Lukasz did an excellent job on our Mass Save home energy audit. He is a thorough professional and arrived on the dot for the appointment. As he was doing his job, I picked his brain over problems and potential projects in our home. He answered questions clearly and didn’t shy away from saying “I don’t know” when necessary. His knowledge and experience showed in his work as well. All-in-all, exudes confidence and trustworthiness. I’d have no hesitation in recommending Lukasz and American Installations.