This coupon entitles a homeowner to a $85.00 Tune-Up performed by NEO Air Docs Heating & Cooling at their residence. Discount is limited to a maximum of $20.00. Only one (1) coupon per service address will be accepted. Coupons are not valid for commercial or rental properties. Coupon must be presented at the time of service. Payments for the balance is expected at the time of service.