Promotional value expires 180 days after purchase. Amount paid never expires. Limit 2 per person, may buy 1 additional as a gift. Limit 1 per household. Limit 1 per visit. Valid only for option purchased. Appointment required. Merchant's standard cancellation policy applies (any fees not to exceed Groupon price). Valid for 1 furnace. Duct cleaning includes unlimited supply vents and 1 return vent. Valid only within 50mi of 63028. Extra fee applies for main line and additional return vents. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings