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Discount Filters is definitely the place to go if you are in the market for a new air or furnace filter, refrigerator water filter, or humidifier filter. The prices are competitive, they offer free shipping and returns, and they also send you a reminder email when it's time to replace your filter, so you don't have to keep track of when you last did so!

All of their products also come with a one year purchase guarantee, so you don't have to worry that you're getting a subpar product. also offers an auto-delivery option, which is a subscription program that will send you filters on a set schedule, and this service also assures you that your price will never go up. The deals are great on their own, but if you are able to find a coupon, promo code, or a discount code, your savings will just keep climbing! What's not to like about this website? Any homeowner or business owner needs one or more of these types of filters, so go check out their website today and get started saving on those filters! Coupon Codes, Promo Codes & Discounts

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Popular Promotional Codes


$15 off orders of $100+.

Verified Coupon
2 uses
Last used 9 hours ago
Avg. savings $6.00
#1 Best Promo Code


$10 off orders of $75+.

Verified Coupon
3 uses
Last used a day ago
Avg. savings $5.00
#2 Best Promo Code


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$20 off orders of $125+.

#3 Best Promo Code

Special Offers


Satisfaction Guaranteed on All Filters + Free Shipping on $50+ Orders and Free Returns.


Easy to Use Fridge Filter Finder with Guaranteed Fit Savings + Free Shipping Orders $50+ and Free Returns.


All Air and Water Filters For Less Plus Free Shipping Over $50 and Returns Guaranteed.


Furnace and AC Filters in All Sizes and Free Shipping Over $50 and Free Returns.


Refrigerator Water Filters For Less Plus Free Shipping Over $50 & Free Returns.


Free Shipping Over $50.


Build Your Own Custom Cleaning Kit: Selected Products Now: 5 for $35.00.


Shop for Last-Minute Gifts.


Make DIY Mask With MERV 14 Filter Media.