I have been dissatisfied with the former AC/Heating and Plumbing company I used. Felt like they were more interested in trying to sell me something. I found Tim on Yelp and had him come out to service my rooftop unit. He was prompt, efficient and reasonably priced. He did something no other company has ever done with a meter he checked the ducts inside to make sure there wasn't any carbon monoxide coming into the house from the unit. I believe I found my new AC service.