Insulation R values don’t tell the whole story of household energy efficiency. Far from it. In the video below I show how two identical modern homes with the same R values, built by the same crew side-by-side, yet one uses twice as much energy as the other. Why? The facts behind this story can make a big difference to your household energy efficiency. I suspect you’ll be surprised, too.
- Video watch time = 9 1/2 minutes