First United Methodist Church has been a customer of Scott Systems for over 18 years (that was as far back as my computer software goes.) They oversee the main church's 18 HVAC units, three units at our two parsonages, and several units at staff member's homes. They promptly take care of our emergency situations, as well as the regular service maintenance of our units such as checking/replacing belts and changing air filters. They are very courteous and accommodating to our schedule. They are very trustworthy and we don't hesitate to give them a door key and security code to be able to take care of things after hours.