps work in Florida winters?
Very well. The heating season here is short and mild, which is close to ideal for heat pump operation. The system runs efficiently through almost all of it, and the auxiliary elements rarely need to run if the equipment is working correctly.
Related services
AC & Heating Service across Tampa Bay and Lakeland
The mild, short heating season here suits heat pumps well, which is why an auxiliary heat element running frequently is a fault signal rather than normal winter behaviour. We work throughout Tampa, Brandon, Riverview, Valrico, Plant City, Lutz, Land O' Lakes, Wesley Chapel, Odessa, Zephyrhills, Lakeland.
What we see most often in this region
- Reversing valves sticking on systems unused in heating mode for months
- Defrost controls failing unnoticed during the long cooling season
- Auxiliary heat running constantly and inflating winter bills
- Systems that sat idle through summer and fail at first cold snap