My family and I have been dealing with PC control systems for years. We usually contact Philip or Thomas. They perform annual maintenance on our furnace and AC competently and efficiently. We count on their knowledge & expertise. They often inform us about maintenances, replacements and other issues that arise with our units. When we moved into our new house, they installed programmable thermostats for improving our home's comfort while saving energy and money. They are caring and reliable. I would recommend PC control systems without hesitation. Thank you for your years of service!