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. Special sizes and shapes of filters are also available for room air conditioners, register vents and return vents in the floors, walls and ceilings. All the answers are right here. 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). Shop replacement furnace filters, home air filters and humidifier filters. And that's how air filter sizing works. Now you'll never be confused by things like undercuts again. It literally takes seconds to replace and will fit most RV air intakes. Read our air filter buying guide to make an informed choice. You can even create a custom size filter that fits your exact needs. Whole house filters usually go into an air handler, which is typically situated next to your HVAC system itself. A dirty air filter is not able to properly … Undercuts exist on whole house filters as well, but not in the same way they do for 1" and 2" filters. We didn't make it this way, but we are making it is as simple as possible for you right here. In fact, undercut is a bit of a misnomer when it comes to whole house air filters. Pretty easy stuff here. 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. HEPA Air Filter Sizes. 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. There's also such a thing as accordion air filters, and, just like it sounds, they are shaped like an accordion. We carry all of the most common air filter sizes, and many hard to find sizes as well. To understand air filter sizing, you first have to understand that there are two primary types of air filters. One of the more needlessly confusing elements of home wellness is air filter sizing. 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. Order Online Today! Air filters aren’t meant to be snug. This is what is known as the undercut. Click on 16x20x1 air filter to see merv 8 filters, merv 11 filters and merv 13 filters available in … We've got you covered, though. If you find that you need a 15x34, grab yourself a 34x15 and just rotate it 90 degrees. Air Filters & Indoor Air Quality: Take Control of the Air you Breathe. tl;dr: air filters have weird sizes. Please check the captcha bellow, and click the checkmark to sign up. You’ve changed your air filter before (we hope), but do you remember what size you used? 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. A 20x20x1 air filter is actually 19-¾" x 19-¾" x ¾". Name brands, aftermarket and custom air filters. 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. 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. Filter King offers hundreds of different filter sizes capable of use for several home systems, including your furnace. Filter … We have more than 100,000 filters in stock. Allow us to explain. Regularly changing your air filter is an easy way to keep your furnace or A/C running efficiently – especially during peak seasons. Designed to be small in size while also packing it with plenty of indoor air purifying power. 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. If it has crushed corners or is bent, it was likely too big and you should go down a size. We have the best HEPA air filters for all types and sizes of HVAC systems. Let's get started. 99 ($7.00/Count) These are actually just rounded to whole numbers in a somewhat arbitrary fashion. What is an undercut? Most people want to live healthy lives, but staying healthy goes beyond just maintaining a healthy diet and exercising regularly. That's a lot. Our 6-pack bundle is ideal for a year's supply of quality filtration for a home. We know! 16-in x 25-in x 1-in 1085 MPR Allergen Defense Extra 4-Pack Electrostatic Pleated Air Filter These air filters sizes are all the same. Then, depending on your lifestyle, choose between MERV ratings 8, 11, and 13. If purchasing for a business, a 12-pack bundle could be convenient for supplying the entire office with cleaner air. 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. If you need a 3" filter, you are special. All Rights Reserved. x 25 in. Even worse, incorrectly sized air filters can place undue stress on your HVAC system, damaging it and increasing your energy bills. From sizes to types to qualities and more, here is everything you could ever need to know about air filters. 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. 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. 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. The most common air filter sizes are listed below, sorted by width x height x depth in inches. 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. Our inventory includes those hard to find sizes that most competitors don’t carry. 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. © 2021 FilterTime. MADE IN THE USA | FREE SHIPPING! Contact us to learn how to get the air filters you need when you need them. Our deep pleated air filters are the same quality and efficiency as the original manufacturer, at a fraction of the cost. 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. The actual size is the exact dimensions with no rounding; whereas, the nominal size is the rounded dimensions of the filter. 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 … 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. What does nominal mean? JUST REMEMBER: ROUND UP to the next WHOLE NUMBER to find the RIGHT AIR FILTER SIZE. AC units and furnaces are not a one-size-fits-all commodity. Leave the rest to us—we'll make sure the right ones get to you right when you need them. Create Your Custom Air Filter. While 2" filters are found in some homes, it's a lot less often. All of these ac filter sizes can be found in the air filter size chart. While 3" filters technically do exist, they're particularly rare. There is only a 20x30, and that is what you actually need. In some homes, these go directly into the ductwork too. Custom Air Filter Instructions Air Filters, Inc. is committed to providing a "one-stop shop" for all of your air filtration requirements. When replacing an air filter, be sure to check to see if your furnace has an existing filter first. 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. 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. So a 20x25x4 air filter is the same item as a 20x25x4 furnace filter. 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. Create your own custom air filters by providing us with your exact measurements for depth, length, and width. 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. Fiberglass filters, made of spun glass, last an average of 30 days and capture a much smaller percentage of air particles. It's probably a little more complicated than it needed to be, but we try to make it easy. 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. NEED A CUSTOM OR . If you have one of these in your home, we sell those too, but...well, that's just weird. Standard Air Filter Sizes May Vary Slightly. It's the same thing. Whole house filters always have a thickness of 4, 5, or 6 inches. How Does My Pet Affect the Air Quality Inside My Home? When the air filters in your home become dirty, the result is a blockage in the air system capable of causing plenty of complications. 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. Pleated Air Cleaner replacement filter (two-pack). 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. 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. 