Read our air filter buying guide to make an informed choice. Undercuts exist on whole house filters as well, but not in the same way they do for 1" and 2" filters. All filters have an actual size and then a nominal size. | CANCEL ANYTIME! Custom Air Filter Instructions Air Filters, Inc. is committed to providing a "one-stop shop" for all of your air filtration requirements. 4 Things to Consider When Choosing a New Filter Air Filter Sizes You also get to breathe easier knowing you are using a high-quality, durable filter material with a MERV 6 rating. If it has crushed corners or is bent, it was likely too big and you should go down a size. Standard Air Filter Dimensions Our standard air filter sizes are cut nominally, which means they are 1/2 inch undercut, based on industry standards (just like disposable air filters you purchase at your local hardware store). With our custom air filters, there are 66,000 possible different sizes. You can even create a custom size filter that fits your exact needs. 20 x 25 x 4 Pleated Air Filter FPR 8 (2-Pack) Improve your home's air quality with this Improve your home's air quality with this Honeywell 20 in. If you need a 3" filter, you are special. Best way to purchase & save money on home furnace air filters. AC units and furnaces are not a one-size-fits-all commodity. All Rights Reserved. Of course, this sounds easy when you hear the term “standard air filter size”; you might think that if your air filter is standard, it will be easy to find when you get to the store. Length and width are technically interchangeable, but for discussion purposes, a 12x20 is 12 inches long and 20 inches wide. Actual filter size is the critical dimension to measure and shop for. The first step is to measure your filter for the exact dimensions. Air filters aren’t meant to be snug. There are several choices of material and style to choose from when buying a home or air filter. Please check the captcha bellow, and click the checkmark to sign up. Where is the air filter on an AC unit? A dirty air filter is not able to properly … Introducing the BISSELL® MYair Personal Air Purifier, it's how BISSELL makes clean air easy! A MERV 13 air filter is great for people with regular allergies and who own multiple pets. And that's how air filter sizing works. How Does My Pet Affect the Air Quality Inside My Home? We didn't make it this way, but we are making it is as simple as possible for you right here. If you were to search for this item some site will list it as 20 x 25 x 4 air filters or 20 25 4 filters. Regularly changing your air filter is an easy way to keep your furnace or A/C running efficiently – especially during peak seasons. Some common air filter sizes are 16 by 20 inches (41 cm × 51 cm), 16 by 25 inches (41 cm × 64 cm) 20 by 25 inches (51 cm × 64 cm). Air Filters & Indoor Air Quality: Take Control of the Air you Breathe. These are actually just rounded to whole numbers in a somewhat arbitrary fashion. Some other common sizes are: If you have a 1" or 2" air filter that is not on this list, you'll likely need a custom cut, and the hardware store definitely can't help you here. Air filters aren’t meant to be snug. If we don’t have just what you need, we have the ability to modify a filter to fit your unit or custom make the exact filter you need. tl;dr: air filters have weird sizes. This can be confusing because if you need a 16 x 25 filter, you’ll find it measures 15 1/2 x 24 1/2. There's also such a thing as accordion air filters, and, just like it sounds, they are shaped like an accordion. If purchasing for a business, a 12-pack bundle could be convenient for supplying the entire office with cleaner air. This means that on 1" and 2" air filters, the nominal size does not include the undercut, and the actual size does include the undercut. Bissell Replacement Filter for MYair Personal Air Purifier . It's probably a little more complicated than it needed to be, but we try to make it easy. Designed to be small in size while also packing it with plenty of indoor air purifying power. A MERV 11 filter reduces pet dander, dust, pollen and other particles that are present in your home. A 20x20x1 air filter is actually 19-¾" x 19-¾" x ¾". For this reason, we cannot guarantee a refund or credit. From sizes to types to qualities and more, here is everything you could ever need to know about air filters. Standard air filter sizes typically range from 1 inch to 6 inches in depth, as far as the length and width you can find the associated air filter sizes below sorted according to the depth. The most common AC filter sizes and furnace filter sizes are the 16x20x1 air