How To Look At A House

McGarry and Madsen's home inspection blog for buyers of  

site-built, mobile/manfuactured and modular homes

Do radon mitigation systems require maintenance?

Sunday, June 24, 2018

Very little maintenance is required for a properly installed radon system. The part of the system most likely to fail is the exhaust fan, so it is important to make sure that it continues to function properly.

    Radon mitigation systems are required to have a warning device installed to alert a property owner of a fan failure. The most common warning device is a simple pressure gauge called a manometer, which is a U-shaped tube of liquid that displaces on one side to indicate negative pressure (suction) in the pipe. So checking the manometer monthly is the recommended maintenance routine. 


    Damage to the suction pipes is another problem that can cause the mitigation system to stop functioning properly. “We have had service calls where other tradesmen working in the attic have damaged the pipes, or a roofing contractor removed the exhaust stack and did not put it back in place,” according to Tony Davenport of Radon Professionals, a radon mitigation contractor in Jacksonville Beach, Florida. “Then again, sometimes the only thing wrong with the system is that someone accidentally turned the power off to the fan.”


     Go to our blog posts What is the operating cost of a radon mitigation system? and What is the average life expectancy of a radon mitigation system?  to learn more.

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Here’s links to a collection of our blog posts about “RADON":

What radon level is dangerous?

 Is a radon mitigation fan required to be on a dedicated circuit breaker/fuse in the electric panel?

What happens to a radon test result if the windows were opened, the test device moved, or there was any other evidence of tampering during the test? 

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?  

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? 

Will opening the windows reduce the radon level in a house?

How was it determined that between 15,000 and 22,000 lung cancer deaths each year are caused by radon?

Can a homebuyer do their own radon test for a real estate transaction with a self-test kit?

What is the danger of radon in well water?

What are the symptoms of radon poisoning? 

Does Florida have radon?

Where does radon come from? 

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 average radon level of indoor and outdoor air in America? 

• 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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