DIY Pressure Testing for Rain Leaks
I have an impossible to find leak in my travel trailer and I am at my wits end. My trailer is a 40 ft. Park model on a permanent campsite in southern Delaware with a hard room and deck attached so I d...
Forum Discussion
j-d wrote:
An appropriate rental blower, ventilator, carpet drier should work. Not sure the Harbor Fright knockoffs are adequate though. Oddly a pressure door uses a fan that looks like a Fantastic Vent except 120VAC.
Last night I realized I DO have a 120VAC 2-speed 1/3-hp blower motor. It's out of a Coleman Rooftop RV A/C that was rated 320-cfm. I'm not sure it's enough to build something around and I don't have the blower part, not even the squirrel cage.
j-d - There is an easy way to test a blower to see if it can possibly create enough pressure rise to do a leak test. The no-flow condition corresponds to the highest pressure output of a blower. Tape a piece of cardboard over the blower outlet, make a small hole in the cardboard and insert one end of a water U-tube manometer into the hole. If the blower isn't capable of producing 1 inch of water pressure or higher under that condition, there is no hope of sufficient pressure when it is actually pumping a volume of air into the RV.
