Promotional value expires 120 days after purchase. Amount paid never expires. Valid only within 40 miles of zip code 28204. One voucher per A/C system. Additional cost of $99 per each additional AC system. One air return and one main are included. Sanitizing, fogging, deep cleaning, furnace/air handler cleaning not included; may be added for an additional fee. Residential use only; not valid for commercial buildings. Maintenance cleaning using a negative air machine. Clogged dryer vents or dryer vents over 8 feet would be an additional cost. Valid only for option purchased. May be repurchased every 365 days. Limit 1 per visit. Limit 60 per person. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings