Quote:
quote:Originally posted by Cat320
As Rich noted, these things are not really built for cold weather. There are plenty of leaks for the outside air to enter the rig. On our last trip out west (it got in the teens), I put a piece of rug partially covering the front of the 'air return' to block part of that cold air, figuring there were enough holes to let plenty of air 'return.'
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I agree that the heating ability of an RV furnace has it's limitations but for heat to get into an area then air must have a way out and I believe the grill under the stairs is where the majority of the living area's air is returned. If you restrict the cool air return, then you can cut down on your air flow into the living area.
I put a little air filter behind my grill and I change it often when I use the furnace a lot.
My Dad had an oil Furnace business when I was a boy and I helped him. He pretty well converted the whole town from coal to oil back in the late 1950's. No natural gas in the part of Manitoba where we lived.