[owenfi]

Another good resource: https://homediagnosis.tv

Their youtube channel/resources focus a lot on testing/verification.

If anyone near San Jose / Santa Cruz wants to borrow a blower door and some testing tools for a few days or a week I'll make you a good deal =) -- If you want a non-professional evaluation I'd probably have a day or two of availability in the next few months as well. (I don't have duct testing tools yet, but with notice would probably get them.)