Learn the Effects of Humidity on HVAC Performance


High humidity levels at home are known to cause mold growth, among other problems. But did you know that humidity levels have an impact on HVAC performance, whether the weather is warm or cold?

While HVAC specialists recommend you maintain a humidity level of 60% while indoors, achieving this level can be difficult since climatic conditions keep on changing. In this article, you'll learn the effects of humidity on HVAC performance, and why your house feels humid with AC running.

Humidity and air conditioning

Are you noticing high humidity in house with air conditioning? You may notice your home not cooling off despite adjusting the thermostat. This could be due to AC humidity problems.

While your air conditioner's role is to cool and eliminate indoor moisture, high humidity levels could affect your AC's performance. This could cause your home to feel damp and warm. Not only that, your energy costs could also start creeping up.

Indicators of air conditioner humidity problems

Below are the indicators of air conditioner humidity problems:

● Have you noticed condensation forming on mirrors or windows?

● Have you noticed molds growing in certain rooms e.g. bathrooms?

● Is there damp or musty odor around your indoor space?

● Can you see wet spots on the wall or ceiling?

If you’ve encountered any of the above scenarios, you could be dealing with AC humidity problems in the house.

During winter, humidity problems can also affect how your furnace works. To know of you’re experiencing humidity issues during winter, look out for the following indicators:

● Have you noticed your skin or lips getting chapped, cracked or dry?

● Is your nose or throat dry or itchy?

● Are instances of static electricity and shock increasing?

The same humidity problems experienced during summer are also experienced during winter. They include: HVAC system overworking, lack of comfort and increased energy bills.

To avoid these problems, consider installing a dehumidifier to work alongside your HVAC system. If you’re in Atlanta, contact a HVAC specialist at Moncrief Heating & Air Conditioning to help you install your HVAC System in Atlanta.


Dehumidification is the process of using a dehumidifier to eliminate excess moisture from your home. A HVAC specialist can help you with dehumidifier installation.

A dehumidifier works alongside your AC and a good HVAC specialist should recommend one that is compatible with your HVAC system. If your HVAC system is brand new, consider adding a dehumidifier to work alongside the system. You can also consider acquiring a stand-alone dehumidifier. It enables one to manage levels of humidity manually using a manual humidity indicator.

Moncrief Heating & Air Conditioning provides HVAC Service Atlanta and has done so for over 120 years.