20x25x5 AIRx ALLERGY Replacement for Lennox Model X6673 Air Filter - MERV 11, 4-Pack product image

20x25x5 AIRx ALLERGY Replacement for Lennox Model X6673 Air Filter - MERV 11, 4-Pack

Model: 20x25x5-LX-ALLERGY / Part: #199806

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5 stars

(97)

4 stars

(15)

3 stars

(3)

2 stars

(5)

1 star

(3)

Free Returns
100% Compatibility Guarantee

Replacement for Lennox Model X6673 Filter - 20 x 25 x 5 - 4-Pack

TOTAL $207.74 ( 4 Pack for $0.00 each )

In Stock

2026-05-11

1 Pack -

$67.54

2 Pack -

$111.67

$55.84 each

4 Pack -

$207.74

$51.94 each

FREQUENTLY BOUGHT TOGETHER

Is this the right air filter for you?

If you want to remove the particulate in your household air that causes allergies, this is the filter for you. You won't find this filter in your local "big box store" and you'll probably pay a premium if you purchase it through your contractor. Make it easy on yourself and purchase online. We'll deliver quickly to your front door.

Quality 4-3/8" pleated air filter offers improved filtration and longer service life over common 1" filters
MERV 11 rating means the filter attracts household allergens like dust, pollen, mold spores, and dust mite debris that irritate your lungs
Replacement for the popular Lennox Healthy Climate X6673 - nominal size 20x25x5 (or 20x25x4)
Replace every 6-9 months under normal use
Made with pride in the USA
Fast Shipping and Free Returns on all filters
This filter is not manufactured by Lennox

What does this air filter remove?

What part numbers does this filter replace?

Lennox Healthy Climate X6673, HCF20-10

What air cleaners does this filter fit?

Lennox HCC20-28, Lennox BMAC-20C
Do you want to know about the technical specs?

Nominal Dimensions	20 25 x 5"
Actual Dimensions	197/8" x 24-7/8" x 4-3/8"
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 (123)

Daniel 29 days ago

This product is exactly what I needed for our furnace and at a very reasonable price. A perfect fit and it was at my door the next day. What an incredible company I have found for all my filter needs.

B. George Saloom 4 days ago

Excellent Product and Excellent Company/Support

Rick Moran 6 days ago

Not the first time I,ve bought them.

William B. Atkinson 6 days ago

This item seems lighter weight and just flimsy compared to earlier designs. The actual performance remains to be seen.

Joy Moore 15 days ago

Fit was perfect and price was fantastic

Hawk 3 days ago

Excellent product

John Puzio 19 days ago

One package of two filters was damaged. Both the filters were collapsed inwards. I hope to bend them outwards and use them. This has never happened before.

Richard Kneip 22 days ago

These filters fit my furnace exactly right. No gaps.

Edward V. Velyvis 8 days ago

Serves my needs.

Byron Landry 26 days ago

They always come fast easiest reorder price is more than fair they come not damaged I've been using them for years now never had a problem reliable I'm just glad I found them because what I pay for one from my heating maintenance company service pays for more then two they even have discounts in certain times of year there made in USA and I wouldn't order from anyone else

sharon kay wingert 26 days ago

Efficient!!!

Dave Vonie 13 days ago

Used for years, dependable quality, long lasting

JoAnn Blevins 25 days ago

Great place to order filters from, fast serviceand good prices

g steven snow 14 days ago

Quality filters. excellent customer service.

Colleen Kessler 8 days ago

Quick & Easy on line service

marilyn case 10 days ago

Very good!

Stephen Wilcox 10 days ago

very pleased with these filters.

Mark Rubey 23 days ago

The filter fit perfectly and exactly what I was looking for.

larry morgan 4 days ago

I already left a review

Richard Gammenthaler 8 days ago

Satisfies the need

Erik L. Wallock 6 days ago

Good Product, excellent shipping service, they are a tad bit tight in the height, my unit being a Goodman but using a Lennox sized filter was a bit of a knuckldrill finding the correct filter, but they work.

Ramiro Herrera 25 days ago

Great price, and the item arrived quickly. This is the first time I have used this filter from your company. So far all is really well.

