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You are here: Fantech USA | Ventilation Solutions

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Radon Mitigation

Does radon gas move through concrete?

Radon is a gas, therefore, it can move through a concrete slab and concrete may contain radium or uranium. Sealing of wall and floor cracks is never a standalone radon technique. Sealing large cracks, however, improves radon system performance and helps mitigate the most of gas thru mitigation points.

Can radon test results from a neighbor’s house be accurate indications of radon in my own home?

Unfortunately, they cannot be. A study from the National Institute of Health showed that soil composition and ground permeability are key factors affecting the level of radon in your home, and they are factors that are specific to your plot of land. And while the argument could be made that your neighbor’s house is built in the same soil and close enough to your own house to know that the ground permeability is relatively constant, differences in home construction between your home and theirs could alone account for different readings of radon. 

What are other ways to reduce radon level in homes?

Fresh Air Appliance can be used to treat radon problems when installed to increase the air rate change in the basement. These systems are installed in certain circumstances, usually when the installation of a sub-slab or a sub-membrane depressurization system is not practical. The concept is to bring in outside air into the basement thus diluting the radon concentration. The fresh air appliance takes air from the outside and brings it into the basement.

Can radon levels change over time?

Radon levels are not constant over time. Radon levels rise and fall with the seasons and weather, with changes in your home's ventilation, or changes in the ground around your home. Long term testing, 3 -12 months, will give a better average of levels over short term testing.

Do I need a radon mitigation system?

EPA recommends fixing your home if the results of one long- term test or the average of two short- term tests show radon levels of 4 pCi/L or higher. With today's technology, radon levels in most homes can be reduced to 2 pCi/L or below.

Are there other advantages of a radon system?

Yes. Depending on the type of system, moisture/humidity levels will be lowered also.

Where will the fan be located?

US guidelines state AARST/ANSI standards state the fan shall be located outside of the home, in a garage that does not have conditioned living above the garage, or in an attic with proper venting. A radon professional will suggest the best location depending on the system design, an attic location is preferred to protect and extend the life of the fan. However if the fan is installed outside, Fantech has the Slim Line model Rn2SL as an attractive option over the standard style.

Does a radon mitigation fan have to run continuously?

The general answer is yes. If you turn the radon fan off, the radon gas level may return to the pre-mitigation levels within a few hours.

How much electricity does a radon mitigation system use?

At an average rate of 12 cents per kW, an average Fantech fan can use up to $7 per month in electricity.

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