A salesman from Green Planet came to my selling furnace did not need one but the furnace was old. He explained my bill would only go up to $50 if I bought the furnace. Did not explain the contract. Now I am stuck with a heating bill of almost $200 more in paying for this furnace and air can for 15 years. I did sign the contract under what the sales man told me I phoned the company and are no help. DO NOT BUY FROM THIS COMPANY .