5 Effective Ways To Prevent An AC Coil Freeze Up

Nothing sounds more refreshing as ice on a hot, humid day – except if that ice is in your AC unit. Frozen coils do the opposite of keeping your building cool, it will leave you and your business in the heat.

Even though frozen AC coils is a common malfunction, you don’t have to let it happen to you. By focusing on preventative measures, you can keep the cold air flowing and avoid the hassle of repairs.

Let’s look at 5 effective ways to prevent an AC coil freeze up.

1. Change the Air Filter Monthly

An AC unit needs clean air to flow through to work properly. If a dirty filter blocks this, there won’t be enough heated circulation flowing around the coils to keep condensation from freezing up. With no circulation, the coils get too cold.

Clean or change out the filter monthly to make sure enough air is flowing through your system. It’s also a good idea to inspect the air vents in your business, ensuring none of the grates or ducts get blocked.

2. Inspect the Condensate Drain

Your commercial AC unit has condensate lines that allow excess moisture to drain away from the system. If this line gets clogged, the water has nowhere to go, will back up, and cause an AC coil freeze up.

Check and clean out the drainpipe weekly, especially during the hottest parts of the summer. Make sure you see water dripping into the condensate pan and it flows out through the drain.

3. Have Refrigerant Levels Checked

Your AC unit relies on refrigerant to flow through the coils and regulate the temperature and pressure. If there’s a refrigerant leak or the levels get too low, it will cause the evaporator coil to get too cold and freeze.

Regularly check refrigerant levels, but don’t try to do this or fix a leak yourself. An HVAC professional will know how to keep track of the chemical and clean it up, if needed.

4. Keep Your Thermostat in Working Order

Another easy way to prevent an AC coil freeze up is to make sure your thermostat is working the way it should.

A malfunctioning thermostat will sense the wrong temperature in your building, causing the AC unit to work overtime. This wears out your system and creates frozen coils.

One way of telling if your thermostat isn’t working right is if you’re having trouble keeping your business a steady temperature. Or you might notice the AC is running too cold.

5. Have the Fan Speed Increased

Since we know clean air is essential to keep an AC unit working, it’s also important to make sure a fan is pushing it through the system. Even if your air filters are clean, it doesn’t help if the fan isn’t blowing air in hard enough.

First, make sure the motor isn’t broken and the fan blades are clean. Then, have a professional come out to increase the fan’s speed. Keeping enough air moving through the AC unit will prevent coils from freezing over.

Keep Your System Working by Preventing AC Coil Freeze up

Don’t let frozen AC coils leave your business hot around the collar. By using these preventative tips, you will keep your system running and prevent an AC coil freeze up.

Need help keeping your commercial AC system running smoothly? Contact us today and let McNamara Custom Services put our years of experience to work for you!

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