Why is My Air Conditioner Freezing Up?

Tori Klein • July 28, 2022

5 Common Reasons Why Your HVAC is Freeing Up

Picture of a man removing a ceiling vent.

Finally, summer is upon us once again. Although this season brings lots of fun in the sun for you and your family, the heat in your home might be unbearable. Your HVAC plays a vital role in ensuring that you're comfortable and cool in your home. But what happens if your air conditioner freezes and ice forms on it?


If your HVAC system looks like it has just returned from exploring Antarctica, there's trouble.


So, why is your HVAC unit literally frozen?


1. Clogged Air Filter

A dirty or clogged air filter can cause your HVAC to freeze. Dirt and dust can build up in your air filter and prevent proper air circulation if not cleaned regularly.


The Cure:

Check your air filters monthly. If you see dust beginning to form, give it a good clean. We recommend thoroughly cleaning or changing your filters every 3 months. This is also a great way to save money on your HVAC costs.


2. Reduced Refrigerant

Another reason for your HVAC freezing is low cooling agent levels.


The Cure:

Call your Best Owner Direct HVAC specialist to make an evaluation. If you do suspect a leakage, switch off your HVAC right now.


3. Drain Issues

The primary drainage issues are:

  • Dirt causing a clog
  • The drainpipe line is loose.


A blockage stops water from flowing freely and leads to dirt buildup which can eventually trigger the HVAC unit to freeze.


The Cure:

On wet or humid days, check on your drain pipelines. You should see water traveling with the drain system.


If you're experiencing a clogged-up drainage pipeline, contact us to make an analysis.


4. Thermostat Degrees

Blasting your air conditioner at a very low temperature for long hours can also cause your HVAC unit to form ice.


The Cure:

Avoid overusing or running your HVAC overnight. Only set your thermostat at low degrees during heat waves or excessively humid days.


At the end of the day, the more you use your HVAC, the most likely you are to encounter problems in the future.


Are you experiencing problems with your thermostat? Best Owner Direct HVAC thermostat installation procedure is the solution you need.


5. Fan Breakdown

A malfunctioning fan can also lead to a frozen HVAC.


You know your fan isn't working properly when it's not moving, moving slower than usual, or producing rattling noises.


When the fan's not functioning effectively, condensation will develop gradually which eventually freezes to form ice.

The Cure:

If your fan is damaged, we can fix that for you.


When it comes to your HVAC, you need to have a sense of urgency. As soon as you see the ice forming, get in touch with a specialist.


The best way to get to the bottom of your air conditioning unit problem is by contacting Best Owner Direct HVAC to book a solution visit.


Get a Free Quote Today!

Fill out the form below and we'll get back to you as soon as we can!

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Best Owner Direct is your local, independent, family-owned and operated, residential and commercial HVAC service, repair and installation team. We're a trade ally of the Energy Trust of Oregon and our certified professionals offer services for all major brands. With over 20 years of experience, our team can handle all of your HVAC needs.


Free estimates available for installations. Contact us today to learn more or to schedule an appointment!

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