Promotional value expires 120 days after purchase. Amount paid never expires. Valid only within 60 miles of zip code 20877. Appointment required. Valid only with one HVAC unit. Merchant's standard cancellation policy applies (any fees not to exceed voucher price). Limit 1 per person, may buy 2 additional as gift(s). May be repurchased every 90 days. 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.