This is the 2nd time we had Drake look at our furnace 1st time he got it running after never working on this furnace before and now the 2nd time we had him do a service and cleaning and he knew what he was doing and what needed done to it. I feel completely confident in his work and feel so much better knowing he has my furnace working in top condition. We will continue to have Drake work on our furnace every year so that we have peace of mind.