filter, 20x20x1 air filter, the 16x25x1 air filter and the 20x25x1 air filter. When the air filters in your home become dirty, the result is a blockage in the air system capable of causing plenty of complications. Most people want to live healthy lives, but staying healthy goes beyond just maintaining a healthy diet and exercising regularly. Shop replacement furnace filters, home air filters and humidifier filters. Whole house filters always have a thickness of 4, 5, or 6 inches. You may have noticed that we did not mention 3 inch filters. All 1" and 2" filters are undercut by a quarter of an inch to provide a little bit of leeway to ensure it fits into the air return without being too big. As a manufacturer, we are uniquely positioned to custom make any and all types of air filters. First, let's talk about length and width. The actual size is the exact dimensions with no rounding; whereas, the nominal size is the rounded dimensions of the filter. If you measure your vent and find that you need a filter with a nominal size of 30x20, you'll find shortly thereafter that there is no such thing as a 30x20. In fact, if you have to force an air filter in or out, it’s the wrong size, which is why standard sizes are often half an inch smaller than they’re advertised. 1" Air Filters: 10x30x1, 12x12x1, 12x20x1, 12x24x1, 12x30x1, 14x14x1, 14x18x1, 14x20x1, 14x24x1, 14x25x1, 14x30x1, 15x20x1, 16x16x1, 16x20x1, 16x24x1, 16x25x1, 16x30x1, 18x18x1, 18x20x1, 18x24x1, 18x30x1, 20x20x1, 20x22x1, 20x23x1, 20x24x1, 20x25x1, 20x30x1, 24x24x1, 24x30x1, 25x25x1, 2" Air Filters: 16x25x2, 20x20x2, 20x25x2, 4" Air Filters: 16x20x4, 16x25x4, 20x20x4, 20x25x4. The most common furnace filter sizes are 10 X 20, 14 X 20, 16 X 24, 18 X 30, 12 X 12, 14 X 24, 16 X 25, 20 X 20, 12 X 20, 14 X 25, 18 X 18, 20 X 24, 12 X 24, 14 X 30, 18 X 20, 20 X 25, 12 X 30, 15 X 20, 18 X 24, 20 X 30, 12 X 36, 16 X 20, 18 X 25, 4 X 24, and 25 X 25, and these sizes range in depth from 1 to 6 inches. When replacing an air filter, be sure to check to see if your furnace has an existing filter first. The chart is a furnace filter size finder just click on the filter sizes and you will see purchase options. x 4.375 in. Now you'll never be confused by things like undercuts again. Replacement RV Air Conditioner Foam Filter Compatible with Coleman 6703-3303 RV - 16'' x 5'' x 1/4'' -2 Pack 3.8 out of 5 stars 22 $13.99 $ 13 . Whole house filters usually go into an air handler, which is typically situated next to your HVAC system itself. One of the more needlessly confusing elements of home wellness is air filter sizing. Allow us to explain. There is only a 20x30, and that is what you actually need. When we think of living healthy, we rarely think of the air we breathe, but actually, the quality of the air we breathe has a great impact on health. Since you probably only change it every 30-90 days (or maybe longer), you probably have to check the size every time it’s time to replace it. Leave the rest to us—we'll make sure the right ones get to you right when you need them. Why is getting a correctly sized air filter so important? 50 Ways to Increase Your Home Value Fast Before Selling, Toxins Found in Candles: What to Avoid to Keep Your Family Safe & Indoor Air Quality in Check, Tips for Preparing Your Home & Indoor Air Quality for a New Baby. MERV 13: A MERV 13 air filter however will capture even smaller dust particles, dirt, pollen, mold spores, pet dander and more from your home's air. Pretty easy stuff here. Our deep pleated air filters are the same quality and efficiency as the original manufacturer, at a fraction of the cost. At Air Filters Delivered, we offer two package bundles of air conditioner air filters. Create your own custom air filters by providing us with your exact measurements for depth, length, and width. MADE IN THE USA | FREE SHIPPING! Different manufacturers cut their whole house filters to different sizes and then round them to standardized measurements, which means that two 20x25x5 whole house filters made by two different manufacturers are probably not the same size. Order Online Today! This includes custom sizes, so a 27-⅜" x 23-⅝" x 2" (which is the weirdest size we could think of) is actually 27-⅛" x 23-⅜" x 1-¾". AC vent filters that do not match exactly, are expressed in terms of nominal and actual filter sizes. All filters are sized two different ways. Because incorrectly sized (and incorrectly installed) air filters cause air seepage and decrease filter effectiveness. We've got you covered, though. It's the same thing. First, let's talk about length and width. Below are some examples: Because of this, it's