How can I obtain proof of purchase for my self-regenerating water softener if I do not have a receipt?

Proof of purchase may be obtained by calling records departments for many of the big box stores such as Home Depot, Lowes and Costco. Companies that install self-regenerating water softeners, such as Culligan, GE, Kenmore (Sears), and Rayne, will also be able to provide you with receipts and purchase information. Credit card companies can also provide back-statements that would include purchase prices.

Without proof of purchase, you can still receive a $300 rebate if the self-regenerating water softener is connected and in working condition.