Product review (1 stars): Do Not Stock These Filters - No Warranty If Defective
I just installed this product and it was defective. Whirlpool will not replace it because I purchased it in December 2017 and their "courtesy" warranty is only 90 days even though I just installed on April 27th 2018. The filters don't actually have a warranty according to a Whirlpool representative that I spoke to. This doesn't inspire a great deal of confidence on whirlpool products. I have all kitchenAid appliances at my home but I'll consider switching to another brand when it's time to replace them. By the way, the same representative also advise me not to "stock" the filters because of their 90-day "courtesy" warranty is based on the date of purchase. I always used two have two extra filters on hand but I won't be doing that anymore.