This project has gone outer limits you guys!!! We have been trying to come up with a way to heat our pumps to save on diaphragm life during the winter months. For remote locations as well. -20F makes for brutal conditions for any rubber, especially with high cycle rates.

FWIW -We never tested this last winter but we did prototype one. Simply used a pilot light burner like on any water heater. Put the flame inside of a 3" stack. Ran the stack through the compressor box, out the top. Wrapped the stack with 1/4" woven wire and rocks against the stack. Small intake hole to the outside for make up air. No flame in the compressor box as moisture would be a real problem. Indirect heating of the air. Never did the calculation but I would bet a 20lb LP tank would have lasted the winter.

Last edited by mnfish; 04/16/15 11:01 PM.