Sitewide
25% OFF
Discount Filter Store is offering a 25% discount on your entire purchase. There’s no minimum order requirement to qualify for this deal.
Est. ~$13 on $50
Discount Filter Store promotional codes, October 2026
4 working codes · 14% average savings
Discount Filter Store coupon codes
Sitewide
10% OFF
You can receive a 10% discount on Tier1 and Tier1 Plus Filters at Discount Filter Store. Confirm qualifying items at checkout.
Est. ~$5 on $50
Deal
30% OFF
Save 30% on Tier1 & Tier1 Plus Fridge Filters available at Discount Filter Store. This offer applies to specific items, so verify which filters are eligible at checkout.
Est. ~$15 on $50
Deal
15% OFF
You can get 15% off your order of Furnace & Air Filters at Discount Filter Store. Be sure to check which filters are included before finalizing your purchase.
Est. ~$8 on $50