Build your own Water Heater / Furnace Unit?
I know there are newer campers that have combined water heater / furnace units but they are pricey and not necessarily an easy drop in unit. It got me to thinking that it would be an interesting exper...
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You will probably need a way to keep the water heater from running in the condensing temperature range, most water heaters are not designed for extended running at low temperatures. They rely on the tank coming up to temp to burn off any condensation formed.
