DIY blower door test – crazy?
I am having trouble finding someone willing to do a blower door test. All the firms I have contacted have said they will only do a complete Energy Audit as part of the government rebate program. I’m guessing they get a kickback from the government on top of what they charge the homeowner. So I’ve resorted to thinking up a way to test it myself. If I build a frame that fits my door opening, install a blower motor in it, power it with a variac and adjust it until the pressure differential is 50Pa, then measure the flow with a flow hood and an anemometer, how close could I get to the accuracy of a commercial unit? Is it a hare brained scheme? I already have a suitable blower motor, and access to the other items. The only work would be building the frame.