• BioSmart Technologies, LLC BBB Business Review
  • Our new Infrared Electric Blankets have arrived!
    Learn more or find them in our shop.
  • Our BioSmart® Heater saved us hundreds, maybe even thousands this year! The fuel man would take double looks at his meter every time he would fill us up!
    Randal Swob
  • ComfortZone-fan-switch-front
  • ComfortZone-fan-switch-back
  • ComfortZone-fan-switch-3-leads
  • ComfortZone-fan-switch-front
  • ComfortZone-fan-switch-back
  • ComfortZone-fan-switch-3-leads

ComfortZone R40 Fan Switch

$9.95

Clear selection

The ComfortZone portable heater with a scroll fan has 2 leads on the PCB (see pictures). The heaters with 2 DC fans have PCB’s with 3 leads.