Claimed to be with USA Electric (which I could not find online anywhere). Said they wanted to do free inspection to save us up to 50% on energy costs and get $3800 from federal gov't. When they got to the question about credit and I told them ours was poor, suddenly he was unable to schedule an appt at any time over the next 3 weeks. Bet I won't get another call from them! Number is not reachable when tried to call back. Sounds like they are up to no good.