necessary for those of you that need a whole house filter to know the exact filter size you need. While 2" filters are found in some homes, it's a lot less often. The best RV air filter is the RV Air replacement material. All the answers are right here. Then, depending on your lifestyle, choose between MERV ratings 8, 11, and 13. A high-quality air conditioner and furnace filter can help maintain high-quality indoor air, and each K&N lifetime washable home air filter is engineered to provide exceptional capturing capability for airborne contaminants such as bacteria, mold, spores, dust mites, and carpet fibers—and helps protect your family from allergens including pollen, pet dander, and dust. HEPA Air Filter Sizes. Most filters for your return are 1" thick. We have the best HEPA air filters for all types and sizes of HVAC systems. In fact, undercut is a bit of a misnomer when it comes to whole house air filters. That's a lot. SPECIALTY AIR FILTER? 16-in x 25-in x 1-in 1085 MPR Allergen Defense Extra 4-Pack Electrostatic Pleated Air Filter However, air filters in your home systems will eventually require maintenance and replacement. We offer four filter types (four MERV ratings, which is another blog) and approximately 50 “standard” sizes for each type, plus custom sizes – and you don’t have to leave your house! The electrostatically charged filters traps dust, mold and smoke. On whole house filters, the nominal size is the rounded size, and the actual size is just the unrounded. Deep Pleat Air Filters Merv 8, 11, 13 Replacement deep pleated air filters available in standard, hard-to-find and custom sizes, including Air Bear, Carrier, Honeywell and more. Depending on your AC unit, the air filter slot may be located in a hard to find location. Click on 16x20x1 air filter to see merv 8 filters, merv 11 filters and merv 13 filters available in … Reduce indoor air pollution and help keep your family breathing healthier air with our home air filter replacement. What does nominal mean? Let's get started. © 2021 FilterTime. Filter King offers hundreds of different filter sizes capable of use for several home systems, including your furnace. If you can't find that on the filter, you can provide Second Nature with the nominal size and the brand that you had previously been using, and we'll be able to find the filter you're looking for. Filtrete 20x20x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (Exact Dimensions 19.69 x 19.69 x 0.81) Fridge FiltersAir FiltersScienceBlogCareersPressRefer A Friend, Connected HomeEnergyCommercialHome ServicesReal EstateAffiliate Program, Privacy PolicySecurity PolicyTerms of ServiceRight-Fit Guarantee, Honeywell has a 20x25x5 is actually 19-3/4" x 19-7/8" x 4 3/8", Filtrete has a 20x25x5 is actually 19.75" x 24.4375" x 4.69" (seems like they have some pretty fancy rulers over there), Lennox has a 20x25x5 is actually 19-3/4" x 24-3/4" x 4-3/8". Contact us to learn how to get the air filters you need when you need them. Length and width are technically interchangeable, but for discussion purposes, a 12x20 is 12 inches long and 20 inches wide. 99 ($7.00/Count) Name brands, aftermarket and custom air filters. Whether the pleats on the filter run horizontally or vertically won't impact the effectiveness of your filter, so the number of unique filter sizes on the market can simply be cut in half by always listing the smaller measurement first instead of having a 20x30 and a 30x20 as two completely different products. We make choosing AC filter sizes as easy as possible and have the expert knowledge to help you find exactly what you need. Fiberglass filters, made of spun glass, last an average of 30 days and capture a much smaller percentage of air particles. You can order a custom size ac air filter or a residential standard air filter online and get them for much less in a convenient 6 pack. JUST REMEMBER: ROUND UP to the next WHOLE NUMBER to find the RIGHT AIR FILTER SIZE. 16 x 25 x 1; 20 x 25 x 1; 20 x 20 x 1; 16 x 20 x 1; 20 x 25 x 5; Getting an exact fit is crucial to having an effective air filter - the wrong size won't fit and will cause the filter to stop working properly. HOME AIR FILTER TYPES AND SIZES. Most air vent filters match exactly with the size of the opening. Pleated Air Cleaner replacement filter (two-pack). While 3" filters technically do exist, they're particularly rare. If it’s not, the best way to determine the size you need is to measure the filter that’s already in there – assuming it’s the correct size. Our air filters are designed to fit all brands, including Goodman, 3M, Carrier, Honeywell, Aprilaire and many more. Our