Patricia's Construction and Contracting Blog: Tips for Novices to Experts

4 Reasons Why Your Air Conditioning Is Running Too Cold

by غزل موسوی

Your air conditioning system's main job is to keep your property cool, but it can sometimes start overcooling. This can make your home less comfortable and even impact your health. Additionally, lasting damage to key parts of your air conditioning system can develop when they are allowed to experience lower temperatures than they were designed to take—in some cases, parts can even freeze over.

As such, it makes sense to have the issue checked out by a professional as soon as possible. With that in mind, here are just four common reasons why your air conditioning is running too cold.

1. Poor Air Circulation

Your air conditioning system works by taking air from outside and passing it around evaporator coils that chill the air through heat exchange. However, poor airflow can mean this doesn't happen properly, and that often leads to an air conditioner running too cold. This commonly occurs when air vents are blocked or the system's fan is faulty. You should also check the air filters since a clogged filter will impede the proper circulation of air.

2. Blocked Contactor

Your air conditioning system needs to know exactly how cool your property is if it is to maintain your desired temperature. The contactor is what makes this happen. It is the part of your system that reads interior temperatures. If it cannot get an accurate reading, it may prompt your air conditioning system to keep trying to cool the property even after the desired temperature has been reached, resulting in overcooling. If your contactor is blocked, it's probably what's causing overly low temperatures.

3. Low Refrigerant

You might assume that a lack of refrigerant would cause your air conditioning system to run too warm. However, the drop in pressure created by a lack of refrigerant actually causes your system's evaporator coils to run too cold. This will often lead to condensation forming and then freezing, which will make things even worse. Just remember to call a contractor if you suspect the refrigerant needs replacing or topping up—it can be dangerous, so it requires expert attention.

4. Faulty Thermostat

The thermostat is what you use to tell your air conditioning system what temperature to achieve, so it should come as no surprise to learn that a faulty thermostat can lead to uneven temperatures. In some cases, a faulty thermostat will cause your air conditioning system to run continuously, resulting in extremely low temperatures. 

For more info about air conditioning maintenance, contact a local company.