Problem
The AC system runs but cannot keep the house cool during hot weather.
Possible Causes
Dirty air filter
Low refrigerant
Dirty condenser coils
Undersized AC unit
How To Fix It
Replace the air filter
Check that outdoor unit coils are clean
Close doors and windows to keep cool air inside
Set thermostat to a reasonable temperature
When To Call A Professional
If the AC cannot keep up even during moderate heat, a technician should inspect refrigerant levels and system performance.
ProblemThe thermostat displays a temperature that does not match the actual room temperature. Possible CausesThermostat sensor malfunctionPoor thermostat placementDead batteriesDust inside the thermostat How To Fix ItReplace thermostat batteriesClean dust from the thermostatCheck that the thermostat is not near heat sourcesReset the thermostat settings When To Call A ProfessionalIf the thermostat continues displaying incorrect temperatures,…
Problem Some areas of your home are cool while others remain warm. Possible Causes How To Fix It When To Call A Professional If airflow issues persist or ducts need balancing.
ProblemA musty or moldy smell comes from the air conditioner when it is running. Possible CausesMold in the evaporator coilDirty air filterClogged condensate drain line How To Fix ItReplace the air filterClean visible ventsCheck for moisture buildup near the indoor unit When To Call A ProfessionalMold inside the HVAC system may require professional cleaning.
ProblemThe outdoor condenser fan does not spin during operation. Possible CausesFaulty capacitorBurned motorElectrical problems How To Fix ItTurn off the unitCheck for debris blocking the fan When To Call A ProfessionalFan motor replacement requires HVAC repair.
ProblemWater is leaking from the bottom of the water heater and may begin pooling around the base. Possible CausesLoose drain valveTank corrosionCondensation buildupFaulty pressure relief valve How To Fix ItInspect the drain valve for drippingDry the area and determine the leak sourceCheck nearby plumbing connectionsMonitor the heater during its heating cycle When To Call A…
ProblemA burning smell comes from the vents when the AC system runs. Possible CausesDust burning off componentsElectrical wiring issueOverheating motorDirty air filter How To Fix ItTurn off the AC systemReplace the air filterCheck for dust buildup near ventsAllow the system to cool before restarting When To Call A ProfessionalIf the burning smell continues, an HVAC…