Common Pool Heater Problems
The heater runs but the water never warms up: often an airflow or refrigerant issue — dirty evaporator coils, a struggling fan, or low refrigerant charge. It can also simply be undersized equipment fighting a cold snap, since heat pumps lose output as the outside air temperature drops. The heater won't turn on at all: check the breaker, the thermostat setting, and the pool pump first — most heaters refuse to fire unless the pump is running with enough water flow, so a clogged filter or skimmer basket can drop flow below the pressure switch's threshold. It short-cycles: rapid on-off cycling usually points to a flow problem, a failing pressure switch, or a refrigerant issue, and is worth fixing promptly since every restart adds wear to the compressor. Our full breakdown is in Pool Heater Not Working? Common Causes in Brevard County.
What You Can Check Before Calling
Clean the skimmer basket and filter, make sure the pump runs its normal schedule, confirm the heater's set temperature is above the current water temperature, and reset the breaker once. If it still won't heat after that, further poking around tends to do more harm than good.
Why Refrigeration Experience Matters
Because a heat pump pool heater is fundamentally a refrigeration system, the same team that handles commercial refrigeration and AC repair is qualified to diagnose it correctly the first time. CoolWave services pool heaters alongside AC and commercial refrigeration across Brevard, Indian River & St. Lucie counties.