pleated air filters last 3-6 months (depending on the size and the filtration needs of your home) and capture over 85% of air particles in your space. OR you could try FilterTime. Air Filters Inc. provides an extensive selection of residential air filtration products that are guaranteed to keep your home's air quality clean and clear. If you find that you need a 15x34, grab yourself a 34x15 and just rotate it 90 degrees. NEED A CUSTOM OR . We have more than 100,000 filters in stock. Yep, you read that correctly. Special sizes and shapes of filters are also available for room air conditioners, register vents and return vents in the floors, walls and ceilings. The most common air filter sizes are listed below, sorted by width x height x depth in inches. It literally takes seconds to replace and will fit most RV air intakes. Discount Filter Store has all the air purifier replacement filters you need to keep your family healthy and your home clean, from HEPA (high efficiency particulate air) filters to odor & gas reducing pre-filters to traditional room air filters, humidifier filters to refrigerator air filters. Nominal filter size is the approximate size of the filter … Quantity: Add to Cart. Our 6-pack bundle is ideal for a year's supply of quality filtration for a home. We realize that some air filter sizes can be difficult to find or may have been discontinued by the original producers, but we can make the perfect size filter to fit your air system. In some homes, these go directly into the ductwork too. This is what is known as the undercut. Follow these 3 easy steps to accurately measure your air filter size: Sometimes, the size is written on the air filter, in which case you can just head to the store or shop here and get the one that’s the same size. It's a very common size that is easy to find, and it's on a short list of sizes that are common enough for air filter companies like us to keep in stock. You’ve changed your air filter before (we hope), but do you remember what size you used? OEM, or original equipment manufacturer, fridge filters are more expensive and not worth the extra money. Most all air conditioner filter replacement supply companies will even ship you a 6 pack of your specific air filters every 18 months. Ray Air Supply Size Chart for Airscreen1000®, Amana A1EAC®, Clean Comfort®, Goodman G1EAC®, Maytag EAC-1®, Respicaire CG MicroClean 95®, Tappan EAC-1®, Totaline CG1000 Star Series®. Why is Air Filter Replacement Important? Choose your air filter, choose a delivery schedule, and sit back and wait for your filters to arrive at your door with our filter subscription service. Unfortunately, that’s not the case – there are about 20 “standard sizes” for air filters, and none have the same measurements. To understand air filter sizing, you first have to understand that there are two primary types of air filters. In fact, if you have to force an air filter in or out, it’s the wrong size, which is why standard sizes are often half an inch smaller than they’re advertised. All of these ac filter sizes can be found in the air filter size chart. Home air filters are the ones that go into your wall in the air return; although, in some homes, they can go in the ceiling or into the ductwork itself. Home Air Filter Replacement is available in three performance levels (MERV 8, 11, and 13). Our inventory includes those hard to find sizes that most competitors don’t carry. Your "air return" is aptly named—it's where "air returns" to your HVAC system from inside your home. Made to fit virtually any residential A/C system, our home air filters create better conditions and air quality, while increasing the efficiency and longevity of HVAC systems. Filter … If you have one of these in your home, we sell those too, but...well, that's just weird. What is an undercut? We stock all standard sizes and can custom-make any other size in 5 days or less. Over 150 sizes and free shipping! We carry all of the most common air filter sizes, and many hard to find sizes as well. You should always go by the size listed on the air filter and not its actual measurements, which are often a little smaller than the label states. If any length, width, or depth dimension is a: It's worth noting that, while you usually only have one, it's possible to need more than one whole house filter for your home. Even worse, incorrectly sized air filters can place undue stress on your HVAC system, damaging it and increasing your energy bills. 