Home ยป Discount Filters – Free Shipping Over $50! Discount Filters – Free Shipping Over $50! Hobby & StationeryDiscount Filters 2 Buy It Now Buy It Now DiscountFilters.com offers Water, Air, Refrigerator, Humidifier, and Pool Filters and Accessories to consumers throughout the United States. We offer Free Shipping over $50 and Free Returns with No Hassle Ctomer Service.