Discount Filter Store promo codes
20 of 40 Discount Filter Store codes passed a checkout test. Each one lists what it covers and when it was last checked.
- Codes listed
- 40
- Verified
- 20
- Sitewide
- 14
- Last checked
- Oct 15, 2026
Verified codes
20% Off
Verified
20% Off Select Brand Fridge and Furnace Filters at Discount Filter Store
- 20% off your order
- Applies to: Select brands
15% Off
Verified
15% Off All Replacement Filters at Discount Filter Store
- 15% off your order
- Applies to: Select items
15% Off
Verified
15% Off Aprilaire 35 Replacement Humidifier at Discount Filter Store
- 15% off your order
- Applies to: Select items
15% Off
Verified
15% Off Select Items at Discount Filter Store
- 15% off your order
- Applies to: Select items
15% Off
Verified
15% Off Select Items at Discount Filter Store
- 15% off your order
- Applies to: Select items
15% Off
Verified
15% Off Tier1 And Uswf Fridge Filters at Discount Filter Store
- 15% off your order
- Applies to: Select categories
15% Off
Verified
15% Off Uswf Refrigerator Water Filters at Discount Filter Store
- 15% off your order
- Applies to: Select categories
15% Off
Verified
15% Off Top Brands Whole House Cartridges at Discount Filter Store
- 15% off your order
- Applies to: Select items
11% Off
Verified
11% Off (Storewide) at Discount Filter Store
- 11% off your order
- Works sitewide — no specific product required
- Applies to: storewide
11% Off
Verified
11% Off (Storewide) at Discount Filter Store
- 11% off your order
- Works sitewide — no specific product required
- Applies to: storewide
10% Off
Verified
10% Off Uswf Pfas at Discount Filter Store
- 10% off your order
- Applies to: Select items
10% Off
Verified
10% Off (Storewide) at Discount Filter Store
- 10% off your order
- Works sitewide — no specific product required
- Applies to: storewide
10% Off
Verified
10% Off Storewide at Discount Filter Store
- 10% off your order
- Works sitewide — no specific product required
- Applies to: storewide
10% Off
Verified
10% Off (Storewide) at Discount Filter Store
- 10% off your order
- Works sitewide — no specific product required
- Applies to: storewide
10% Off
Verified
10% Off Storewide at Discount Filter Store
- 10% off your order
- Works sitewide — no specific product required
- Applies to: storewide
10% Off
Verified
10% Off Storewide at Discount Filter Store
- 10% off your order
- Works sitewide — no specific product required
- Applies to: storewide
- Excludes: other
10% Off
Verified
10% Off Water Softeners (Not Valid Together Or With Any Other Promotional Offers) at Discount Filter Store
- 10% off your order
- Applies to: Select items
- Excludes: other
10% Off
Verified
10% Off Select Items at Discount Filter Store
- 10% off your order
- Applies to: Select items
5% Off
Verified
5% Off Air Filters and Tier1 Fridge Filters at Discount Filter Store
- 5% off your order
- Applies to: Select categories
Free Shipping
Verified
Free Shipping Storewide at Discount Filter Store
- Works sitewide — no specific product required
- Applies to: storewide
Unverified codes
Listed as found; some may have ended60% Off
Not verified
60% Off Tier1 & Tier1 Plus Fridge Filters
50% Off
Not verified
50% Off Your Purchase
30% Off
Not verified
Discount Filter Store Coupon: 30% Off Your Order
30% Off
Not verified
Today Only! 30% Off Sitewide
20% Off
Not verified
20% Off Your Order
20% Off
Not verified
Take Up to 20% Off Allair and Humidifier Filters
15% Off
Not verified
Save 15% Off Your Order
15% Off
Not verified
15% Off Sitewide + Free Shipping
11% Off
Not verified
11% Off Sitewide
10% Off
Not verified
10% Off with Discount Filter Store Code
10% Off
Not verified
10% Off Your Purchase
10% Off
Not verified
Score 10% Off Using This Discount Code
10% Off
Not verified
10% Off Sitewide + Free Shipping
10% Off
Not verified
10% Off Your Purchase
10% Off
Not verified
10% Off Sitewide
5% Off
Not verified
5% Off Your Order with Discount Filter Store Discount Code
5% Off
Not verified
Get 5% Off Your Purchase Storewide
5% Off
Not verified
5% Off with Discount Filter Store Promo Code
5% Off
Not verified
Take 5% Off Your Purchase
5% Off
Not verified
Discount Filter Store Code - 5% Off
How to use a Discount Filter Store code
Show and copy the code
Start with a verified code. The code opens in a new tab and this tab continues to Discount Filter Store.
Fill your bag at Discount Filter Store
Add the items the code applies to. Sale items and some brands are often excluded.
Paste it at checkout
Enter the code in the promo field before you pay. If the total does not change, try the next code.
Questions about Discount Filter Store codes
Does Discount Filter Store have a working promo code right now?
Yes. 20 of the 40 Discount Filter Store codes listed here passed a checkout test, most recently on October 15, 2026.
What is the best Discount Filter Store promo code today?
The strongest offer we have on file is “20% Off Select Brand Fridge and Furnace Filters at Discount Filter Store”, which is verified.
Do Discount Filter Store codes work on everything?
14 of the listed codes are described as sitewide. The rest are limited to selected items, a minimum spend or new customers; each code lists its terms where they are known.
How do I use a Discount Filter Store promo code?
Select “Show code” on this page and copy the code, add your items to the bag at Discount Filter Store, and paste the code into the promo or discount field at checkout before you pay. The order total should update straight away; if it does not, the code does not apply to your basket.
Why did my Discount Filter Store code not work?
The usual reasons are an expired code, sale items that are excluded, a minimum spend that has not been reached, or a code limited to first orders. Codes marked “Verified” were accepted at checkout on the date shown; unverified codes are listed as found and may already have ended.
Codes are collected from public sources and re-checked on a rolling schedule; retailers can end an offer at any time. InfluencerRate may earn a commission when you shop through links on this page.