Heat Pump Repair in Post Falls for Cold Winters
About 37 percent of Post Falls homes heat with electricity (Post Falls home heating fuel), and
in Coeur d'Alene the share is about 41 percent (Coeur d'Alene housing data). Electric heat here means
baseboard heaters, an electric furnace or an air source heat pump, either alone with electric backup
strips or paired with a gas furnace as a dual fuel system. Ductless heat pumps, the wall-mounted heads with an outdoor unit, show up in
additions, garages and shops.
Heat pump repair covers both halves of the system:
- Defrost control boards and coil sensors that let the outdoor coil ice over
- Reversing valves and their solenoid coils, when the unit blows cool air in heat mode
- Outdoor fan motors and fan blades, often damaged by ice
- Compressor capacitors, contactors and hard-start parts
- Auxiliary heat strips, sequencers and breakers in the air handler
- Dual fuel controls that hand heating off to the gas furnace
- Refrigerant leaks at brazed joints, service valves and coils
- Thermostats wired or set up wrong for a heat pump
Heat Pumps Below Freezing on the Rathdrum Prairie
Post Falls, Hayden and Rathdrum sit on the open Rathdrum Prairie, where the January normal low
is about 26 degrees and roughly 120 nights a year fall to 32 or below
(NOAA 1991 to 2020 normals). Every one of those nights the outdoor coil collects frost, and the heat
pump has to reverse into a short defrost cycle to clear it. That is why defrost boards, coil sensors and reversing
valves are common heat pump repairs in this climate.
Snow adds its own problems. Roof runoff dripping onto the outdoor unit freezes into a solid cap. Units set on a pad
at ground level get buried in drifts and plowed snow, which blocks airflow and lets ice climb into the fan. Raising
the unit, clearing a path for airflow and fixing gutters above it often matters as much as the part replaced.
Heat Pump Not Heating in Post Falls
Three winter symptoms point to most heat pump failures. Ice that never clears points to the defrost control or a weak
outdoor fan. Cool air from the vents in heat mode points to a reversing valve stuck in cooling or a compressor that is
not starting. A heat pump that runs nonstop while the auxiliary heat light stays on points to low refrigerant, a dirty
coil or an outdoor unit that has lost capacity. Long run times on a cold day are normal for a heat pump; those three
are not.
In summer the same outdoor unit is the air conditioner, so a heat pump repair often fixes cooling as well. See
AC repair in Post Falls for cooling problems and furnace repair for the
gas furnace in a dual fuel system. Heat pump repair covers Coeur d'Alene,
Hayden, Rathdrum and the rest of the
towns around Post Falls.
Heat Pump Questions
Do heat pumps work when it's below freezing?
Yes. An air source heat pump keeps pulling heat from outdoor air below 32 degrees, though its output drops as the temperature falls. Cold climate models are built to keep heating well below zero. When the heat pump cannot keep up, electric strips or a gas furnace take over as auxiliary or emergency heat.
What should I do if my heat pump is frozen?
A thin layer of frost that clears every hour or so is normal; that is the defrost cycle. If the whole outdoor coil is a block of ice, turn the system to emergency heat so the house stays warm, clear snow away from the unit and make sure roof runoff is not dripping on it. Do not chip ice off the coil. A heat pump that ices over completely has a defrost or airflow problem that needs a repair.
What happens when a defrost board goes bad?
The outdoor unit never switches into defrost, so ice builds on the coil until it blocks airflow and the heat pump stops heating. A failing board can also leave the unit stuck in defrost, blowing cool air indoors. The defrost sensor on the coil can cause the same symptoms.
What is the most common problem with heat pumps?
Airflow and ice. Dirty filters and coils, a failing outdoor fan motor or a bad defrost control let ice build up in winter. After that come capacitors and contactors, reversing valve problems that leave the unit stuck in cooling, and refrigerant leaks at brazed joints.
How to tell if your heat pump is failing?
Lukewarm air from the vents in heat mode, running constantly without reaching the set temperature, the auxiliary heat light coming on often in mild weather, heavy ice that does not clear, loud grinding or buzzing from the outdoor unit, and a higher electric bill with the same settings.
Why won't my heat pump heat?
Check that the thermostat is set to Heat and that both breakers, indoor and outdoor, are on. If the fan runs but the air is cool, the reversing valve may be stuck in cooling, the outdoor unit may be iced over, or the compressor may not be starting because of a weak capacitor or contactor.
How long should a heat pump run in heat mode?
Much longer than a furnace. A heat pump delivers air at a lower temperature than a furnace, so it runs longer and steadier; long run times on cold days are normal and on very cold days it may run almost continuously. Short bursts of a few minutes on and off, or running nonstop in mild weather, point to a problem.
What is the typical lifespan of a heat pump?
Shorter than a furnace or a central AC, because the compressor runs in both heating and cooling seasons. In a climate with long winters the outdoor unit works most of the year. Condition, maintenance and how the unit handles defrost matter more than its age alone.
