I called to have a service done on my furnace last month. The person who answered the phone was kind enough to give me an estimate of what it was going to cost. I wanted to have the money available when the HVAC technician got there. My husband went to the bank on his way home, so we had the money in the morning. Once the HVAC technician arrived, he went directly to work on the furnace. When he started going over the bill, I saw they wrote that there was no charge. I wanted to know why there was no charge for the service and maintenance. He told me the maintenance agreement covered the cost. I didn’t sign up for the maintenance agreement, and I was insisting on paying. He called the HVAC company and told them what was going on. He gave them the address and our names. We then had to wait about twenty minutes for the HVAC receptionist to call back. In the meantime, I told him the furnace was in the house when we moved here. We were told the HVAC system was brand new and the only way to keep the warranty from being canceled was to have the maintenance done. We had kept with that for the last two years. When the secretary called back, she said the original owners of the HVAC system had bought the maintenance agreement and an extended warranty when they bought the equipment. We still had another year of the maintenance agreement before it had to be renewed again.