• BioSmart Technologies, LLC BBB Business Review
  • 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
  • Fan-Switch-R40-Front-with-Highlight.jpg

ComfortZone R40 Fan Switch


The ComfortZone portable heaters with scrolls fans use the simple switch. The heaters with DC fans need the switch with the PCB. There are 2 types of the switches for the DC fan. It’s easier to install if you pick the one that matches your unit, but they are interchangeable