No expiration date. Buy up to 3 vouchers for yourself and unlimited as gifts. Limit 3 vouchers for personal use. By appointment only, please call 780.448.9297 for bookings. 24 hour cancellation policy or voucher is voided. Package includes a furnace and duct cleaning for up to 10 vents, plus a $50 credit towards your purchase of an optional Lifetime Filter or sanitizer throughout all vents. Offer also includes a $20 coupon for future carpet cleaning, and a Contractor's Pricing voucher for the Brick at the South Common location at 23rd Avenue and Calgary Trail. Additional service will be charged at a rate of $60 per main, and $10 for each additional vents. Residents in Edmonton, Sherwood Park and St. Albert will be serviced at no additional fuel charge. Additional fuel charges apply for residents in Stony Plain, Spruce Grove and Leduc. All additional charges are payable to Perfection Furnace & Carpet Cleaning at the time of appointment. Not valid with other offers. No cash back or credit. Not valid for tax and gratuities. Cannot be redeemed before Monday, February 27, 2012.