24/7 Emergency AC & Heating Repair Across MarylandCall now: (855) 459-5498
☎ (855) 459-5498
☎ Call (855) 459-5498 – 24/7
Home › Blog › Why Does My Air Conditioner Freeze Up? Causes and Fixes

Why Does My Air Conditioner Freeze Up? Causes and Fixes

By Bens Air Conditioning  |  Serving all of Maryland

A frozen air conditioner in the middle of July looks like a paradox, but it's one of the most common AC repair calls in Maryland. It comes down to two causes.

Cause 1: Not enough airflow

The evaporator coil gets very cold. Warm air moving across it is what keeps it above freezing. A dirty filter, closed vents, a failing blower motor or a dirty coil starves it of air and ice forms.

Cause 2: Low refrigerant

Less refrigerant means lower pressure and a colder coil. Refrigerant doesn't get "used up," so low refrigerant always means a leak that needs to be found and repaired, not just topped off.

What to do right now

Turn the cooling off and set the fan to "on" to thaw the coil. Replace the filter. Don't run the AC until the ice is gone or you risk damaging the compressor.

How we fix it

We test airflow, inspect the coil and blower, check refrigerant pressures and find leaks with electronic detectors. See AC not cooling repair or call (855) 459-5498.

Need help now?

(855) 459-5498

24/7 AC and heating repair anywhere in Maryland

More from the blog

Services

AC or heat out? We're on call right now.

24/7 emergency air conditioning and heating repair anywhere in Maryland. No overtime fees.

☎ Call (855) 459-5498