---
title: "Discount Filter Store Promo Codes"
description: "Promo Codes at Discount Filter Store. Check for offers and shopping options on Refermate."
canonical_url: "https://refermate.com/store/discount-filter-store/promo-codes"
md_url: "https://refermate.com/store/discount-filter-store/promo-codes"
last_updated: "2026-09-15T06:07:08.877Z"
---
# Discount Filter Store Promo Codes - 70% Off + Up to 4.2% Cash Back

- URL: https://refermate.com/store/discount-filter-store/promo-codes
- Page: Promo Codes
- Store: Discount Filter Store
- Featured current offer: 70% Off
- Current offers: 68 offers
- Store website: https://www.discountfilterstore.com
- Last refreshed: Tuesday, September 15, 2026

## Current Offers

### 1. 35% OFF
Type: Coupon code
Code: `NEXT35`
Description: Get 35% Off Sitewide

### 2. 30% OFF
Type: Coupon code
Code: `FRIDGE30OFF`
Description: Take 30% off Tier1 & Tier1 Plus Fridge Filters when you enter this Discount Filter Store coupon code.

### 3. 15% OFF
Type: Coupon code
Code: `15WARMHOME`
Description: Get 15% off Furnace & Air Filters when you enter this Discount Filter Store coupon code.

### 4. 15% OFF
Type: Coupon code
Code: `15NODRYAIR`
Description: Get 15% off Humidifier Filters when you enter this Discount Filter Store coupon code.

### 5. 10% OFF
Type: Coupon code
Code: `10PERCENTTUB`
Description: Copy this Discount Filter Store coupon code to enjoy 10% off All Spa & HotTub Filters.

### 6. $25 OFF
Type: Coupon code
Code: `HONEY25`

### 7. 70% OFF
Type: Deal
Description: Up to 70% off Filters.

### 8. Discount Filter Store Offer
Type: Deal
Description: Save on Water Systems and Cartridges and Get Clean Water for Every Room in the House.

### 9. Discount Filter Store Offer
Type: Deal
Description: Save on the Full Line of Salt and Salt Free Softening Systems.

## About Discount Filter Store

Discount Filter Store is a United States online retailer specializing in replacement filters for home appliances, offering discount pricing on common filter types for water, air, and HVAC systems.

## Frequently Asked Questions

### 1. How many Discount Filter Store promo codes are available right now?
Discount Filter Store currently has 68 current offers listed. Availability and terms can change, so check the offer details before checkout.

### 2. What is a current featured offer at Discount Filter Store?
One current featured Discount Filter Store offer is "70% Off". Availability and terms can change, so review the offer details before checkout.

### 3. Does Discount Filter Store offer cash back?
Yes, you can earn up to 4.2% cash back on eligible Discount Filter Store purchases through Refermate. The offer and cash back terms determine whether a promo code can be combined with it.

### 4. How do I use a promo code at Discount Filter Store?
When a code is listed, copy it from this page, add your items to your Discount Filter Store cart, and paste the code in the promo code field at checkout. Check the offer terms to confirm the discount applies.

### 5. When was this Discount Filter Store promo codes page updated?
Refermate updates this page when its Discount Filter Store offer or store data changes. Check the current offer details before shopping.

## Explore More

- Site map: https://refermate.com/sitemap.md
- Store sitemap: https://refermate.com/stores/sitemap.md
- Store directory: https://refermate.com/stores