Start with the basics. Thermostat settings are one of the most common causes of cooling issues.
Make sure:
•The thermostat is set to “Cool”, not “Heat” or “Auto”
•The temperature is set below the current room temperature
•Batteries are fresh if your thermostat uses them
If the screen is blank or unresponsive, the thermostat may not be communicating with your system.
A dirty or clogged air filter can severely restrict airflow, preventing your system from cooling properly.
Check your filter for:
•Heavy dust buildup
•Discoloration or debris
•A replacement date that’s overdue
If it looks dirty, replace it and allow the system some time to recover. Improved airflow can restore cooling in many cases.
Your AC system relies on electrical power to operate. Sometimes, a tripped breaker is the culprit.
What to do:
•Locate your electrical panel
•Look for a tripped breaker labeled HVAC, AC, or air handler
•Reset it once and monitor the system
If the breaker trips again, stop and call a professional — repeated tripping can indicate a serious electrical issue.
If airflow is restricted or refrigerant levels are low, your system’s evaporator coil can freeze.
How could a coil freeze if it’s so hot outside? The refrigerant itself may be leaking out, causing ice, and of course, low refrigerant.
If it seems like these signs line up, you should:
- Turn the system off
- Switch the fan to “On”
- Allow the ice to fully melt before restarting
If freezing happens again, professional service is needed.
If these steps don’t restore cold air — or if you notice unusual noises, smells, or repeated issues — it’s time to call an HVAC technician.
You should contact a professional if:
•The AC runs but never cools
•Breakers continue to trip
•Ice keeps forming on the system
•The unit shuts off unexpectedly
Ignoring these signs can lead to more extensive damage and higher repair costs.
If your AC still isn’t cooling after troubleshooting, Shuff’s AC & Heating is ready to help. Our experienced technicians provide fast, reliable service to diagnose and repair cooling issues safely and efficiently.
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Don’t let a minor issue turn into a major breakdown. Contact Shuff’s AC & Heating today for professional AC repair, maintenance, or emergency service — available when you need it most.
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