Filterbuy Discount Codes – Verified Deals & Offers | September 2026

Save on MERV 8 air filters, MERV 11 air filters with 14 manually verified Filterbuy offers, updated for September 2026. Browse the latest Discount Codes, working discounts, and exclusive deals, with expired offers removed regularly.

Filterbuy offers 1 coupon codes and 13 deals as of September 2026. Today's top offer: Get 10% Off at Filterbuy Shop Now Filterbuy. Codes are verified and updated daily.

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10%

OFF

Get 10% Off at Filterbuy Shop Now Filterbuy

Save 10% on quality air filters from Filterbuy and enjoy convenient options for your home.

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70%

OFF

Grab Up To 70% Off Discount on Every Purchase

$76

Only

Shop The Electro-Air 16x20x5 MERV 11 Aftermarket Replacement Filter For $76

Improve indoor air quality with the Electro-Air 16x20x5 MERV 11 replacement filter. Captures particles efficiently and supports HVAC performance.

$32.49

Only

Buy Coleman 16X22X5 MERV 11 Replacement Filter For $32.49

Coleman 16x22x5 MERV 11 replacement filter improves indoor air quality by capturing dust, pollen, pet dander, and airborne particles efficiently.

$185.94

Only

Buy Coleman 16 X 22" Air Filters Merv 13 Optimal For $185.94

Coleman 16 x 22 Air Filters MERV 13 capture dust, pollen, and airborne particles, improving indoor air quality and HVAC efficiency.

$90.99

Only

Buy 12x24x6 Header Rigid Cell Filters For $90.99

High quality 12x24x6 header rigid cell filters ensure efficient airflow, superior dust capture, durable construction, and reliable HVAC performance overall.

$32.49

Only

Buy Coleman 16X22X5 MERV 11 Replacement Filter For $32.49

Buy Coleman 16x22x5 MERV 11 replacement filter for $32.49. Improve air quality, capture allergens, and maintain efficient HVAC system performance at home.

16%

OFF

Increase your cart strength with 16% off at Filterbuy and unlock exclusive benefits

Claim 16% off to raise rewards and improve cart efficiency instantly.

10%

OFF

Unlock 10% discounts at Filterbuy and improve your shopping experience

Make your checkout more effective with 10% savings and enhance your rewards quickly.

15%

OFF

Access 15% savings on essential products at Filterbuy and enhance your shopping journey

Add more value to your cart with 15% savings and enjoy consistent shopping advantages.

OFF

Achieve 8% off at Filterbuy and uplift your cart without any hassle

Get 8% off to widen your collection and improve your checkout capacity.

10%

OFF

Get 10% savings at Filterbuy and enhance your overall shopping potential

Improve your cart instantly with 10% off and access extra advantages with ease.

10%

OFF

Get 10% instant savings on trending picks at Filterbuy and upgrade your cart value

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14%

OFF

Enjoy 14% discount at Filterbuy and refine your shopping experience

Elevate checkout speed with 14% savings and enhance overall cart productivity.

Customer Reviews

4.8

Average Rating

Total Reviews

Paul Young

★★★★☆

1 month ago

Detailed filter order experience

I placed an order for two MERV 11 air filters, 20x25x1, and a 4-pack of 1-inch air filters. The website interface was straightforward for selecting sizes and MERV ratings. Shipping took about 6 business days to arrive in New York, which was within their estimated timeframe. All filters were well-packaged and arrived without any damage. The build quality of the pleated filters seems solid, with a sturdy frame. I installed the MERV 11 in my main HVAC unit, and it fit snugly without any gaps. The airflow seems good, and I haven't noticed any whistling noises. Customer service wasn't needed, but the FAQ section answered my initial questions about measuring. Overall, a smooth purchase with good product quality.

✓ Reply submitted. Will be published after approval.

Jacob Moore

★★★★★

1 month ago

Quick filter delivery

Got my MERV 8 air filters fast. They arrived in 4 days. Filters look good and fit right. Happy with the purchase. Will use them again when I need more.

✓ Reply submitted. Will be published after approval.

Robert Evans

★★★★★

1 month ago

Great custom size filters

I ordered some custom size air filters for my old furnace and they fit perfectly! It was so easy to measure and order them online. The quality feels really good, much better than what I used to get at the hardware store. Shipping was quick too, got them in about 5 days. Will definitely be ordering from Filterbuy again!

