One Hour Heating & Air Conditioning TM is the nation's first heating and cooling service company to promise you on-time service or your service call is free. Not only do we make this promise, we keep it. Now that you've found us... never again will you have to wait for a Service Technician to show up. Plus, ours are friendly, clean, polite, drug-free and experienced at repairing and maintaining home heating and cooling systems. When you set an appointment with one of our Service Technicians, we guarantee he'll show up on time -- within the appointment window reserved for you -- or he'll fix it for free. Even if he's just one minute late!