Promotional value expires 90 days after purchase. Amount paid never expires. Valid only within 20 miles of zip code 78217. Extra fee of $ 20 outside service area. Does not apply to annual cleanings. Appointment required. Merchant's standard cancellation policy applies (any fees not to exceed voucher price). Limit 1 per person, may buy 1 additional as gift. Valid only for option purchased. Over 12 vents would be $10 per vent. More than 1 return is $15 per return. Additional fee of $30 will apply to dryer vents on roof. Not valid for annual cleanings. Not valid for apartment complexes. Cannot be combined with any other offers. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings