Exterior Fan Installation

  • Radon mitigation fans installed on the exterior of buildings must be hard-wired into an electrical circuit. 
  • Electrical disconnects shall be installed within line of sight and within 4 feet of the fan. 
  • Exteriorly, plugged fans must used only inside of weather-proofed fan housings or weather-proofed chases.
  • An electrical disconnect switch or circuit breaker shall be installed in radon mitigation system fan circuits to permit deactivation of the fan for maintenance or repair. 
  • Disconnect switches are not required with plugged fans.
  • 32 ILAC 422.150(h)(10)