Promotional value expires 90 days after purchase. Amount paid never expires. Subject to availability. Limit 1/unit. Includes unlimited air ducts plus one dryer vent cleaning and choice of either furnace or AC inspection. Includes dryer vent (up to 10') on ground level. Additional fee may be required for excessively dirty air systems or systems that have not been cleaned in the past year. Not valid for attic or second floor furnaces. Appointment required. Limit 5 per person, may buy 3 additional as gift(s). New customers only. Merchant's standard cancellation policy applies (any fees not to exceed voucher price). 24-hour cancellation notice required. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings