Radon Fan In Attic

After documenting the temp and rh in both the house and crawl space i have discovered the radon fan is somehow bringing humidity outdoor air into the building envelope.

Radon fan in attic. The radon system is hidden. The purpose of a radon fan is to draw radon from out of the soil below the home and release it safety above the house. Radon fans are better protected from the elements. In retrofit situations the attic installed system is usually installed through a garage with the radon vent fan in the garage attic.

The air flowing through the fan will maintain the fan temperature. Electrical components are out of reach. I have never found a radon fan more than a bit warm even if the motor has been stalled by some blockage so there appears to be no concern about causing a fire from the fan overheating. When a radon system is installed in the attic space the fan and all electrical components are also located in the attic.

If the radon fan is located in the attic of the house or garage you can wrap the fan with fiberglass insulation. First and foremost rather than having the fan and venting pipes on the outside of the home an interior system means that the only visible component on the outside is the vent stack that rises through the roof. A garage attic installation runs pvc piping from the sub slab radon collection point created in the slab through the garage where a radon mitigation fan has been installed. Radon fans and electrical components are out.

Attic installed radon mitigation systems offer the benefit of hidden system components while protecting the radon fan from the elements. Instead of having the fan and venting pipes on the outside of the home the only visible component on the outside is the vent stack that rises through the roof. If you have a radon level of around 4pci l the level of radon being pushed out of the exhaust side of the fan can be many times higher even into the 100s of pci l. Benefits of a radon mitigation system installed in the attic the radon system is hidden.

Radon fans inside attic spaces are better protected from the freeze and thaw cycle. Garage attic sub slab depressurization systems are installed in homes or businesses with slab flooring. Radon fan i e an active system or an electrical receptacle installed in an accessible attic location near the radon vent pipe i e a passive system to facilitate future fan installation if needed. Thanks everyone on the feedback concerning humidity and attic insulation.

Attic installed radon mitigation systems. I have discovered the problem. Radon systems create condensation within the suction and exhaust pipes.