CMI Construction is considered the leader in the Metro East when it comes to energy efficiency. Many CMI homes are Energy Star Certified. CMI Homes are independently rated by Greener Visions and given a HERS Rating. Homes go through a blower door test which gauges the efficiency of air changes per hour “ACH.” CMI Homes vary from 0.74 – 2.0 with an average of 1.5 ACH when tested. Code requires a 5.0 ACH or less. CMI Construction goes above and beyond to achieve the best ACH rating on every home that we build to ensure the highest quality home possible. CMI homes will have substantially lower heating and cooling costs because of our outstanding low ACH ratings.