Promotional value expires 120 days after purchase. Amount paid never expires. Valid only within 25 miles of zip code 92126 , 85711 , and 55415. Appointment required. Maintenance cleaning with a 2700cfm negative-air machine; air return will be brushed. Sanitizing, mold treatment, and furnace cleaning are not included but are available at additional cost. Additional vents above 9 or 12 will require additional machine time at additional cost. Valid only within 50 miles of zip code 60607. Limit 1 per person(s), may buy 1 additional as gift(s). Valid only for option purchased. May be repurchased every 90 days. Limit 1 per household. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings