Reading the McKinsey energy efficiency report again over the weekend I noted that one of the solution strategies cited (p.39 of the report) Home Performance with ENERGY STAR, the Building Performance Institutie (BPI) ,and the promotion of home performance solutions such as those of the heart of the GreenHomes approach.
They call out the need for proper sizing of HVAC equipment and duct sealing—things you’ve seen mentioned here.
The report mentions a lot of barriers. Including education, contractor capacity, and financing. But we address all of these on a daily basis. So I’m encouraged because we see it working for our customers every day—and it means it really is possible on a broader scale.