Written by: Kate Holder

Category: Radon Mitigation

Published: February 10, 2023

During Fan Replacement or installation appointment important to remember:

1. Positively pressurized ASD duct piping or other positively pressurized components of an ASD system shall not be installed in or pass through or pass under the conditioned space of the building. If you current system does not adhere to EPA mitigation guidance and ANSI/ AARST standards for the fan location Alfa Air Agency radon Contractors can perform any changes or repairs your radon system needs. We can move the system, re-pipe it, add suction points for a new addition, or bring it up to current standards. Small repairs are at time and materials charges, with jobs over three hours usually bid, so you know your costs.

2. Eventually, the radon fan will need replacement, but sometimes it is just a tripped GFCI, which we can verify and help you solve over the phone for free. Call us 240-224-0577 for fan replacement pricing.

3. Fan chosen to be mounted on the exterior of the buildings shall be rated for outdoor use or installed in a weatherproof protective housing that results in a code compliant configuration with protection against electrical shock.

4. RADON fab SHALL NOT be installed in the heated/cooled or otherwise occupiable space of a building

5.RADON fan SHALL NOT be installed in nay location directly beneath the conditioned or otherwise occupiable space of a building, such as a fan installation within a basement , crawl space or enclosed garage beneath occupiable space.

6. Radin fan can be installed in attic, on the exterior of building, or garage that are not beneath conditioned or occupiable space.

7. Radon fan SHALL NOT be installed below ground.

8. Radon Fan SHALL BE sized to provide the pressure difference and airflow capacity necessary to achieve the mitigation goals.

9. Radon Fan shall be installed in a configuration that avoids condensation buildup in the fan housing. Radon fan shall be installed on vertical runs of ASD piping.

10. Radon fan shall be mounted to piping using flexible couplings that comply with ASTM D5926 or ASTM C1173

11. Install manometer bellow the fan to ensure the system has monitoring mechanism to directly indicate if fan is operating withing the established operating range.

12. Components that require electricity for indication of system failure shall not be powered by the same branch circuit as mitigation system RADON FAN.

13. RADON FAN must have electrical disconnect switch within 6 feet!!!!