James arrived on time to tune-up our A/C. He was extremely knowledgeable and had over 20 yrs of experience. He did an outstanding job and explained many items I didn't know to look for in the A/C equipment. He put in 2 lbs of Freon as allowed by the Groupon and the system worked great. He offered great suggestions on keeping the system serviceable and explained their maintenance program. I will definitely be getting a maintenance plan from the company.