"Could you have them make a simple two line graph of the outside temperature, noting sun/clouds,…"
Before and after leakage tests. What to expect.
Your before-test result is 4000 CFM50. After two days of work, you measure a 21% reduction to 3150 CFM 50. Your after-test is checked using another blower door and they only get a 4% reduction to 3850 CFM50! What gives?
Retrotec CEO, Colin Genges gives his monthly Rants and Raves, see article below:
http://retrotec.com/RetrotecBlog/tabid/540/post/colin-rants-before-...
Views: 220
Replies to This Discussion
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Permalink Reply by William H Nickerson on -
Good job putting up this post.It puts a better view on accurcy.I watched a video of a guy who had some serious time in this field and he says we should do 10 individual single point tests -EVERY TIME?.I think this puts that in perspective.
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Permalink Reply by Silvie Votrubova on -
Appreciate the feedback William. The piece comes from our newsletter, if you're not on the list and want to get on, just let me know. Thanks.
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