Problem
The air conditioning unit starts and stops frequently instead of running normally.
Possible Causes
Dirty air filter
Thermostat malfunction
Low refrigerant levels
Oversized AC unit
How To Fix It
Replace or clean the air filter
Check thermostat settings
Ensure vents are not blocked
When To Call A Professional
Short cycling can indicate refrigerant problems or system sizing issues requiring HVAC service.
ProblemThe AC system runs but cannot keep the house cool during hot weather. Possible CausesDirty air filterLow refrigerantDirty condenser coilsUndersized AC unit How To Fix ItReplace the air filterCheck that outdoor unit coils are cleanClose doors and windows to keep cool air insideSet thermostat to a reasonable temperature When To Call A ProfessionalIf the AC…
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.
ProblemWater leaks or the AC system shuts down due to drainage issues. Possible CausesClogged condensate lineAlgae buildupBlocked drain pan How To Fix ItClear the drain line with a wet/dry vacuumInspect the drain pan When To Call A ProfessionalPersistent clogs may require professional cleaning.
ProblemThe AC system appears to be running but little or no air comes from the vents. Possible CausesBlower motor failureBlocked air filterClosed ventsDuctwork blockage How To Fix ItReplace the air filterOpen all vents in the houseCheck thermostat fan settingsRestart the HVAC system When To Call A ProfessionalIf airflow does not return, the blower motor or…
ProblemThe AC air filter becomes dirty much faster than expected. Possible CausesExcess dust in the homePets shedding hairClogged ductworkPoor indoor air circulation How To Fix ItReplace the air filterVacuum vents and surrounding areasKeep doors and windows closed during coolingConsider using higher quality filters When To Call A ProfessionalIf filters continue clogging quickly, duct cleaning or…
ProblemThe AC system randomly shuts off and then starts working again. Possible CausesLoose electrical connectionThermostat malfunctionCircuit breaker issueFaulty capacitor How To Fix ItCheck the breaker panel for trippingInspect thermostat batteriesRestart the HVAC systemListen for unusual sounds from the outdoor unit When To Call A ProfessionalIf the system continues losing power, an HVAC technician should inspect…