$319.00 Save Time & Money. Do your Furnace & Air Conditioner yearly servicing at the same time. In the Fall & Spring the weather is right and we can check the Furnace & AC at the same time. Cullins One Hour Heating & Air Conditioning® Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply. Expires Nov 15, 2023