Try These 5 A/C Troubleshooting Tips Before Calling an HVAC Technician

April 8, 2015

Our hot Texas summers mean the air conditioner needs to be in top form throughout the long cooling season, otherwise you may be in for some uncomfortable breakdowns. What’s more, days without an A/C can wreak havoc on your home’s sensitive computerized systems. Brush up on these A/C troubleshooting tips before summer arrives in force.

Air Isn’t Cool

If the air is blowing but it’s not cool, there may be a refrigerant leak. While a trained technician will have to charge the system, check out these other options before you call.

Check the air filter. If it’s dirty, change it, as dirt blocks airflow.
Clear obstructions away from the outdoor compressor.
Make sure the outdoor fan is working. If not, call a repair professional.

Air Isn’t Blowing

First, check the thermostat temperature to make sure it’s set a few degrees lower than the room temperature. You should also check the following:

The thermostat should be set on “cool.”
A dirty air filter may block airflow. Change it.
Make sure there’s power to the A/C by checking the switches to the outdoor compressor and the indoor air handler. Also check fuses and circuit breakers.

The A/C Is Cycling On and Off or Running Continuously

The most obvious explanation to either of these problems is that the A/C is wrongly sized. Consult a technician to see if adjustments can be made for better performance. Otherwise, do the following:

Make sure an air register isn’t blowing directly on the thermostat.
Change the air filter.
Have the refrigerant checked.

Condensate Line Is Obstructed

Condensate lines can become obstructed from insect nests or mold. Before calling in a pro, blow compressed air into the line to dislodge any obstructions, and pour a solution of half-bleach and half-water through to get rid of mold.

The Air Conditioner Is Freezing Up

A dirty air filter can cause a system to freeze up because it impedes airflow. Other causes may be dirty coils, a broken air handler fan, obstructed vents or a low refrigerant charge.

Learn more A/C troubleshooting tips and cooling solutions from the pros at Davis Heating & Air Conditioning, or contact us at 888-710-5530 to schedule an appointment for your greater Houston home.

Image via Shutterstock.com