We have a maintenance contract (renewed for several years) with Samm's for our A/C and heating systems. The people that come out to do the maintenance are very professional and courteous. They are always aware of keeping our home clean and put covers on their shoes when they enter. Additionally, they have always been on time. I can't say enough good things about this company and it's employees. I would recommend Samm's to anyone with a/c and heating issues.