Keeping A Healthy Home - Air Filtration

Home Inspector with Florida Healthy Home Inspections

"There is no practical means to limit exposure to pollutants outdoors. However, at least half of a 24-hour day is spent indoors, and air conditioning with high-efficiency air filtration can markedly decrease indoor exposure."

-Environmental Control Measures for Asthma Miles Weinberger, M.D.; Professor of Pediatrics Director, Pediatric Allergy and Pulmonary Division

Air Filtration

A good air filter is essential to reduce common allergens and airborne particles, reducing allergy and asthma attacks. It is estimated that Americans spend as much as 95% of their time indoors...why spend that time breathing dust mites, mold spores and pet dander? Upgrading your air filter will provide relief to everyone - even if you do not suffer from allergies or asthma. One caution, though: filters must be maintained and changed regularly to provide a benefit. Failure to change out filters could damage your air-conditioning system.

Which Filter/System is Right for Your Home?

Before spending money on an air purification system that may not meet the unique needs of your home, have an indoor air survey performed. Whether your home is less than 1 year old or over 100 years old, you most likely have an indoor air pollution concentration higher than that outdoors. The more time spent in a polluted indoor environment increases the chances of developing respiratory problems. The very young, elderly, those suffering from allergies or asthma, and the immunocompromised are at greater risk.


Filters Can:

Remove particulates from the air. The efficiency of a filter is graded using the MERV scale.

Capture viruses and bacteria

Capture mold spores

Capture dust mite fragments and fecal matter

Carbon filters can remove gasses from the air


Filters Cannot:

Kill viruses and bacteria

Kill nor rid your home of mold

Kill nor rid your home of dust mites

Rid your home of radon


Air purification is a critical component of good indoor air quality. Even the best kept home will have dust, pollen, mold spores and other allergens in the air.

A healthy indoor living environment can improve your lungs ability to rest, recuperate and heal. According to the national Jewish Medical and Research Center, allergy and asthma symptoms may improve over time if the indoor environment is properly controlled.

According to the American Lung Association, poor indoor air quality can cause or contribute to the development of chronic respiratory diseases such as asthma and can cause headaches, dry eyes, nasal congestion, nausea and fatigue.

Good air filtration, though, is only a part of the solution. For a complete solution to indoor air quality, you will need to have good ventilation, humidity controls and protect the building envelope itself. For more information, you can view the following site or contact me directly.

Hope this provides some helpful information and resource for you.  If you have any comments or questions, please share.

Jerry Andrews




Comments (3)

Lysa Napolitano
Daytona Beach, FL

Another good informative post Jerry.. it's amazing how many people don't touch the a/c filters...

Jan 10, 2007 10:35 AM
Midori Miller
Talk 2 Midori, LLC - Daytona Beach, FL
Online Marketing For Real Estate Professionals
Jerry, Thank you for the great information, keep it coming!!!  You are teaching me a thing or two.
Jan 11, 2007 03:18 AM
Roger Shugart
Environmental Promotion Associates, Inc. - Calera, AL
Jerry,  Unfortunately your awareness of maintaining a clean HVAC filter is of the minority. This is what prompted me to launch Any comments or feedback about the site would be greatly appreciated.
Jul 16, 2007 08:19 AM