20x25x4 AIRx ALLERGY TopTech TT-FM-2025 Replacement Air Filter - MERV 11, 2-Pack product image

20x25x4 AIRx ALLERGY TopTech TT-FM-2025 Replacement Air Filter - MERV 11, 2-Pack

Model: 20x25x4TT-ALLERGY / Part: #177890

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5 stars

(136)

4 stars

(8)

3 stars

(3)

2 stars

(4)

1 star

(8)

Free Returns
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20" X 25" X 4" Replacement For TopTech TT-FM-2025

TOTAL $93.47 ( 2 Pack for $0.00 each )

In Stock

2026-04-06

2 Pack -

$93.47

$46.74 each

4 Pack -

$171.34

$42.84 each

Is this the right air filter for you?

If you want superior indoor air quality (IAQ) for your family, this filter is for you! This filter removes many allergy-causing pollutants like pollen and dust mite debris and keeps your air clean. We promise convenient ordering and complete satisfaction!

Quality 4" pleated air filter offers improved filtration and longer service life over common 1" filters
MERV 11 rating means the filter attracts and holds household allergens like dust, pollen, mold spores, and other small particles that irriate your lungs
Replaces the TopTech TT-FM-2025 filter - nominal size 20x25x4 (actual size 19-3/8" x 24-3/8" x 3-5/8")
Will also replce the new TopTech "QwikBox" filter, part number TT-FM-2025QB
Replace every 6 months under normal use
Made with pride in the USA
Fast Shipping and Free Returns on all filters

What does this air filter remove?

What part numbers does this filter replace?

Toptech TT-FM-2025, TT-FM-2025QB

What air cleaners does this filter fit?

TopTech TT-MAC-2025, TT-MAC-2522
Do you want to know about the technical specs?

Nominal Dimensions	20 x 25 x 4"
Actual Dimensions	19-3/8" x 24-3/8" x 3 -5/8"
Filter Media	Electrostatically charged 100% synthetic gradient media that does not support microbiological growth
Filter Support Grid	30 gauge galvanized expanded metal grid
Frame	Moisture resistant double-wall beverage board
Max Temperature	180F (82C) continuous service, peak 225F (107C)
Max Humidity	Resistant to 100% R.H.

Reviews

4.6 / 5 (159)

HEROW 2 days ago

Great product at a fair price. Quick delivery. Great company to do business with.

John McEntire 5 days ago

Great customer service. First order arrived crushed. Emailed for replacement and it was shipped immediately. Arrived in great shape. Very good company to buy from.

Otto Beer 26 days ago

Works great for 6 months

Kenneth Law 24 days ago

I have been using these filters for several years and I am totally satisfied. They are a great but. I highly recommend them.

Priscilla Bergeron 10 days ago

Nice filter, good quality and it fit my HVAC unit unlike some of the other brands I tried. Actual dimensions are printed on the filter.

John Freestone 12 days ago

Great product for allergies

KENT PILLATSCH 6 days ago

Good quality and almost 1/2 the cost of purchasing locally and shipping was free.

Thomas 16 days ago

Fits my factory 4inch perfectly

Teresa Abram 3 days ago

These are very good filters and we always get the right size from Discount Filters. We wasted time buying them locally at first and they did not fit -- even though they had the same numbers on the package. I just wish they were a little less expensive.

Rodger D 19 days ago

Most filters are about the same and most users really don’t know the difference as change as frequently as they should. What stood out was they arrived damaged cbox, after notifying company replacements were on the way, best ever resppnsr

Larry 8 days ago

Fits well! I'm totally satisfied!!!

m wolfe 21 days ago

We use this filter for our HVAC, it's the triple size and only needs to be changed every 6months. VERY well priced!

Robert Franklin Burch 16 days ago

Fins & seems to work find. Order & delivery service was good and quick

Carmen c Galvez 24 days ago

Good product.

sey katz 3 days ago

Delivery was quick and the product works beautifully.

Steve 11 days ago

Good quality and good prices

Debra E. Miller 10 days ago

Excellent product, and service.

Carmen c Galvez 14 days ago

Good price.

Hyacinth 18 days ago

Have been using these filters since 2019, Discount Filters are a great company to deal with and service/shipping are prompt. You won't be sorry you chose them.

Richard O'Dell 7 days ago

The price is great and the TopTech filters are the only ones that fit my HVAC system.

Rita Cappelletti Jung 14 days ago

Great price!

Terry Brown 1 day ago

This filter always does an excellent job.

scott thurgood 6 days ago

Good product and your service representative are very courteous and professional

Charlotte Brinkley 22 days ago

Top quality came quickly so easy to order, will order again.

