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2 HVAC Appliances That Can Prevent Mold Growth


The temperature change that takes place as the warm air of your home passes over the frigid evaporator coil inside your air conditioner often leads to the formation of condensation. As the air becomes chilled, water vapor turns from a gaseous to a liquid state, often accumulating on the outside of the evaporator coil.

Within certain limits, such condensation doesn't pose any huge problems. Yet excessive condensation can create moisture problems inside your system - often leading to the proliferation of mold, which can lead to a wide range of health ailments.

Fortunately, many different strategies exist for keeping mold out of your air conditioner system. While regular maintenance always helps, sometimes more intensive measures are required to eliminate mold. This article takes a closer look at two HVAC appliances that can help to keep mold at bay.

1. Whole-House Dehumidifier

The amount of condensation that accumulates on and around your evaporator coil stands in direct relation to the relative humidity of your air. The more humid your indoor conditions, the more likely you are to suffer from mold and mildew growth. Ideally, your home should maintain a humidity level of between 30 and 50 percent.

As humidity levels creep above 60 percent, mold problems quickly ensue as more condensate forms inside your system. Yet high humidity can also lead to water accumulating in lots of other places as well. The cold air coming out of your ducts may even cause condensation to form on walls and furniture.

To combat especially humid conditions, many people buy in-room dehumidifiers. Yet these stand-alone appliances do little to combat humidity problems elsewhere in your home - let alone inside of your ducts and air conditioner components. A more effective solution is to invest in the appliance known as a whole-house dehumidifier.

A whole house dehumidifier has the ability to regulate humidity levels for your entire home, not to mention within your HVAC system. These highly efficient appliances often attach directly to your duct system, ensuring that all of the air moving through your HVAC system receives dehumidification.

Manufacturers rank whole-house dehumidifiers according to the number of square feet they can effectively manage. Be sure to select a unit with a rating appropriate to the size of your house. Otherwise, you may not end up with the results you desire.

2. UV Light Purifiers

Whole-house dehumidifiers control mold growth by limiting humidity. Yet in some cases, mold may still find a way to infiltrate your home's air. UV light purification systems offer even more help. UV light purification destroys any and all mold spores in your air, regardless of humidity levels. In fact, UV light can destroy any living organisms, including bacteria and mildew as well.

In a UV light purification system, air passing through your ducts is routed past one or more ultraviolet bulbs. UV light destroys mold and other microorganisms by passing through their cell walls and disrupting their DNA. UV purification systems can prevent mold growth regardless of the conditions elsewhere in your system.

Be aware, however, that UV light won't do anything to reduce other common irritants such as pollen, dust, and pet dander. For that reason, UV purification systems often incorporate special HEPA filters, which can effectively remove 98 percent of airborne contaminants. As a result, UV light purification systems offer the cleanest possible air for those prone to allergies.

Whether you decide to invest in either of these systems, you must do everything you can to keep mold from compromising your indoor air quality. For more information about how best to do this, please contact the HVAC experts at MegaAirConditioning, Heating & Electrical.


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