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  • Air Filtration Systems

Air Filtration Systems

The reduction of radon by air filtration systems is a relatively new approach that can be accomplished by three different methods, depending upon the type of heating or air conditioning system you presently have.

Heating or A/C SystemApproach
Central Forced AirConnect air filtration system to return duct in a manner that takes a portion of the air stream, filters it and re-injects it into the return duct.
No Central Forced Air But Space in Attic or Crawl Space can Accomodate New DuctworkInstall a stand-alone central HEPA filtration system that circulates air from the interior of the home, filters it and routes it back into the home.
No central Forced Air System and No space to Route New DuctworkInstall console unit, HEPA filter systems for each frequently occupied room.

 

HEPA Filter

Although active soil depressurization systems are more commonly used to reduce indoor radon, you may want to consider using one of the three air-filtration methods if you have allergies and indoor radon levels are relatively low. If you do, it is important to note the following:

  • HEPA systems that connect to your furnace or air conditioner or that function as whole house filt
  • After installation, your home will need to be tested for radon decay products (working level meter) to determine the effectiveness of the system.
  • Radon will not be reduced, but the more harmful radon decay products will be reduced.
  • The air filtration approach is appropriate for relatively low radon levels between 4 and 8 pCi/L.

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Radon

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Arizona Radiation Regulatory Agency
4814 S. 40th St.
Phoenix, AZ 85040
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Phone: (602) 255-4845
Fax: (602) 437-0705
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