Few things are worse than walking into a hot house on a 105°F Menifee afternoon and feeling warm air coming from your vents. An air conditioner that runs but does not cool is one of the most common calls we get during summer. Some causes are simple fixes you can check yourself. Others need professional air conditioning repair in Menifee, CA.
Quick checks you can do first
Check the thermostat. Make sure it is set to “Cool,” not “Heat” or “Fan.” Confirm the fan setting is on “Auto” rather than “On.” When the fan is set to “On,” it keeps blowing air even when the system is not cooling, which can feel warm. Replace the batteries if the screen is dim or blank.
Check the air filter. A dirty filter blocks airflow over the evaporator coil. This can cause the coil to freeze, and a frozen coil cannot cool your home. In Menifee’s dusty climate, filters clog faster than many homeowners expect, so check yours every month during summer.
Check the breaker. Your outdoor condenser often has its own breaker. If it trips, the indoor fan may keep blowing while the outdoor unit sits idle, sending room-temperature air through your vents.
Common causes that need a technician
Low refrigerant. Refrigerant does not get “used up.” If levels are low, there is a leak. A technician needs to find and seal the leak, then recharge the system to the manufacturer’s specifications. Hissing sounds or ice on the copper lines are common clues.
Dirty condenser coils. The outdoor unit releases heat from your home. When its coils are covered in dust, grass clippings or debris, the system cannot shed heat, and cooling performance drops sharply.
Failing compressor or capacitor. The compressor is the heart of your AC, and the capacitor gives it the jolt it needs to start. Intense Inland Empire heat puts extra strain on both parts. A humming outdoor unit with a fan that will not spin often points to a bad capacitor.
Leaky ductwork. Ducts that run through a hot attic can pull in superheated air through gaps and loose joints. The cool air gets warmed before it ever reaches your rooms.
Clogged condensate drain line. Many systems have a safety switch that shuts down cooling when the drain line backs up, to prevent water damage.
Prevent warm air problems
Most of these issues can be caught early with routine maintenance. A seasonal tune-up includes cleaning coils, checking refrigerant, testing electrical parts and clearing drain lines. Learn the right schedule in How Often Should You Service Your AC in Menifee, CA? or book an AC maintenance tune-up.
Warm air is also one of the 5 signs you need AC repair. If you notice others, such as strange noises or high bills, it is time to get the system checked.
Get your cool air back
If your quick checks did not fix the problem, turn the system off to prevent further damage and call Optimal Air Heating & Air Conditioning. As a local AC repair company in Menifee, CA, we diagnose the real cause and give you honest, upfront pricing. Call 951-304-3504 today.