I called Chas Roberts as they installed the 2 units on my DR Horton home. It was time for the annual work to be done. I called they quote me 293 dollars for both and said they could not get out for two months. I went on the Carrier website and looked up their authorized retailers and found a company with a 5 star rating. Shop around...check the manufacturer website for authorized dealers and get prices. The other company quoted me 59.00 each for a total of 120.00. Good luck!