G Michael Barrera 19 days ago

Good Quality works perfectly

Arthur Nitti 16 days ago

Very good filter. Change every 6 months.

Sherwin Wise 24 days ago

They fit my unit Not sure if its my house or filters But after a few weeks I see more dust coming up

Edward V. Velyvis 10 days ago

works really well. easy to install. not one to review things, but your company is very is easy to do business with and ships in a very fast and efficient manner. Thx.

Two thousand eight Honda Pilot 11 days ago

Great products. Fast service. Never any problems!!!

Donald B. Waldron 8 days ago

Too expensive. Will shop for cheaper next time.

Kenneth Foster 8 days ago

Good fit and effective dust collection

BONNIE KUFSKIE 22 days ago

great product great price

Lisa Leszczynski 2 days ago

Perfect alternative to the name brands!

Brian Lavigne 19 days ago

The thick air filters air more efficiently

Dan Clous 20 days ago

The dimensions of the filter where very accurate.

Tony Hall 20 days ago

I must buy it for my furnace.

SHIRLEY BYNUM 13 days ago

Have used this product for several years. Great value!

Alfred Morrow 18 days ago

Great product for price.

stuart mckinnon 5 days ago

Hard to tell but air quality seems improved.

Marie Corless 18 days ago

Very pleased.

Joseph R Blythe 9 days ago

Quick delivery, friendly service and a good product!

Jeffrey Sundem 27 days ago

Very happy with filters and service and very quick delivery

Arnel Greenberg 12 days ago

The 20x25x5 AIRx ALLERGY Replacement Air Filter - MERV 11 does a good job. Although it’s a bit on the pricey side, it is a good filter and lasts six months.

John 17 days ago

The filters are good quality. The only gripe I had there was a hole on each side of the shipping box. I didn’t consider that was their fault. I carefully removed each filter from the box and the filters were still usable.

Ken 11 days ago

Great product but a little costly.

Cheryl Griffith 12 days ago

Great product and always ships fast

Brian Dollar 14 days ago

Perfect replacement filter and great price

Andrew 11 days ago

The filters are doing their job.

James Poch 18 days ago

Fast delivery

Robert A. Scolli 24 days ago

Too bad furnace manufactures don't standardize size of Hight and width and length for these type s filters within the industry, price would drop for sure. Probably get a higher merv rated filter then in competition between manufactures.

George R Bojcuniak 26 days ago

Original order was lost. Reorder arrived 9-10 days after I called looking for tracking FedEx info on the first order.

MICHAEL K FREEMAN 2 days ago

The product arrived quickly and undamaged. The visual quality of the product is not quite the same as the OEM filter, however, I will withhold final judgement until I see how it performs.

Rosalind C. Norenberg 26 days ago

Pleased with these filters! I always reorder my filters when I receive the 25% off coupon codes, Also the shipping time was faster this time , which was very nice! Thank you !

Janine Beaudoin 23 days ago

loved that there was a good sale. These filters are expensive and it's always nice to stock up when there is a sale

Guerino DiMartino 28 days ago

Good Product. Good value.

Don Cox 15 days ago

I thought I was buying what I had in the past, original equipment. This is a generic filter. I would have preferred the original I had purchased in the past. No indication you were shipping something else.

Steve Henson 15 days ago

I’ve been using this filter for 3 years and it works good

Fred B.Green 23 days ago

Excellent service,and quick response. Delievered on time for usage right away.

anthony sardo 2 days ago

Seem to be doing a great job at air filtration

Martha Barry 4 days ago

Beyond the product, the customer service was excellent. With a delay in shipping, I was offered several alternative options and greatly appreciated the care.

Tom Malak 27 days ago

Very happy with the quality of the product and the excellent, fast service.

Larry T Moore 1 day ago

I have been a loyal customer for several years. I expect to be a loyal customer for many years to come. The product quality and price keeps me coming back. Keep up the good work!

