Brian and Nick first performed a whole house energy audit, looking at everything from insulation levels, furnace efficiency and air quality and safety. The options were presented in a good, better, best fashion in order of most bang for the buck. We opted for Option #2 which offered some efficiency gains as well as addressing some of our comfort issues. The work involved a crew onsite for a couple of days applying spray insulation and minor duct work. Very professional crew, arrived on time and finished ahead of schedule. After the work was performed, Nick returned to validate (using the blower door test) that the improvements provided the expected efficiency gains. They also handled processing our Consumers Energy rebates. Very good experience!