Very very bad service; it cost us thousands and thousands of dollars for almost 4 years. There was a gas leak and had to call fire department. The 4th year the air conditioner not working; they changed the control panel and the part of the motor and something else. The same year the heater did not work again; then again he said the control panel is a problem. I just got fed up and called somebody else to see our unit. He said the unit was very poorly installed and the thermostat was not fixed properly making both air conditioner and heater running at the same. For almost 4 years we are paying almost double on electricity. NOT RECOMMEND THIS CONTRACTOR AT ALL