Things to Do When an Air Conditioner Freezes

September 28, 2017


Having regular maintenance performed on your HVAC system will save you money in the long run.

st louis ac maintenance

Whenever you notice any signs of frost or ice in your air conditioner, or find that the unit is not performing properly, take immediate action. It is important to nip it in the bud otherwise it may damage the walls, floors and ceilings. If the issue is ignored for too long it may lead to compressor failure. You may have to pay for expensive repairs or buy a new one. Here are some helpful tips on dealing with this type of an issue.

Common Reasons Why Air Conditioners Freeze

Diminished Airflow – This can happen due to a clogged filter or a broken fan. If the fan runs sluggishly or does not turn on, the unit may freeze because when the fan does not work properly sufficient air does not flow over the coils and they become excessively cold.

Obstructed Drain Line – There may be some obstruction in the drain line.

Refrigerant Leak – The chemical which runs in the AC coil and changes the pressure and temperature to remove heat is known as the refrigerant. If there is a leak, the pressure may be reduced and may cause freezing. Actually, the AC does not consume refrigerant and there is no need to add it unless there is a leak. So if you have to add refrigerant every year it implies that there is a leak which needs to be fixed.

Faulty Thermostat – If you notice that the AC runs constantly even when the temperature is not very high there are chances that the thermostat is not functioning properly. The coils of an AC which runs constantly become too cold due to which the unit freezes. In such cases, the thermostat should be recalibrated or replaced.

St. Louis AC Repair

For more than 35 years, Scott-Lee Heating has been serving the greater St. Louis metropolitan area. Whether you need to repair or replace your furnace or air conditioning system, you can count on Scott-Lee Heating Company to be there when you need us, charge you a fair and honest price, and stand behind our work 100%.

Call us today at (314) 200-0788 or fill out our online contact form.