A & J Energy Consultants

This is a short note to congratulate you on your excellent construction practices which are reflected in your outstanding air-test results. Your results have ranged from 0.81 Air-Changes- Per-Hour (ACH) to 0.34 ACH. To put this in perspective, the minimum ENERGY STAR requirement is 2.5 ACH for a detached home and the R-2000 minimum standard is 1.5 ACH.

See full recommendation here