If you’ve noticed specific symptoms that your air conditioner has, check out our blog about troubleshooting common air conditioner problems. If, on the other hand, you have no idea where to start looking, check out this guide for parts of your air conditioner to look at in order to identify where the problem is coming from.

If you can’t identify the problem or you don’t know how to fix it, contact Max Comfort Heating & Cooling in Oshawa and Durham Region for air conditioner repair.

Check The Air Filter

Your air filter could cause a variety of problems for your air conditioner, so this is an important part of your unit to check if you’re having any sort of issues. A dirty air filter can cause decreased air flow from the air vents, ice on the refrigerant lines, a frozen evaporator coil, water leaking from your A/C, warmer or cooler spots, high energy bills, and even equipment failure.

If you’ve noticed these problems, make sure to check the air filter. It should be replaced or cleaned at least once every six months. For more severe issues related to a dirty filter, contact Max Comfort Heating & Cooling for air conditioner repair.

Check The Thermostat Settings

If your A/C doesn’t turn on at the correct temperature or you feel warm or even hot air coming from your air vents, it could be a problem with your thermostat settings. Check your thermostat and make sure it’s set to “cool” instead of “heat.” If you’re still having problems, check the user manual for the thermostat for information on how to recalibrate it. You can also contact an HVAC professional for help with the settings and calibration of your thermostat.

Check The A/C Circuit Breakers

If your air conditioner doesn’t turn on at all, check the circuit breakers for your home. Find the circuit breaker on your home’s main electrical panel. If it is flipped to the “off” position, flip it back on and try to turn your air conditioner on again. If the circuit breaker is tripped again, do not flip it back on. This could be a sign of a blown fuse or an electrical problem. You may want to contact an HVAC professional as well as an electrician if this occurs.

Check The Outdoor Unit

It may be out of sight, but your outdoor unit shouldn’t be out of mind if you’re experiencing issues with your air conditioner. The outdoor unit, also called the condenser, can cause problems like high energy bills, warm air coming from your vents, an A/C unit that doesn’t cool very well, or the need for frequent repairs.

When you examine your outdoor unit, inspect it for a buildup of dirt and debris. Remove as many leaves as possible and use a brush to gently clean the condenser. If the unit has a heavy buildup of debris, contact Max Comfort Heating & Cooling to schedule an air conditioner repair and more thorough cleaning.

Check All Of The Air Vents

If you’re having various issues with your air conditioner, another key part of the unit to check is the air vents. A closed or blocked air vent could cause problems like:

  • An A/C unit struggling to cool your home
  • Ice on the refrigerant lines
  • A frozen evaporator coil
  • Water leaking from the unit
  • A damaged compressor
  • Blower motor problems
  • High energy bills

When air vents become blocked or closed, they can spring leaks in the ductwork, which is why you’ll see a higher energy bill. If you’re having these problems, check all of the return and supply vents. Rugs, drapes, and furniture can easily block the air vents, but the good news is that they can easily be moved out of the way.


If you’re experiencing any of these issues and can’t figure out the cause, contact Max Comfort Heating & Cooling. We offer 24/7 emergency air conditioner repair service so you aren’t left without cool air when you need it most.