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In November 2011, the California Energy Commission conducted a public workshop to present proposed revisions to the building code—namely eliminating the option of non-powered flow hood devices.
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A very common complaint about duct testing is that the covers get blown off the registers.
Most code language leaves the choice of pressurizing or depressurizing up to the tester, but experience has shown that the positive pressure made sealing registers much more difficult, and could triple the time to perform a test.
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The Retrotec team joined almost 50,000 participants in this year’s Vancouver Sun Run on Sunday, April 15th. The 10km race provided a chance for our staff to join the community and reach their goals including:
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Why do we have some States that are so opposed to adopting energy efficient codes and others that manage to voluntarily sign up for Stretch codes, which have more stringent requirements?
When I started Retrotec 30 years ago, I thought tools that could increase the efficiency of a home were a no brainer.
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Even though blower door and duct testing has been around since the '80s, there's still the occasional question about the necessity of blower door testing versus just going through with a visual inspection...
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What does it take to earn the Guinness World Record for the largest building ever blower door tested? 16 Fans, a 37 million cubic foot (1,000,000 m3) building to test, and a 360 Mile (600 km) drive...
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Over 300 buildings from large to enormous have been tested over the past three years, yielding an average of 0.17 CFM/square foot of enclosure. This is a vast improvement of the national average for untested buildings, which is from 0.6 to 3.0 depending on location and type. However, large building air leakage testing techniques have already evolved rapidly. It came to the surprise of a few that, from an equipment perspective, we can test virtually any building’s total exterior enclosure leakage.
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Never blow a main breaker again!
Easily daisy chain multiple fans together.
More user-friendly features... learn more
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Air leakage testing doesn’t have to be complicated. We’re on the road again, training auditors how to test ducts and houses with the new DU200 DucTester and 1000 Blower door.
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The @25 Pa feature on your gauge is one great way to get accurate total duct leakage results. Heck, by using that feature, you can get the ducts up to anywhere between 15 and 30 Pa and you still get the same result as you’d get by fiddling with the control to get exactly 25 Pa. Anything that speeds up the test and retains accuracy is good. Right!
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