Furnaces. Very inefficient!
Seems to me that the furnaces in rv's are patheticly inefficient. There are natural gas house furnaces that are so good that the exhausts are plastic!
Forum Discussion
One RV designer working for the manufacturer. Sitting behind him are four cheapskates with adding machines. Prime Directive. "Make It Cheap! Make It Pretty! Make It Cheaper!"
One can of aerosol foam insulation may turn out to be the best money you've spent in a long, long, time. I spent four hours insulating behind the absorbsion tubing on the last Norcrap refrigerator. It and an inch of rigid foam board everywhere else reduced interior temps from the high fifties at max cold setting to the high forties at "7". Problem turned out that Mexico summer temperatures allowed food to spoil. Something that has not happened for eight years using a freon unit.
But for sealing up cracks, holes, and unintentional wind tunnels, foam is unbeatable.
One can of aerosol foam insulation may turn out to be the best money you've spent in a long, long, time. I spent four hours insulating behind the absorbsion tubing on the last Norcrap refrigerator. It and an inch of rigid foam board everywhere else reduced interior temps from the high fifties at max cold setting to the high forties at "7". Problem turned out that Mexico summer temperatures allowed food to spoil. Something that has not happened for eight years using a freon unit.
But for sealing up cracks, holes, and unintentional wind tunnels, foam is unbeatable.