✓ Reply submitted. Will be published after approval.

Amanda Phillips

★★★★★

2 months ago

Consistent quality, fast shipping

This was my third order from Filterbuy, and like the previous times, everything was spot on. I always get the MERV 13 air filters for my home. The quality is consistent; they always fit my system perfectly and seem to last the full three months before needing a change. Shipping is reliably quick, usually arriving in under a week. I appreciate not having to worry about finding the right size or quality at a local store. It's just easy to reorder here.

✓ Reply submitted. Will be published after approval.

Filterbuy Community Discussion

Share tips, ask questions & help fellow shoppers save more

Patricia Robinson

4 weeks ago

How long does shipping usually take for these filters? I'm in NYC and need some new ones kinda soon.

A Alex C. 3 weeks ago

From what I remember, shipping was pretty quick for me in Boston, like 3-5 days. They ship from Florida, so NYC should be similar.

A Alex T. 3 weeks ago

Yeah, I'm in New Jersey and usually get mine within a week. Free shipping is nice too.

7 Responses (2)

William Robinson

2 weeks ago

Hey guys, wondering if anyone has ordered custom size filters from here before? My furnace is super old and has weird dimensions.

S Susan Williams 2 weeks ago

Yeah, they totally do custom sizes. I got some for my super old AC unit last year, no problem.

O Olivia Lopez 1 week ago

Yep, they're one of the main places for that. Just make sure you measure carefully because returns on custom stuff can be tricky sometimes, although their policy is usually pretty good.

6 Responses (2)

James Nelson

2 weeks ago

Is the subscription worth it? I change my filters every 3 months for my AC unit.

S Sam Garcia 2 weeks ago

Definitely. The subscription discount is usually like 5-10% off, plus you don't have to remember to order. I've been doing it for my MERV 8s for a year now.

B Brian T. 2 weeks ago

Yeah, if you're consistent, it's worth it. Mine come every quarter and it's one less thing to think about, saves a few bucks too.

6 Responses (2)

Eric Hill

1 month ago

Anyone know if they have a discount for first-time buyers? Or like, a military discount code?

A Alex D. 1 month ago

They do military discounts, I think you have to verify through some service on their site. Not sure about a general first-time buyer one though, usually their best deals are subscriptions.

G Grace T. 1 month ago

I've seen the military discount mentioned. For first orders, sometimes they'll have a pop-up, but the subscription savings are usually better long-term.

3 Responses (2)

Nathan Roberts

1 month ago

Are these filters actually good? Like, compared to Honeywell or something from Home Depot, is Filterbuy legit?

B Brian 1 month ago

I've been using their MERV 11s for years, totally legit. My allergist even recommended them for my house over the standard big box store ones.

G Grace Carter 1 month ago

They're a real manufacturer, like, they make their own stuff in the US. Quality feels good, definitely comparable to the major brands, sometimes better than what you find at Lowe's.

2 Responses (2)

Mary Rivera

1 month ago

Can you actually stack coupons here? I have a percentage off but also want to do the subscription for my MERV 13 filters.

S Sean H. 1 month ago

Nah, pretty sure you can't stack coupons with the subscription discount. It's one or the other most times with them.

B Betty Rodriguez 1 month ago

Yeah, I tried that once, it didn't work. The subscription discount usually gets you the best price anyway, especially if you set it and forget it.

1 Responses (2)

Richard N.

1 month ago

What's the return policy like if I accidentally order the wrong size? Is it a hassle?

L Leah Wright 1 month ago

Returns were pretty easy for me last month when I messed up a dimension. Just fill out a form online and they sent me a label.

T Tim P. 1 month ago

It's not bad, but if it's a custom size filter, that might be different. For standard sizes, usually no problem.

1 Responses (2)

Ashley Gonzalez

3 weeks ago

How do you even figure out what MERV rating you need? Is 8 good enough or should I go higher for pet dander?

S Sofia 3 weeks ago

MERV 8 is like basic good filtration. For pet dander, you'd probably want MERV 11 or even 13 if your system can handle it. Higher MERV means it catches smaller particles.

A Andrew Davis 3 weeks ago

I have a dog and use MERV 11 and it makes a noticeable difference. Check your HVAC manual though, some older systems struggle with really high MERV filters.

0 Responses (2)

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