This is a very good indication that there is a leak to the outside of the home through the duct system. I think the Energy Spy Pros are on to something. We’re busy setting up the duct blaster test for us. For this, all the heating registers are taped off and a fan in the ceiling of the hallway is connected to the return air register. We are going to blow air into the duct system, and this test includes both supply and return ducts. You can learn more at ondekvinylworx.com/warning-signs-when-choosing-a-vinyl-decking-contactor/.
In order to eventually reach top speed, the fan is turned on and raised slowly. Well, that’s a good howdy, do it. The ducts appear to be so leaky that the monometer will not even start to provide a reading. This implies that the complete leakage of ducts is off the charts, both inside and outside. In these homes, I see energy savings for the future. We can run a test by combining the blower door with the duct blaster, which will separate the duct leakage to the inside from the duct leakage to the outside. Just because we didn’t get a reading of the total leakage of the duct doesn’t mean we can’t get a reading of the outside leakage of the duct. So that we can blow air into the house, the blower door fan is set on the reverse side. The duct blaster is readjusted and bingo measures 880 cfm, a measure of the duct leakage to the outside of the house. And now I can taste that clam chowder. Nathan takes down a cute pair of basketball shorts with his levies and wears them. We go down to the furnace and tape off the furnace filter to continue our quest to locate the leak, and stick it back into the furnace. We can now perform the duct blaster test again and test the leakage of only the return air ducts.