Promotional value expires 360 days after purchase. Amount paid never expires. Valid only within 15 miles of zip code 22309. Appointment required. Valid for standard sized double hung windows on homes up to 2 stories. Additional windows, sliding glass doors, skylights, french panes, over-sized windows, and bug screens can be cleaned for an additional fee. Please make home size and special requests known during booking. Limit 2 per person, may buy 3 additional as gift(s). May be repurchased every 120 days. Limit 1 per visit. Limit 1 per household. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.