Promotional value expires 120 days after purchase. Amount paid never expires. Residential only. Limit 1 system. Dryer vent cleaning only up to 5 ft. $35 fee for travel outside of service area. Appointment required. Valid only within 25 miles of zip code 20877. 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. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.