Cheryl Griffith 6 days ago

Good product and fast delivery

Thomas G Shelley 17 days ago

I ordered online an within the week I received them.

wayne garrett 25 days ago

Quality, efficient product. Excellent fast service from Discount Filters. Will continue to buy all future filters from them.

customer 22 days ago

Not all filters are the same! I bought this one after the one I bought from a name brand store did not fit! I change this filter every six months and it works well.

Robert Spoonemore 29 days ago

Great value and works well with one minor drawback and that is the cross-hatched pieces catch easily when pulled out to inspect the filter. I can live with that.

Irvn 7 days ago

Arrived with no damage and a perfect fit. This is my second order of these filters and will continue to use these.

David Terre 26 days ago

The filters I got were damaged in the shipping process and most were unusable. This happened twice for the same order. This company was good at replacing damaged goods the first try. After shipping a second time, the filters were damaged again and I just gave up. They need to find sturdy boxes or change shipping companies.

larry hilliard 1 day ago

Good filters, and service and free shipping

Jeff ross 5 days ago

Happy with the product and free shipping

Rick Zila 10 days ago

This filter does not have as many vent ribs as my previous filter. Therefore the air flow surface is less.

Thomas Murray 17 days ago

I have purchased this filter on before and they functioned perfectly. I will continue to purchase these online

B. George Saloom 17 days ago

EXCELLENT PRODUCT FOR ITS SPECIFICATIONS AND PRICE

Ricardo Garibay 8 days ago

AFTER A THOROUGH RESEARCH I FOUND THIS PRODUCT TO MEET ALL MY EXPECTATIONS COMPLETELY. THEY WORK GREAT AND EASY TO REPLACE WITHOUT TO MUCH EFFORT. I WILL BUY THESE FILTERS AGAIN WHEN I NEED THEM.

Jun Chang 11 days ago

Goog replacement for Lennox X6673 at great price.

Rex 20 days ago

Good filter Pricey because of size. 5 one inch thick filters would be less

Dennis Murphy 28 days ago

I feel you could require the supplier to reinforce the filter so it is not so flimsy.

Pamela A Woodson 3 days ago

Does the job for our 2900SF single level home.

Darrell McDaniel 13 days ago

easy to install. perfect fit.

Yoshinobu Hasegawa 19 days ago

Highly recommended by the contractor who installed the heating/air conditioner.

Patrick Maloney 6 days ago

Great product!

Dale Biesenthal 7 days ago

I have already been asked to review my order of filters and did so. I am very happy with the quality and price of the filters. Its the way they are shipped that doesn't make since to me. They are sent from the factory in Indianapolis Indiana to Champaign Illinois(pass Springfield Illinois) to St. Louis Missouri then back to Springfield Illinois and last to New Berlin Illinois which is about 10 miles west of Springfield Illinois. I will still order more when I need them.

Jeffrey Wilkowski 17 days ago

Hard to find this filter in stores. Thanks for carrying it. Jeff

Jay Schmalfeldt 19 days ago

My wife is asmatic and will be very helpful for her!

Nancy Propst 25 days ago

Nice product for a terrific price! This is a really great company to order filters from and I will definitely use them again!

Larry Eckert 0 day ago

Received my second order of furnace filters and they are good quality and cost about half of what my HVAC company charged.

Bruce Walker 18 days ago

I ordered the wrong size 24x20x4 instead of 25x20x4. When I called to reorder I was told the correct size would be sent at no cost to me, frt free and I could give the wrong ones away. Thats over the top customer service.Kudos. All my neighbors will hear about this and get your company name. Bruce Walker

Richard Rhinehart 21 days ago

The customer service goes beyond excellent!! I recommend Discount Filters to everyone needing a filter. My experience with Discount Filters has been wonderful!!

Betty Causey 23 days ago

Well, so far so good. To soon to make a comprehensive evaluation of the product. I think this filter is a little better than the previous filters ordered..

Joseph Valerio 27 days ago

The product is great, but I never placed this order. They just showed up. I will be calling to return, I never opened the box. I just put one in and I have another for next time. Cell 610-812-7002.

Val Stephens 4 days ago

Great price,good service, fast delivery

Andrea Leonard 16 days ago

Great company service and products.

William F. Bowles 17 days ago

Great product. great on time delivery.

