24/7 Emergency Line 630-341-3996 francohvac@hotmail.com

HVAC Air Conditioner Repair and Replacement Near Glendale Heights IL

HVAC Air Conditioner Repair and Replacement Near Glendale Heights IL

There’s nothing worse than switching on your central air conditioner only to hear an awful sound! So is your central AC not working? Before you contact an HVAC professional to help you repair your central air conditioner, there are a few troubleshooting tricks you can try. Continue reading to learn troubleshooting tips for your central air conditioner.

AC Won’t Turn On

If you can’t switch on your central air conditioner, you most likely have a faulty circuit breaker or fuse, an improperly set thermostat, or an internal system switch being off.


  • Ensure your central air conditioner receives power from the electrical panel.
  • Replace your fuse or reset the circuit breaker if your air conditioner is not getting power.
  • Check your AC thermostat settings to ensure it’s on “cool.”
  • Check your condensation overflow tray for water. A sensor on your overflow tray may switch off your AC when water is collected.
  • Check that all the central air conditioner switches are set to the “on” position.

AC Turns On But Does Not Cool

If you can hear your AC operating, but it doesn’t cool your home, this could mean something is blocking airflow in your system compressors or filters. Low refrigerant levels could make your AC unable to cool your home because humidity and heat cannot be removed from the air without the right refrigerant level.


  • Look at the thermostat to ensure it’s working correctly.
  • Check the condenser to see if it’s blocked or dirty. If yes, clean it to clear the blockage.
  • Clean or change your air filter
  • Check if there is any ice on the coils. If so, switch on the fan to melt the ice.
  • Check or clean the outdoor compressor. You could have insufficient refrigerant in the system or a faulty compressor, which would require a professional to fix.

Poor Airflow Circulating

You will notice poor airflow if your AC system filter is dirty or ductwork has become blocked, crimped, or even disconnected.


  • Ensure that your AC air filter is clean. If dirty, try to replace or clean the air filter.
  • Check ductwork to ensure it’s not disconnected.
  • Check registers damper on ducts to make sure they are set to an open position.

Weird Noises

You should feel that your central air conditioner is working. If your unit sounds like it’s struggling to keep your home cool – it’s probably struggling. Strange vibrations, squealing, or grinding noises mean that there’s a problem to fix.


  • Check your thermostat and clear debris from around your outdoor unit
  • Check and replace your air filters. It may be dirty or clogged, causing weird noises.

Central AC Not Working? We Can Help

If you’re having issues with your central air conditioner in Glendale Heights, IL, Fahrenheit Mechanical Inc. can help you. We deliver outstanding customer service and expert workmanship and can get your system back up and running in no time. Contact us today at 630-341-3996 to schedule an appointment with one of our technicians.



HVAC Air Conditioner Repair and Replacement Near Glendale Heights IL

Fahrenheit Mechanical

+1 630-383-1672

HVAC Air Conditioner Repair and Replacement Near Glendale Heights IL

825 South Rohlwing Road

Addison IL 60101 US

View Larger Map