Furnace Tune-Up Now $89. Regular price $119! One Hour Heating & Air Conditioning® of Cincinnati Excludes oil furnaces. Oil furnace tune-ups are $169.00. Breakdown-Free Guarantee valid for 6 months from date of service. Price per system. Valid at participating locations. Limit one coupon per household. Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Some restrictions, fees and taxes may apply. Expires Nov 30, 2020