Robert Edward Ramirez 23 days ago

It is a great filter for such a reasonable pricr

troyne 24 days ago

Definitely filters air better than previous filter. Great product for the price.

jerry cassel 15 days ago

fits good

John 8 days ago

Good product and fit well. The filter frame was a little bent up but still works fine.

Barbara Benwell 1 day ago

I checked, to see if they would fit, right after I received them, and all is fine. I had ordered from another outfit and they were too big. Ordered the correct size, but they would not fit, so I had to send them back. Hope I get my refund, ha So thank you, these are fine!

Larry Eckert 6 days ago

Received filters in timely manner and they ,(1) seem to be working well. Half price vs what my hvoc service was charging.

GERARD S 18 days ago

very good filter for the cost. will continue to use this product and this company

Susan Bradley 9 days ago

Easy way to obtain these filters that can't be found in stores. Speedy service, too!

Robert Keefover 9 days ago

I have not used these filters yet. I purchased them for future use but wanted to take advantage of the discount offered at the time of purchase. I have been buying water filters and air filters from DiscountFilters for several years and have had nothing but a very good experience for each purchase. Keep up the good work!

Kevin Walls 2 days ago

Filters from Discount Filters meet and exceed all t he needs. We provide them to over 200 residents and have had no complaints, no issues to deal with. What can be better - Nothing

Ronald Papke 25 days ago

The product was an exact replacement. Ordering and shipping were a great convenience.

Jeffrey Wilkowski 28 days ago

This is the filter I needed for my new furnace. The price was right and I DoD not have to go running around to the big box stores to find the right filter thanks again Jeff

Wayne H King 22 days ago

Being the world's biggest skeptic,I was doubtful my order would arrive correctly. Now I must eat those words. I was able to track my order & upon arrival inspected/installed in the furnace-fit perfectly. Thanks Discount filters,I will be re-ordering again.

Kevin Walls 14 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 !

David Meschke 2 days ago

The product saves you money

Cathleen Morales 23 days ago

Love having these great filters delivered to my door at such a good price!

Richard Setlak 16 days ago

Excellent product and quick shipping

Kevin J 8 days ago

The filter is just like the old one I took out. These were not in stock at my local store.

Vince Meyer 18 days ago

Product works as it should.

Rick Martin 18 days ago

I purchased these for future use, they were considerably less money than OEM filter from my contractor. I'll know more in the months ahead if hold up as well.

george margosian 21 days ago

The filters were as expected. Delivery on time. I would buy from this company again.

Replaces These Filters:

Lennox:	19L17 HCF20-10 X0586 X6673
National Filter Sales:	20x25x5 PF-02-202505HW-2

Fits In These Systems:

Lennox:

HCC20-28

20x25x5 AIRx ALLERGY Replacement for Lennox Model X6673 Air Filter - MERV 11, 4-Pack

FREQUENTLY BOUGHT TOGETHER

MAX Protection MERV 16 Air Filter - Replaces Honeywell 20x25x5 Filters

Is this the right air filter for you?

What does this air filter remove?

What part numbers does this filter replace?

Lennox Healthy Climate X6673, HCF20-10

What air cleaners does this filter fit?

Lennox HCC20-28, Lennox BMAC-20C
Do you want to know about the technical specs?

Reviews

Replaces These Filters:

Fits In These Systems:

Lennox:

No Instructions Yet.

20x25x5 AIRx ALLERGY Replacement for Lennox Model X6673 Air Filter - MERV 11, 4-Pack

FREQUENTLY BOUGHT TOGETHER

MAX Protection MERV 16 Air Filter - Replaces Honeywell 20x25x5 Filters

Is this the right air filter for you?

What does this air filter remove?

What part numbers does this filter replace?

Lennox Healthy Climate X6673, HCF20-10

What air cleaners does this filter fit?

Lennox HCC20-28, Lennox BMAC-20CDo you want to know about the technical specs?

Reviews

Replaces These Filters:

Fits In These Systems:

Lennox:

No Instructions Yet.

Lennox HCC20-28, Lennox BMAC-20C
Do you want to know about the technical specs?