The crawlspace is sealed. The attic has been spray foamed. The new HVAC unit has been installed. Now it’s time to have the E3 Certification team provide third-party verification and testing to ensure that the job was done right. E3’s building science experts perform a series of tests using the latest diagnostic hardware and software to give you an accurate picture of the state of your home after the upgrades have been performed. Not only does this allow you the assurance that the job was done correctly and effectively, it also serves as an added value when selling your home.