Discount Filter Store Promo Codes for October 2026

Purchase one select shower filter and receive the second one at a 10% discount. Both items must be from the same selection.

A 15% reduction is applied to all reverse osmosis systems. This provides advanced water purification.

Find Merv 8 furnace and air filters with prices beginning at $12.99. This covers various sizes.

Subscribe to the newsletter and receive a 10% discount on your subsequent order. A welcome email will contain details.

Orders totaling $50 or more qualify for complimentary standard shipping. No minimum purchase is required for this offer.

Under sink water filtration systems are available with prices starting at $49.99. Explore different models.

Find TDS meters and water testing kits for prices below $30. These tools help evaluate water quality.

UV water purification systems are available with a 10% discount. Ensure germ-free water for your home.

Get a 5% price reduction when you sign up for recurring filter deliveries. This ensures continuous savings.

Refer a friend and both of you will receive 10% off your next purchase. Terms and conditions apply.

Discount Filter Store offers 10% off Merv 11 Air Filters. Upgrade your home's air quality with this limited-time offer on essential filtration.

Purchase multiple replacement fridge filters and get 12% off your order. Minimum quantities may apply.

Upgrade your home with 10% off whole house water filtration systems. This offer helps you ensure clean water throughout your home.

Keep your water clean with up to 15% off select refrigerator water filters at Discount Filter Store.

Enjoy an 8% discount on all faucet filters and water pitcher filters. Improve your drinking water easily.

All inline water filters are available for 10% less than their regular price. These are suitable for various applications.

Active duty military personnel and veterans receive a 10% discount. Verification of service may be required.