Quick Checks
Replace or clean the filter
A clogged filter is the number one cause of weak airflow, frozen coils and high bills. Check it monthly in summer. Most 1-inch filters need replacing every one to three months; pets and dust mean sooner.
Clear around the outdoor unit
Keep at least two feet of space around the condenser. Trim plants, remove leaves, and rinse the fins gently with a garden hose from the inside out with the power off. Never use a pressure washer.
Check the condensate drain
Find the drain line where it exits the house. If it isn't dripping on hot days, or water appears near the indoor unit, the line may be clogged. Pouring a cup of white vinegar into the access port every few months helps keep it clear.
Test the thermostat
Replace the batteries once a year and confirm the system starts within a few minutes when you lower the set temperature by three degrees.
Common Causes
Dirty evaporator and condenser coils
Call ProDirt on the coils cuts cooling capacity and makes the compressor work harder. Coil cleaning is the core of every tune-up.
Weak capacitor
Call ProThe capacitor helps the compressor and fan motor start. In hot inland areas it is one of the most common parts to fail. A tune-up measures it and catches a weak one before it quits on the hottest day.
Clogged condensate drain
DIYAlgae and dust block the drain, which can shut the system off through a float switch or leak water into the ceiling or closet.
Loose or burned electrical connections
Call ProHeat and vibration loosen terminals over time. A technician tightens and inspects them with the power safely off.
Dirty mini-split indoor units
Call ProDuctless units collect dust and mold on the blower wheel and coil. They need a deeper cleaning every year or two to keep airflow and smell normal.
When to Call a Professional
- Your system hasn't been serviced in over a year.
- The air from the vents is less than about 15 to 20 degrees cooler than the air going in.
- You hear buzzing, clicking or humming from the outdoor unit.
- Water collects near the indoor unit or the drain pan is full.
- Bigger problems such as a new system, a replacement or ductwork: we will point you to a licensed specialist.
Safety Warning
Turn off power at the thermostat and the outdoor disconnect before cleaning anything. Capacitors can hold a dangerous charge even with the power off; never touch them. Refrigerant work is for certified technicians only.
Estimated Repair Cost
The AC service call is free. The technician finds the cause and gives you the exact repair price before any work starts. Nothing is done without your approval.
Frequently Asked Questions
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