Window Cleaning Discounts 2017 Chelan Wenatchee Leavenworth By Alpine Adventurer | August 1, 2017 | Comments Off on Window Cleaning Discounts 2017 Chelan Wenatchee Leavenworth Enjoy our special offer on various services from Alpine High Window Cleaning for the month of August 2017 Only. Choose from $25 OFF, Free Up-Grades or 20%. Call or E-Mail today! Posted in The Alpine High Adventure and tagged Chelan, Discount, Offer, quincy, Special, wash, wenatchee, windows