How to Troubleshoot Your Air Conditioning Unit

How to Troubleshoot Your Air Conditioning Unit

There's nothing worse than turning on your air conditioner only to hear a horrible noise - or no noise whatsoever! Is your air conditioning system not working? There are a few troubleshooting solutions you may want to attempt before calling in the experts. Learn how you can troubleshoot your air conditioner so you can stay comfortable during a hot day.

The Air Conditioner Won't Power On

This is among one of the most common AC issues - it just won't turn on. When you flick the switch, rather than being greeted by cold, refreshing air, you experience nothing. Usually, the problem is a loss of electricity. 

Examine your breaker panel for a tripped fuse or a blown breaker. You might be able to solve this AC problem by just flipping a switch. If it doesn't work, inspect the wires in your thermostat. A frayed or loose wire may potentially prevent your system from turning on.

Issues Setting the Thermostat

When it comes to the thermostat, malfunctions in the air conditioner's central controller might be an issue. Failure to switch on an air conditioner and an AC spewing warm air are symptoms of a thermostat problem.

First, ensure that your thermostat is adjusted precisely. Some homeowners believe that SMART technology and high-tech thermostats have eliminated the need for calibrating, but this is not the case.

Even digital thermostats must be calibrated correctly to function correctly. Calibration is what instructs your home's air conditioner to switch on when your home reaches a specific temperature.

When your thermostat is calibrated correctly but your air conditioner is still not functioning, make sure it is configured to the lowest feasible temperature. This should get the unit going. If not, it might be time to bring in the professionals.

HVAC service professionals, like the ones at TDI Air Conditioning, are capable of recalibrating both modern and older thermostats. The digital models can be more perplexing than the earlier types. Keep your owner's manual at hand to aid the technician in troubleshooting the issue.

Clogged, Leaking, or Dirty Air Ducts

Your air conditioner distributes cold, pleasant air throughout your home via ductwork. These ducts draw heated air from your home and transport it to the air conditioner for purification and cooling. Air cannot move freely if the ducts are filthy, blocked, or have a leakage.

Some homeowners are unaware that rips and other obstacles can penetrate the air conditioning ducting. While most central air systems are sealed, rats may chew their way through the ducting. Another typical cause is poor installation.

Warm air might escape and enter your home through holes or rips in the ducting. As a result, uneven cooling is the first indicator of a problem with your AC ducts. To evaluate the extent of the damage, check the air ducts. When in doubt, get an expert to do a comprehensive inspection for you.


This article discusses several of the most frequent air conditioning issues and how to solve them. Some fixes are simple, meaning you can do them yourself and go back to living in a cool, pleasant environment.

Other AC difficulties need the assistance of an HVAC professional. When in doubt, avoid attempting to repair major faults yourself. Simply call the experts at TDI Air Conditioning, and we'll have your unit up and going in no time.