SPECIAL OFFER INCLUDES: Complete system inspection with written recommendations for additional cleaning. 12 Vent minimum charge. One coupon per household. Mains priced separately. Some restrictions may apply. One coupon per customer. Coupons may not be combined with any other offer. With Valpak® coupon only. Must present coupon at time of order. Coupon void if altered. Expires 03/13/2021.