How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
What is the average radon level of indoor and outdoor air in America?
Monday, June 25, 2018
The average radon level of residential indoor air is 1.3 picocuries per liter of air (pCi/L), and outdoor air averages 0.4 pCi/L, based on a national radon survey completed in 1991. The EPA recommends mitigation (fixing it) when indoor air level is at 4.0 pCi/L or more.
Also, see our blog post How was it determined that between 15,000 and 22,000 lung cancer deaths each year are caused by radon?
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Here’s links to a collection of our blog posts about “RADON":
• Can a radon test result be wrong?
• Where do I find the Florida laws regarding radon?
• Can I test vacant land for radon before building a house?
• Is radon mitigation possible for a condominium?
• Do radon mitigation systems require maintenance?
• What is the average life expectancy of a radon mitigation system?
• Do older houses have higher radon levels than new houses?
• Can the seller tamper with a homebuyer's radon test to change the results?
• How long does it take to get the results of a radon test?
• For how many years does an old radon test result remain valid?
• Should homeowners get a pre-listing radon test before selling their home?
• What are a homebuyer's options when the radon test comes back high (4.0 pico-curies/liter or more)?
• Do granite countertops emit radon?
• How can I tell if a house has a radon mitigation system?
• Can a mobile/manufactured home have a high radon problem?
• Do I need to test for radon when buying a condominium?
• What does a radon mitigation contractor do to lower the radon level in a home?
• How can not testing for radon be an expensive mistake for homebuyers?
• Will the radon test come back sky-high in a house that has been empty and closed-up for months?
• What is radon? Should I be concerned about it?
• Should I buy a house with a high radon level?
• What is the operating cost of a radon mitigation system?
• Should I buy a house with a radon mitigation system?
• Does the buyer or seller of a home pay for radon mitigation when the radon test comes back high?
• What is the probability of having high radon in a Florida house?
• How quickly do I need to reduce a high radon level in my house?
• Does a home inspector check for radon?
• What are the problems with underground return air ducts?
• What is the probability of having high radon in a Florida house?
• What factors can change radon test levels up or down?
Visit our RADON page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
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