It’s the stuff you can’t see in your air that makes an HVAC air purifier an attractive investment. Common household dust containing fibers, skin flakes and dirt particles are visible in the air and on surfaces. Most of these large particulates can be handled by a standard, high-quality, pleated furnace or air conditioning filter that’s changed regularly. However, the particles too small to be seen by the naked eye — or trapped by a standard filter — include airborne microorganisms like mold spores, bacteria and viruses. To give you an idea of the sizes of these particles, consider that the eye of a needle is about 1,250 microns wide. By comparison, mold spores are about 10 to 30 microns in size, bacteria are 0.03-60 microns and viruses are about 0.005 to 0.3 microns.
Efforts to eliminate these pathogens at the source are often ineffective. Controlling levels of airborne contaminants with a whole-house HVAC air purifier is a better option for most homeowners. Here are two proven technologies for clearing the air in your home:
Electronic air purification
Electronic air purifiers mount inside your HVAC ducts and utilize the power of electrostatic attraction to remove the smallest particulates. As the airflow enters the purifier, a high-voltage grid bombards the particulates with ions. Each particulate receives a positive or negative electronic charge, causing it to be naturally attracted to oppositely charged collector plates inside the filter. As the airflow passes over the collector plates, particulates are captured. In addition, with some of the more sophisticated units, the effect of negative ionization destroys the cell walls of living microorganisms like bacteria and viruses and renders them inert. A final post-filter mechanically filters the air to remove additional particulates.
HEPA (high-efficiency particulate air) filters are medical grade filters that remove 99.7 percent of airborne particulates down to a size of 0.03 microns, effectively removing most of the contaminants from the air that passes through them. HEPA filters install in a bypass loop that connects to your HVAC ducts. A blower fan incorporated in the filter draws about 60 percent of the airflow out of the ducts at all times, pulls it through the HEPA filter, then returns it to the ducts. Because the air in your home continuously circulates through your ducts, the HEPA filter constantly works to improve the air quality in your home.
P.K. Wadsworth Heating & Cooling serves Cleveland-area homeowners, helping achieve year-round comfort and healthy air quality. Ask us for more details about an HVAC air purifier to safeguard your interior environment.
Paul Wadsworth is the President and Owner of P.K. Wadsworth Heating and Cooling. For 37 years, Paul has been providing heating and cooling services to the Greater Cleveland area. P.K. Wadsworth has been a trusted Cleveland HVAC service company for 75 years. The company understand the area's construction and local heating and air conditioning needs. Paul has an MBA from the University of Michigan and a B.S., Industrial Engineering from Purdue University. He's been President of the Cleveland Air Conditioning Contractors of America and a founding member of the local chapter. Paul was born and raised in Cleveland and has been active in the local community. He resides in Cleveland, Ohio with his wife and two sons.
The opinions and statements contained in this article are for general informational purposes only and are not instructions. Only trained, licensed and experienced personnel should attempt installation/repair. The author assumes no liability for the opinions/statements made in this article. Any individual attempting a repair or installation based on this article does so at their own risk of loss.