It seems as if air conditioning units always fail at the most inopportune times: usually, right in the middle of a sweltering heatwave. To reduce the chance of this happening, it is recommended that you schedule a maintenance inspection for your HVAC unit before the two major operating seasons (summer and winter) each year.

Not only can inspections help prevent major breakdowns, but the technicians will also alert you to any problems that the unit might have. Here are some of the most common air conditioning problems:

  • The AC unit does not come on. There a few things that you or a technician should check if this happens: the circuit breaker (in case there is no power running to the unit), the thermostat (in some cases, a broken thermostat can disable the whole unit), and the debris surrounding the outside unit (if there is an excessive amount of grass or weeds around the outside unit, this debris can get sucked into the fan and disable it).
  • The AC unit is leaking. Typically, this means that the air conditioning unit is low on refrigerant. However, the solution is not to just add more. You should consult your HVAC technician so he or she can inspect the unit, repair the leak, and add the correct amount of refrigerant.
  • The AC unit is making a strange noise. Most air conditioning units make noise, but any abnormal sounds – such as rattling, banging, squealing, or vibrating – should prompt you to consult your HVAC company.
  • The AC unit is not blowing cold air. If your air conditioning unit is suddenly blowing warm air, there could be several mechanical reasons why, including a stalled condenser coil or a dangerously low amount of refrigerant. You should contact your HVAC company immediately to schedule an inspection.
  • The AC unit is working, but your house is not cool. If there are no mechanical issues with your AC unit, you should consider performing a Home Energy Audit or an HVAC System Audit to determine the cause(s). There could be many reasons why your house is not cool, including air leaks in your HVAC’s ductwork or the rest of your home.

For more information about air conditioning unit issues, watch this video or call Minnick’s at (301) 605-9112.