Promotional value expires 90 days after purchase. Amount paid never expires. Limit 1 per person, may buy 1 additional as a gift. Valid only for option purchased. Limit 1 per visit. Limit 1 per household. Appointment required. 24-hr cancellation notice required. Dryer vent option only valid for first floor, any additional floors may be subject to additional charge. Valid only within 40-miles of 63121. Additional Vents and/or Returns are $10 each. Additional Mainlines start at $39. Crawl spaces and attic systems may incur additional cost. Complete written estimate will be given before any work begins. The entire system must be cleaned to receive an offer. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings