Blog

What Grade Does Your Insulation Belong In?

In the US, there’s a requirement for HERS raters to determine if batt insulation has been installed properly. There are three ‘grades’ of batt inst...

New ANSI Standard for Blower Door Testing in the US

Mark Butler posted this article by Rick Karg (Residential Energy Dynamics) in the RESNET group on LinkedIn -- I thought it might be helpful to spre...

Proper installation technique for proper batt insulation

Oh, how I yearn for RESNET Grade I installations...here's how to get 'em.

Drainwater Heat Recovery Units & Water Efficiency

Hot water distribution efficiency is now included in HERS ratings, under an amendment to ANSI/RESNET Standard 301-2014. This is a Good Thing. To da...