Filterbuy Discount Codes & Verified Deals – November 2026
Looking for the latest Filterbuy Coupon Codes? As of November 2026, our team has manually verified 17 offers for MERV 8 air filters, MERV 11 air filters. Browse current Discount Codes, working discounts, and exclusive deals, while expired offers are regularly removed.
Filterbuy offers 0 coupon codes and 17 deals as of November 2026. Today's top offer: Shop Filterbuy 16.5x22x2 MERV 8 Filters Starting at €11.88 Each. Codes are verified and updated daily.
Improve your indoor air quality with reliable HVAC filters that capture dust, pollen, and airborne particles. Enjoy efficient filtration, better airflow, and convenient home maintenance starting at €11.88 each.
Buy the 16x25x5 MERV 11 filter for €61.85 and upgrade your home air filtration. Enjoy reliable performance and convenient sizing for compatible HVAC systems while keeping your indoor air cleaner.
Save up to 70% on each filter when you buy packs. Shop now to enjoy excellent savings, stock up on your favorites, and take advantage of this limited-time offer.
Stock up for spring! Get about $10 off your order of pleated air filters and humidifier pads when you spend $50 or more.
Find MERV 11 air filters from a low price of $12. Pricing varies by size and quantity.
Enroll in the Subscribe and Save program for 5% off recurring filter deliveries. Manage your subscription anytime.
Enjoy year-round indoor comfort with powerful cooling and efficient heating, adjustable temperature controls, and reliable climate performance, ideal for maintaining pleasant room conditions for €804.74.
Discover special pricing on select air filters during the Spring season. This offer is available for a limited time.
New customers receive 10% off their initial purchase. This discount applies at checkout for new accounts.
Verified military personnel and veterans receive 10% off their filter orders. Verification is required at checkout.
Purchase furnace filters in multi-packs for additional savings. Discounts vary by pack size and filter type.
All orders ship for free within the US. This offer applies to every purchase made on the website.
Educators can get 10% off their air filter purchases. Verify your teacher status to apply this discount.
Find various refrigerator water filters priced below $30. Options include multiple brands and types.
A 10% discount is available for verified first responders. This offer helps support essential workers.
Prepare for the new season with fresh air filters. Enjoy around $10 off your order of 5 inch air filters.
Get a discount on custom size air filters for unique HVAC systems. The discount applies based on filter dimensions.
Customer Reviews
Good filters, shipping could be faster
I ordered a multi-pack of MERV 11 air filters, 20x25x1. The pricing was competitive, especially with the multi-pack savings, which was a plus. The filters themselves seem well-made and fit perfectly into my HVAC unit, no issues there. They arrived in good condition. However, shipping took 8 days to get to my address in Phoenix, which felt a bit long. I've had orders from other online stores arrive quicker. Customer service was responsive when I inquired about the tracking, so that was helpful. Overall, a decent experience and I'd likely order again for the value, but faster delivery would make it even better.
Filters arrived, fit well
I bought MERV 8 air filters, 16x20x1. They arrived in 5 days. Filters fit my furnace. Good price. No issues.
Consistent quality, reliable service
This was my third time ordering from Filterbuy, and they continue to be reliable. I got my usual custom size air filters, 22x22x1 MERV 13, for my older home. The ordering process was smooth, just like before. The filters arrived well-packaged and within the estimated delivery window, about 6 days this time to my home in Atlanta. The quality of the filters has been consistent across all my orders; they always fit correctly and seem to do a good job. I keep coming back because I know what to expect, and they haven't disappointed me yet with product quality or shipping reliability.
Amazing filters for my allergies!
I can't believe the difference these filters made! I purchased the allergen filters, MERV 13, 20x20x1, and my indoor air quality has improved so much. My allergies aren't nearly as bad since I put these in. The website was super easy to navigate, and finding the right size was simple. Delivery was quick, only took 4 days to get to my place in Dallas. I'm definitely subscribing next time for the discount. These are fantastic, and I'll tell everyone to check them out!
Filterbuy Community Discussion
Share tips, ask questions & help fellow shoppers save more
Are these filters actually made in the US? Trying to support American companies where I can.
Wondering about shipping time to Chicago. Need some filters pretty quick, like within a week if possible. Is that realistic?
Can you combine the military discount with, say, the subscribe and save thing? Or is it one or the other?
Hey, thinking about ordering some custom filters. Does Filterbuy actually do true custom sizes, or is it more like pre-set options that are kinda close?
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