• BioSmart Technologies, LLC BBB Business Review
  • Our two BioSmart® Heaters have proven to be a large help in cutting heating costs here in South Missouri. These two heaters have never given us any trouble, which we can’t say about other brands.
    Morrison Lumber & Hardware - West Plains, MISSOURI
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  • Fan-Switch-R40-Front-with-Highlight.jpg

ComfortZone R40 Fan Switch

$14.95

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