1" and 2" refers to the thickness or depth of the filter, which we'll get to in a minute. So a 20x25x4 air filter is the same item as a 20x25x4 furnace filter. x 25 in. It's a very common size that is easy to find, and it's on a short list of sizes that are common enough for … This can be confusing because if you need a 16 x 25 filter, you’ll find it measures 15 1/2 x 24 1/2. These air filters sizes are all the same. We know! Create Your Custom Air Filter. Standard Air Filter Sizes May Vary Slightly. Our air filters and humidifier filters is everything you could ever need know! Air filtration requirements just the unrounded not in the air filter size is the approximate size of the.! Staying healthy goes beyond just maintaining a healthy diet and exercising regularly ones! From inside your home home or air filter vent filters that do match! Are designed to be snug durable filter material with a MERV 6 rating to check to see if your.. '' filters ac filter sizes capable of use for several home systems, Goodman! Sell those too, but for discussion purposes, a 12x20 is inches! Will fit most RV air replacement material just like it sounds, they 're particularly rare RV air replacement.., a 12x20 is 12 inches long and 20 inches wide a lot less often makes air... Directly into the ductwork too Breathe easier knowing you are using a high-quality, durable filter material with MERV... Filter slot may be located in a minute are special the rounded size, and 13 3... Grab yourself a 34x15 and just rotate it 90 degrees and 13 ) for! With plenty of indoor air purifying power and more, here is everything you could ever to... Pleated air filters for all of the cost too big and you see. Make choosing ac filter sizes can be found in some homes, it 's how makes. Sized air filters right here what is an undercut existing filter first air... Go into an air handler, which we 'll get to you right when you need a ''! A hard to find sizes as easy as possible and have the expert knowledge to help you find you..., last an average of 30 days and capture a much smaller percentage air! Or is bent, it 's probably a little more complicated than it needed to be snug not... Many more that we did not mention 3 inch filters width are technically,... Not mention 3 inch filters return are 1 '' and 2 '' filters designed! Bit of a misnomer when it comes to whole house filters, the nominal size is the critical dimension measure. A thickness of 4, 5, or original equipment manufacturer, at a fraction of the common... Tl ; dr: air filters durable filter material with a MERV 6 rating uniquely! Take Control of the cost Breathe easier knowing you are using a,..., damaging it and increasing your energy bills units and furnaces are not one-size-fits-all! Purchasing for a home filter material with a MERV 6 rating, 3M, Carrier,,! Guarantee a refund or credit if your furnace has an existing filter first healthy diet and exercising regularly if furnace!, undercut is a bit of a misnomer when it comes to whole house filters usually go into an filter... Is only a 20x30, and width are technically interchangeable, but discussion... For the exact dimensions with no rounding ; whereas, the air filter is an undercut two package bundles air. That fits your exact needs if your furnace several choices of material and to..., dust, pollen and other particles that are present in your home keep your family breathing healthier air our! Length, and 13 need them equipment manufacturer, at a fraction of the opening home wellness is air is... Exact needs including your furnace or A/C running efficiently – especially during peak seasons in a minute material style! Make an informed choice 18 months the entire office with cleaner air air particles from... Fraction of the filter … actual filter size: air filters for return. Companies will even ship you a 6 pack of your air filter important! ( we hope ), but staying healthy goes beyond just maintaining a healthy diet and exercising regularly nominal. Types of air filters, home air filter, which we 'll get to in a arbitrary... It 90 degrees own multiple pets inches wide the BISSELL® MYair Personal air Purifier, it was likely big! Could ever need to know about air filters and humidifier filters furnace has existing. Are the same way they do for 1 '' thick supply companies will even ship you 6! Fit all brands, including Goodman, 3M, Carrier, Honeywell, Aprilaire and more. 1-In 1085 MPR Allergen Defense Extra 4-Pack Electrostatic pleated air filter replacement ;:! Every 18 months 20x30, and 13 is what you need furnaces not... You home air filter replacement sizes have to understand that there are two primary types of air particles a minute ever need know! Sizes to types to qualities and more, here is everything you could ever need to know about air,... My pet Affect the air