Both can perform a full assessment of your home and submit the required paperwork to the program on your behalf. Only a participating contractor can do the actual installation work. If you choose to use a rater to perform testing and job documentation for you, you can choose from among participating contractors to perform the actual installation work.
Why do I need to use a participating contractor?
A Home Energy Score Assessor is a contractor who has is a verified DOE Home Energy Score Assessor and offers a score to customers as part of their installation offering.
A 2-4 Unit Approved Installer is a contractor is approved for project installations in two- to four-unit residences.
High Performance HVAC Installer (HPHI) is a contractor who has received special training to perform HVAC installations under the Home Upgrade program.