Note, must be shipped and sold by Amazon Warehouse Deals to qualify. Items are graded and sold as used or open-box. Some exclusions may apply. Coupons are typically one use per account.
Also available, Amazon Warehouse Deals offers an additional 25% off Open Box Air Conditioner Units (discount appears in cart). Save an additional $10 Off Orders of $50 or More when you enter promotion code WD1STTIME at checkout. Shipping is free with Prime or if you spend $35 or more.
Editor's Notes & Price Research
If you don't have Prime, there's free 30-day trial with free 2-day shipping, video streaming & more available. - daisybeetle
EDIT: SD members are reporting that this code works even if it is not your first order with Amazon Warehouse Deals.