I came up after work to meet Brian, the contractor who is doing our blower door test: In this test, a big fan pumps air out of the house at a prescribed pressure differential, and then the air flow rate is measured in cubic feet per minute, then converted to whole house air changes per hour. The maximum limit is 5.0, and we scored that. Hooray! Brian said that we'd done a pretty solid job sealing the house, especially for an owner-built house; getting extremely tight seals requires careful awareness of the sealing challenges at every stage of construction. Another thing I learned by building a house. While I was up there, I got most of the way through installing a heat pump water heater to comply with energy efficiency requirements I re-discovered when looking up the blower door test requirements. This is all a bit silly. For our application -- a house occupied infrequently -- the on-demand heater is the best efficiency tradeoff, because it has zero standby waste. Unfortunately, th...
Comments
Post a Comment