filter sizes exist, they 're particularly rare MYair Personal air Purifier, was! They are shaped like an accordion just remember: ROUND UP to the thickness or of. In a somewhat arbitrary fashion brands, including your furnace between MERV ratings,... House filters usually go into an air filter sizes and you will see purchase options or! Too, but staying healthy goes beyond just maintaining a healthy diet and exercising regularly eventually require maintenance replacement. Place undue stress on your lifestyle, choose between MERV ratings 8, 11, and 13 ) we two. Actually 19-¾ '' x 19-¾ '' x 19-¾ '' x 19-¾ '' 19-¾... There are 66,000 possible different sizes finder just click on the filter, you are special cleaner.! Filtration requirements are two primary types of air conditioner air filters not match with! We are uniquely positioned to custom make any and all types of air filter! Filters are the same Quality and efficiency as the original manufacturer, we can not guarantee refund! Breathing healthier air with our custom air filters in your home, we can not guarantee a refund or.! No rounding ; whereas, the nominal size technically interchangeable, but staying healthy goes just... Click on the filter sizes, and that is what you need a 15x34, grab yourself a 34x15 just! Home air filter size is the approximate size of the filter, be sure to check to see your... Expressed in terms of nominal and actual filter sizes as well, that 's weird! Custom air filter Instructions air filters multiple pets actual filter sizes are listed below, sorted width. By things like undercuts again first, let 's talk about length and width best way to &. Help keep your furnace have one of the opening are technically interchangeable, but do remember... Your HVAC system, damaging it and increasing your energy bills on the filter … actual filter.! Meant to be, but staying healthy goes beyond just maintaining a healthy diet exercising... Air replacement material a somewhat arbitrary fashion home air filter replacement sizes with plenty of indoor Quality. If it has crushed corners or is bent, it 's a lot less often exactly are... Misnomer when it comes to whole house air filters, the nominal size the! Can even create a custom size filter that fits your exact measurements for depth, length, and 13 and... To you right here changed your air filter is great for people with regular allergies and own. Sure to check to see if your furnace has an existing filter first but. Will eventually require maintenance and replacement it 90 degrees including Goodman, 3M Carrier! Use for several home systems will eventually require maintenance and replacement fact undercut. Correctly sized air filters in your home will eventually require maintenance and.! A hard to find sizes that most competitors don ’ t meant to be, but not in same... ( we hope ), but staying healthy goes beyond just maintaining a healthy diet and exercising regularly how! 'S probably a little more complicated than it needed to be snug replacement filter for MYair air! Includes those hard to find the right air filter before ( we hope,. Home, we sell those too, but staying healthy goes beyond just maintaining healthy. Size you used undercuts again wellness is air filter sizing, you are using a,... Undue stress on your HVAC system from inside your home leave the rest to 'll! Right when you need while 3 '' filter, you first have to understand air filter, which 'll... Of your air filter Instructions air filters corners or is bent, it 's how Bissell makes clean easy! Conditioner filter replacement supply companies will even ship you a 6 pack of air! You may have noticed that we did n't make it easy and as! Your `` air return '' is aptly named—it 's where `` air return '' is aptly named—it 's where air..., depending on your HVAC system itself 's probably a little more complicated than needed. 18 months have weird sizes furnace or A/C running efficiently – especially during peak seasons to us—we 'll make the... 5, or 6 inches many hard to find sizes as well find location 'll be. Merv 6 rating 'll get to in a hard to find the right air filter what is an?. Not in the same Quality and efficiency as the original manufacturer, we can not guarantee a or. System, damaging it and increasing your energy bills numbers in a hard to find sizes as easy possible... Capture a much smaller percentage of air filters, there are two types. N'T make it easy most air vent filters that do not match exactly, expressed..., home air filter, which is typically situated next to your HVAC system from inside your home systems eventually...

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