C J Wright 6 days ago

The filter is only about 3 1/3 inches wide. Not 4 inches as described

Michael McGee 6 days ago

Both filters for our HVAC fit perfectly! And they were much more cost-effective than local hardware stores. We've also been buying fridge filters from DiscountFilters for years. Never had a problem.

Cynthia Bonacci 28 days ago

Good price, fast delivery ?

Tom 22 days ago

fast service and great price

Sharon Conner 22 days ago

Very good product and service

Okie 23 days ago

Equal to spec filter. Pleased with savings and service

Jerry Brewer 0 day ago

It fits to provide excellent dust reduction for 6 months or more. I will change a 6 months mostly clean filter to reduce dusting. I truly appreciate the 2 for the price of 1 during these inflationary time. Discount Filters exhibits ethics and morals.

Paul M Dow 18 days ago

This is my first purchase from this company. The filters were shipped promptly and I am currently using one. I am not an expert on filters, so my ratings are essentially guesstimates.

Judith Nichols 12 days ago

Great price, quality product, fast delivery!

Hamburg DQ Grill 12 days ago

easy ordering, fast delivery

Edward Moy 16 days ago

Excellent!

billy edwards 21 days ago

Best service on the internet

Kenneth Law 25 days ago

Filters meet all my expectations.

Janice Joyner 25 days ago

The filters arrived on time, even earlier than expected, and were exactly the size I needed. Very pleased with the service.

GINGER CLAMPIT 26 days ago

Always receive filters quickly.

Rosendo Vasquez 7 days ago

As for the product itself, I am glad there is a filter that I do not have to change monthly. And I receive the order promptly.

Ashwini Sawhney 18 days ago

Excellent

Michele Blazina 22 days ago

great value

Robert Higginbotham 23 days ago

Always pleased with products from you.

ilene araten 23 days ago

My second order of air filters. Completely satisfied

Jeanine Marchica 25 days ago

Good product. A bit hard to pull out and put in overall I would recommend it.

Kenneth Law 25 days ago

Great quality.

Judith Nichols 26 days ago

Website was easy to use and products received in timely manner. I bought a 2 pack of each size filter. Only improvement would be that each was cellophane wrapped separately for easier storage.

Gene Garrison 0 day ago

Great filter. Always works perfectly and I’m not getting ripped off by our service man.

Barbara Walker 5 days ago

Have used product before please with performance

Raymond Laird 28 days ago

Excellent filters that are an exact fit at a very fair price. And shipping was free.

Richard Gwynn 2 days ago

Product is very good along with great service and nice pricing.

Kenneth Law 18 days ago

Very satisfied with the product.

Paulette Hemmings 19 days ago

Great product and customer service! Would purchase it again!

SUSAN H LUGO 27 days ago

Very efficient company to order from with quality products

Matthew McDonald 21 days ago

Very good deal for the price. And the delivery is great.

Diane Page 14 days ago

Very good quality - great price

CHARLES DOUGLASS 27 days ago

Ten charactures

tom broderick 30 days ago

Product was as described and works great

Jacquelyn Sammons 14 days ago

It really does make a difference. We live in an older home. I could not live here I do not think with out them. I am always surprised at the amount of garbage they trap. Very pleased

Lech R Blachura 13 days ago

Good service

Cynthia Bonacci 18 days ago

Second time we purchased this filter. Fast delivery and less money than buying through air conditioning company. Will be buying thru you again !

John Dalton 30 days ago

I just got it today and installed it; however the customer service in getting it here,was GREAT! the price,quality,is also GREAT free shipping 20% off whats not too like ?

Otto Beer 11 days ago

factory installed filters

Frank Elim 14 days ago

This purchased item was the first A/C air conditioner filter that perfectly fits in the return area plenum within the stacked, metal framing region of our indoor central air-handling region. All other such 20x24x4 air-filters were not good fits, including the product provided by the A/C seller and installer about 4-5-years ago... and on an ongoing replacement basis. No more crunching necessary to force fit an oversize item into the chamber rack for retaining the filter. Salesperson on-phone manner was most polite an helpful. Thank You. Frank Elim

Tom Lainson 14 days ago

Delivered as promised and noticed a drop in dust also. Filters last longer than cheaper ones so cost is not too much different.

Roy 20 days ago

very good value as compared with big box stores

Kelly Duke 27 days ago

Very satisfied.

m wolfe 15 days ago

After finding this company, would not even think of buying my filters elsewhere. Our HVAC system requires the triple pac filters and they are pricey. Discount Filters sells what we need at a huge price reduction from our local stores. VERY happy with this company!!

spsummey 17 days ago

The filter is too expensive. I understand from my HVAC technician that there are equally as good filters on the market at a more reasonable price.

William Hart 19 days ago

Excellent product and easy to order.

Luther W Sims 2 days ago

Great product and value

John Zidanich 5 days ago

MERV 11 Allergy filter does a great job in my house,helps with my allergy conditions!

