Mark recently did our heat/air maintenance. He did his usual, dependable, great work. He even sprayed off our other unit, which needs to be replaced soon. He is very punctual and arrived at the time scheduled..and even a bit early. He handed me his card, put on those shoe booties, and began the job. Mark is always professional, polite, and trustworthy! I'm glad he is working for you! Don't ever let him get away! He's great for your business!