Expires on 7-Feb-2013. Buy 1 voucher for yourself and unlimited as gifts. Limit 1 voucher for personal use. By appointment only, please call 1.866.941.3334 for bookings. Package includes duct and vent cleaning for up to 13 vents for your home, a $50 gift certificate to use towards a filter and sanitizer and a $30 gift certificate to use towards dryer vent. Additional vents are $10 each to be paid directly to Ambridge New Duct Cleaning. Servicing within London city limits. Purchase price of voucher will remain valid after promotional value expires. Not valid with other offers. No cash back or credit. Not valid for tax and gratuities. Cannot be redeemed before Tuesday, August 7, 2012.