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Common AC Issues

System Wont Turn On

Running Continuously

Short Cycling

Air Not Cold

Poor Air Flow

Loud / Unusual Noice

System Won't Turn On?

Possible Causes:

  • Thermostat is not set correctly or not working (check batteries).
  • Electrical breaker is tripped.
  • Drain line is blocked.
  • Faulty electrical wiring.

System Runs Continuously?

Possible Causes:

  • Thermostat is not set correctly or not working (check batteries).
  • Dirty air filter.
  • Air ducts are leaking.
  • Refrigerant is low and/or leaking
  • Dirty or frozen evaporator coils.
  • HVAC unit is not sized properly for conditioned area.

Short Cycling?

Possible Causes:

  • Dirty air filter.
  • Evaporator coils are iced over or need cleaning.
  • Electrical problems.
  • HVAC system is not sized properly space.
  • Refrigerant is low and/or leaking.

Air Not Cold?

Possible Causes:

  • Thermostat is set incorrectly.
  • Improper venting: make sure all vents are open and directed correctly.
  • Dirty air filter (replace monthly).
  • Low or leaking refrigerant.
  • Air ducts are leaking.
  • Condenser needs cleaning.
  • Condenser fan is not working.
  • Compressor is bad.

Poor Air Flow?

Possible Causes:

  • Dirty air filter (replace monthly).
  • Improper venting; make sure all vents are open and directed correctly.
  • Air leaking from duct work.
  • HVAC system is not sized properly for the space.

Loud / Unusual Noice?

Possible Causes:

  • Drain line is clogged.
  • Refrigerant is leaking.
  • Outside condenser fan is impaired or obstructed.
  • Condenser motor is failing.
  • Inside blower fan belt needs adjusting or replacing.
  • Electrical wiring issues.