Promotional value expires 120 days after purchase. Amount paid never expires. Valid only within 25 miles of zip code 75050. Appointment required. Includes both main and return ducts. Service is for cleaning dust, removing debris, clearing out mold. Additional charges may apply. Limit 3 per person. May be repurchased every 365 days. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings