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So I got tired of Honda’s idea of a heater. My butt would sweat and on tracks snow dust would get into heater and create steam. Not to mention I I went into water more than 24” deep hoses would fill with water. After taking out all heater parts and finding almost 2 lbs of dirt in under floor tubes confirmed something else was needed. Nothing on market tripped my trigger so “build it “ came to play. Here’s what I came up with. Blows same or better cfm as Honda heater, no heat loss to tubes under floor, can be submerged and within a minute it drains out of box and easily gotten to to clean if needed. I built box used a heater core I liked that I could go to NAPA and replace if needed. A small electric radiator fan hooked up to a variable speed knob