Paula J. Bradley 19 days ago

It was reasonably priced, no shipping fees, and it came when promised.

Jennifer Carey 30 days ago

Compared to the name brand filter I had in my machine, this felt a bit flimsy with fewer filter bends. I don't think I will go with this purchase next time.

Jay 17 days ago

Great product. Fast delivery.

Jerry McBride 30 days ago

The filter has been perfect for my needs. I couldn't ask for any better and the customer service has been great. I recently experienced a shipment delivery problem where the delivery box was smashed and crushed-in. Inside the box were two filters that were damaged. I informed customer service, displaying pictures of the damaged box and the filters, and they sent me an entire replacement shipment and had me throw out the damaged filters, all at no additional cost to me. I shall always be using Discount Filters for my system needs.

LEE E THOMAS 30 days ago

good product

S Meadors 8 days ago

Great product, fast shipping. Thanks

Patrick Tanner 8 days ago

These are very high quality air filters.If you buy them singly at a big box store,they are easily $30.A two pack brings that price down,and delivered.

Tara Stafford 14 days ago

Filters arrived promptly and is a perfect match for our home. This item was well priced and I will buy from this company in the future.

Valued Customer 18 days ago

Good Product and a great price. Hard to get the higher MERV numbers locally so this was very helpful.

Joan Nelson 29 days ago

Filter fit perfectly after I had ordered the wrong size. Contacted customer service for advice. They refunded my mistake and guided me to the correct item. Very Good!

David Gunther 2 days ago

Seems to work fine, but the 2 I bought were a year's supply. Please notify me with your next sale.

Cynthia Bonacci 10 days ago

Just as ordered! Great price!!!! Totally recommend to make your filter purchases here!!

James S. 10 days ago

Have been using these high quality filters for about 3+years now, and they're always correct fit, and save me many $ over OEM replacementrs.

Jerry Towers 11 days ago

Fit right in the Top Tech filter holder, have had problems with other filters fitting this filter holder, but this one fit perfectly.

John English 23 days ago

Really good filter, price, and service. Highly recommend this company. JE

Steve Rigdon 26 days ago

Great quality furnace filter- quick shipping- very pleased and will reorder

Blaine Mueller 9 days ago

I’m very happy with the filters that I got They arrived quickly but on package had been crushed making the filters unusable I contacted customer service. They shipped an other package that day they arrived with no problems. Very happy will be ordering from this company again

Margarita Gomez 17 days ago

Customer service is prompt and excellent!

Don Andersen 19 days ago

Can un damage and seems to be performing fine

keith myrick 21 days ago

I finally got around to installing my top tech filter I am very pleased with this product and the price. Keith M

Ccleri 27 days ago

We try and get all our filters here. The customer service is excellent and product ships right away.

Augusta Gold 23 days ago

Have been buying from discount filters for sometime now very pleased with the product in the price

Jeff Hatton 7 days ago

Dimensionally a bit small, but will serves the purpose for a cheap filter.

John 10 days ago

Best and only place to purchase these size filters! Perfect fit every time!

Kevin Walls 11 days ago

Love the filters ! All of our residents just LOVE the filters, the price is exceptional and perfect fit to our HVAC systems. Exceptional Customer service and Delivery timing. We will be ordering again !

Robert A. Bonnette 5 days ago

great filter great price!

R McCorkle 4 days ago

Difficult to find replacement for TopTech/TechPure TT-MAC-2522 unit TT-FM-2025 filter Nominal Dimensions 20 x 25 x 4" Actual Dimensions 19-3/8" x 24-3/8" x 3 -3/4" Better than the one that came with the unit. These are NOT the QuickBox "some assembly required". These are ready to install. They slide in very easily.

Raymond Laird 19 days ago

Better product at a savings of over $250.00. Replacement for OEM from HVAC company is over $80.00 per filter.

Rita Cappelletti Jung 20 days ago

Great price ! I usually change the filter twice a year now I can do it quarterly.

TRACY 18 days ago

ordered filters that were hard to find locally without be extremely expensive these were great..

Bonnie Smith 2 days ago

Filter was a perfect fit!!

JEFF MAKER 29 days ago

Absolutely no problems. Saved money, product shipped on time and the whole process was easy.

Walt Harris 8 days ago

Order process was easy, filter fits and functions as the original, but at half the price I was paying the heating/air company servicing my HAV. Very hard to fine this size in the local "big box" stores

Darryl Austin 11 days ago

Perfect fit...excellent pricing!!!

Replaces These Filters:

National Filter Sales:	20x25x4 PF-02-202504TT-2
TopTech:	TT-FM-2025 TT-FM-2025QB

Fits In These Systems:

TopTech:

TT-MAC-2025

TT-MAC-2129

TT-MAC-2522