Several factors can make your air conditioner freeze up in the summer. Unfortunately, when it happens, your system won’t cool your home adequately. You’ll also have to shut down the system until the problem is remedied. Fortunately, you can follow these tips to avoid having your HVAC freezing up in summer.
Check Your Air Filter
The most common reason behind the HVAC freezing up in summer is airflow issues resulting from a clogged air filter. A dirty filter prevents sufficient airflow through your return air duct. The evaporator coil eventually develops an ice layer if enough air doesn’t flow through it. Check your air filter regularly in the summer and replace it regularly to prevent freeze-ups.
Prevent Refrigerant Leaks
Refrigerant leaks are a common cause of ice building up on the air conditioner. The refrigerant can leak when AC parts rub against each other or joints and fittings come loose.
When your AC unit tries to run without enough refrigerant, it can make the temperatures of the evaporator coil fall below freezing. That allows water vapor to freeze on the coil surface. The best way to prevent potential refrigerant leaks is to have a qualified HVAC technician service your unit periodically.
Check the Drain Line
Your air conditioner dehumidifies your home’s air as it cools it. The moisture that condenses out of the air flows outside through the condensate drain line. If the system becomes clogged, the water in your condensate drip tray can back up and overflow. The excess moisture can make your evaporator coil freeze over.
Check your drain line, and if you notice blockages, dislodge the debris using a wet/dry shop vacuum to ward off your HVAC freezing up in summer.
Check All Your Vents
Blocked return air grilles and too many closed supply registers can cause airflow problems that make your air conditioner freeze up. Check all your return grilles and supply registers to ensure they’re open and not obstructed by items like furniture.
Regular maintenance significantly helps you avoid the inconvenience caused by having your HVAC freezing up in summer. If you need AC maintenance or repairs in the Dayton area, contact Detmer and Sons for professional and timely services.