DiscountFilters Coupons & Promo Codes
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38 Discount & Promo Codes September 2025
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DiscountFilters coupon codes
- All [ 38 ]
- Coupons [ 10 ]
- Offers [ 28 ]
- Sitewide [ 1 ]
- Freeshipping [ 16 ]
15%
off
off
deal
sign up and get 15% off your order.
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20%
off
off
code
20% off air filters
Avail this code at checkout and receive a 20% discount on air filters.
N20
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15%
off
off
code
15% off furnace & ac filters + free shipping
S15
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20%
off
off
code
20% off air filter accessories
Apply this code at checkout and receive a 20% discount on air filter accessories.
E20
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15%
off
off
code
save 15% off humidifier filters with promo code
Redeem this code at checkout and take a 15% discount on humidifier filters.
The offer expires on April 24, 2021, and cannot be applied with any other promotional offer.
Offer good while supplies last. Applies only to in-stock items.
E15
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20%
off
off
code
save 20% off fridge air filter with promo code
Buy a fridge air filter, use this code and take 10% savings on your purchase. Discount applies in cart.
The offer expires March 23, 2021, and not valid with any other offer.
E20
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5%
off
off
code
5% off sitewide
Use this code at checkout and save 5% on your order.
YVE
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$10
save
save
code
take $10 off all cleaning products orders $75+ with discount code
Save $10 on all cleaning products orders over $75, apply this code at checkout now.
Minimum purchases are required.
The offer expires on April 15, 2021, and cannot be applied with any other promotional offer.
hjy
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$15
save
save
code
get $15 off refrigerator filters orders $100+ with promo code
Purchase refrigerator filters over $100 and save $15 on your buy.
Don't forget to use this code at checkout. No adjustments on previous purchases.
Offer ends on 4/26/21, and cannot be applied to any other promotional offer.
MF3
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$20
save
save
code
save $20 off inline filters orders $125+ with coupon code
Avail this code at checkout and get a $20 discount on orders over $125.
One coupon code may be used per order. Coupon codes cannot be combined or used with other offers or promotions.
This promotion cannot be applied to past orders.
2GZ
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$50
save
save
deal
satisfaction guaranteed on all filters + free shipping on $50+ orders and free returns at discount filters
Click to activate.
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$50
save
save
deal
furnace and ac filters in all sizes and free shipping over $50 and free returns at discount filters
Click link to activate discount.
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$50
save
save
deal
free shipping over $50 at discount filters
Click through to get started.
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$50
save
save
deal
easy to use fridge filter finder with guaranteed fit savings + free shipping orders $50+ and free returns at discount filters
Click through to shop.
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20%
off
off
code
take 20% off all items with coupon code
Take 20% savings on your order use this code at checkout now.
The offer expires on April 22, 2021, and cannot be applied with any other promotional offer.
Offer good while supplies last. Applies only to in-stock items.
AC2
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$35
save
save
deal
selected products - 5 for $35
Build your own custom cleaning kit at Discount Filters. The selected products are now five for $35.
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deal
make diy mask w/ merv 14 filter media
Don't miss out! Hurry to Discount Filters to make DIY Mask with MERV 14 Filter Media!
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$50
save
save
deal
free shipping over $50.
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$50
save
save
deal
all air and water filters for less plus free shipping over $50 and returns guaranteed.
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$50
save
save
deal
refrigerator water filters for less plus free shipping over $50 & free returns.
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deal
shop furnace + ac filters: in all sizes
Score furnace and AC filters, in all sizes, at Discount Filters. Claim free shipping when you spend $50.00, or more. Plus, free returns on your order!
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$50
save
save
deal
free shipping on $50 orders + free returns
Snag free shipping with your order of $50.00, or more, at Discount Filters. Claim the easy to use fridge filter finder when you shop now and score a guaranteed fit with free returns!
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deal
all air and water filters for less plus free shipping and returns guaranteed.
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$35
save
save
deal
custom cleaning kit - 5 products for $35
Build Your Own Custom Cleaning Kit - Get 5 products for $35
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deal
make diy mask with merv 14 filter media.
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deal
fridge filters.
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deal
click here for free shipping & returns
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deal
shower filters (free shipping & returns)
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deal
pool & spa - shop now
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deal
shop furnace filters + free shipping
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deal
free shipping w/ air filters
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deal
free shipping & returns
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deal
shop for last-minute gifts
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deal
shop gifts
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$35.00
save
save
deal
build your own custom cleaning kit: selected products now: 5 for $35.00.
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deal
shop humidifier filters
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deal
refrigerator water filters.
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deal
free shipping on any order
Get Deal
DiscountFilters Expired Coupons
| Description | Code | Status |
|---|---|---|
| 20% off sitewide | INDOOR20 | Expired |
| 20% off your order | HACK20 | Expired |
| 20% off your order | GERM20 | Expired |
| 10% off your order | SAVES | Expired |
| 15% off sitewide w/ code | COMBO15 | Expired |
| extra 20% off online orders | FLOW20 | Expired |
| 15% off any order | rakuten15 | Expired |
| 10% off sitewide | AFF10 | Expired |
| extra 20% off your order | ENERGY20 | Expired |
| 20% off your order | VDAY20 | Expired |
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