Promotional value expires 90 days after purchase. Amount paid never expires. Valid only within 30 miles of zip code 98032. Appointment required. Air Duct includes the main duct but not return duct. Roof mounted systems are $75 extra. $18 per additional vent.Dryer Vent Cleaning valid for Wall-mounted or Roof-mounted systems Up to 2 Stories. Limit 1 per person, may buy 1 additional as gift(s). May be repurchased every 180 days. Limit 1 per visit. Limit 1 per household. Valid only for option purchased. Not valid with other offers or promotions. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings