Heat Pump Repair · Northeast Florida
A heat pump stuck in defrost, failing to switch modes or leaning on backup heat costs you every cold morning. We find the cause with measurements and quote it in writing first.
At a glance
Why this happens in North Florida
Heat pump problems tend to show up on the colder mornings, the toughest hours for a heat pump. As the outdoor temperature drops, its heating capacity drops too, just as the house needs more heat.
On cold, damp mornings the outdoor coil can frost over. The system handles this with a defrost cycle: it briefly runs in cooling mode to warm the coil, usually with the heat strips on so the air inside stays warm. Steam rising off the unit during defrost is normal.
Because a heat pump also does all the cooling, it runs most of the year. The reversing valve, defrost controls and contactor see far more cycles than a furnace would. See all heating services.
What we check
A heat pump fault can hide in one mode and show up in the other, so we test heating and cooling on every visit and show you the readings.
The thermostat adds heat strips automatically when the heat pump can’t keep up, during defrost, or after a big jump in the setting. AUX on a cold morning is normal. AUX all day is not.
This setting shuts the heat pump off and runs the strips alone. Use it only if the outdoor unit is damaged or iced solid, then call. Strips use far more electricity than the heat pump.
How it works
Call (904) 467-1100 or book online, Monday through Saturday, 8 AM to 8 PM. Note what the thermostat shows and whether the outdoor unit is iced.
The residential diagnostic fee is $129. Mr Gary tests heating, cooling and defrost, then shows you the readings.
You get a written quote before any work starts. Go ahead with a recommended repair over $250 and the $129 fee is waived.
If an older system has a failed compressor or reversing valve, we will price a replacement next to the repair so you can compare the two.
Related work
Straight answers
That is usually a normal defrost cycle. The unit warms the outdoor coil to melt frost, and the meltwater gives off steam. It’s a problem only if ice keeps building and never clears.
Not as a habit. Emergency heat turns off the heat pump and runs only the electric strips, which costs much more to run. Use it if the outdoor unit has failed, then call for service.
Heat pump air comes out cooler than furnace air, so warm rather than hot can be normal. If it feels cool or the house can’t hold temperature, the defrost controls, reversing valve or refrigerant charge may be at fault.
On the coldest mornings, long run times with some auxiliary heat can be normal. If it runs constantly on mild days, or AUX stays on all day, have it checked.
The residential diagnostic fee is $129, waived if you go ahead with a recommended repair over $250. You get a written quote before any work starts.
Langston’s Heating & Air Conditioning · Licensed CMC1251311 · Mon–Sat 8 AM–8 PM
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