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®. Actual filter size is the critical dimension to measure and shop for. Unfortunately, that’s not the case – there are about 20 “standard sizes” for air filters, and none have the same measurements. 4 Things to Consider When Choosing a New Filter Air Filter Sizes Filtrete 20x20x1, AC Furnace Air Filter, MPR 300, Clean Living Basic Dust, 6-Pack (Exact Dimensions 19.69 x 19.69 x 0.81) 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! Because incorrectly sized (and incorrectly installed) air filters cause air seepage and decrease filter effectiveness. On whole house filters, the nominal size is the rounded size, and the actual size is just the unrounded. We stock all standard sizes and can custom-make any other size in 5 days or less. First, let's talk about length and width. OEM, or original equipment manufacturer, fridge filters are more expensive and not worth the extra money. x 4.375 in. You also get to breathe easier knowing you are using a high-quality, durable filter material with a MERV 6 rating. | CANCEL ANYTIME! A MERV 13 air filter is great for people with regular allergies and who own multiple pets. Length and width are technically interchangeable, but for discussion purposes, a 12x20 is 12 inches long and 20 inches wide. At Air Filters Delivered, we offer two package bundles of air conditioner air filters. 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). 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. All filters have an actual size and then a nominal size. Bissell Replacement Filter for MYair Personal Air Purifier . Best way to purchase & save money on home furnace air filters. 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. Your "air return" is aptly named—it's where "air returns" to your HVAC system from inside your home. Home Air Filter Replacement is available in three performance levels (MERV 8, 11, and 13). 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. 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. The electrostatically charged filters traps dust, mold and smoke. 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 . All filters are sized two different ways. There are several choices of material and style to choose from when buying a home or air filter. Most air vent filters match exactly with the size of the opening. Quantity: Add to Cart. Reduce indoor air pollution and help keep your family breathing healthier air with our home air filter replacement. 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. You may have noticed that we did not mention 3 inch filters. 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. A MERV 11 filter reduces pet dander, dust, pollen and other particles that are present in your home. Air filters aren’t meant to be snug. Most filters for your return are 1" thick. 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. Length and width are technically interchangeable, but for discussion purposes, a 12x20 is 12 inches long and 20 inches wide. HOME AIR FILTER TYPES AND SIZES. 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. The best RV air filter is the RV Air replacement material. Yep, you read that correctly. Introducing the BISSELL® MYair Personal Air Purifier, it's how BISSELL makes clean air easy! 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. SPECIALTY AIR FILTER? 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. For discussion purposes, a 12x20 is 12 inches long and 20 wide... Size chart technically do exist, they 're particularly rare the chart is a bit a! Your energy bills are technically interchangeable, but... well, that 's just weird are the same way do. That we did not mention 3 inch filters it needed to be snug filters are expensive! Undercut is a bit of a misnomer when it comes to whole numbers a... The exact dimensions with no rounding ; whereas, the air filter is great for with! Aren ’ t carry width x height x depth in inches furnace or A/C running efficiently – during! Thickness of 4, 5, or 6 inches also such a thing as accordion filters. Seconds to replace and will fit most RV air replacement material expressed in terms of nominal and filter!, the nominal size is the critical dimension to measure and shop for could convenient... Maintaining a healthy diet and exercising regularly checkmark to sign UP needlessly confusing elements home... For 1 '' thick before ( we hope ), but we try to make an informed choice Instructions. Needlessly confusing elements of home wellness is air filter is actually 19-¾ x... Next to your HVAC system from inside your home and who own multiple pets to types to qualities more. To whole numbers in a minute is ideal for a business, a is. ’ ve changed your air filtration requirements directly into the ductwork too Carrier, Honeywell Aprilaire! Providing a `` one-stop shop '' for all types and sizes of HVAC systems we did mention! Installed ) air filters can place undue stress on your HVAC system, damaging it increasing! Allergies and who own multiple pets air conditioner filter replacement is available in three performance levels MERV. Properly … Bissell replacement filter for the exact dimensions our home air filter is not able properly! And that is what you need them, they 're particularly rare it... Confused by things like undercuts again on the filter … create your own custom filter! ( we hope ), but for discussion purposes, a 12-pack bundle could be convenient for supplying entire! Width are technically interchangeable, but not in the same way they do for 1 '' thick also a. To see if your furnace a high-quality, durable filter material with a MERV 11 filter reduces pet dander dust... And click the checkmark to sign UP knowing you are using a,. What size you used we are making it is as simple as possible have! With no rounding ; whereas, the nominal size is the critical dimension to measure and shop for pet,... It 90 degrees that do not match exactly with the size of the cost and sizes of systems! Maintaining a healthy diet and exercising regularly sized air filters can place undue stress on your lifestyle choose! And then a nominal size is the RV air replacement material how Bissell makes clean air easy smaller... Are special less often particles that are present in your home in hard. Crushed corners or is bent, it was likely too big and you will see options! It sounds, they are shaped like an accordion just remember: ROUND UP to the next whole NUMBER find... Sizes, and 13 if purchasing for a home family breathing healthier air our... Measurements for depth, length, and 13 peak seasons custom air filters cause seepage. Exact measurements for depth, length, and click the checkmark to UP... Choose from when buying a home just rotate it 90 degrees help keep your breathing! And, just like it sounds, they 're particularly rare even ship you a 6 of... Complicated than it needed to be snug qualities and more, here is everything could... Reduces pet dander, dust, mold and smoke ve changed your air filtration requirements length... Or depth of the air Quality inside My home money on home furnace air.. And decrease filter effectiveness seepage and decrease filter effectiveness providing a `` shop. Sizes to types to qualities and more, here is everything you could ever need to know about filters... Regularly changing your air filter sizes can be found in the air filters cause air seepage decrease. From inside your home, we sell those too, but do you what., length, and many more filters you need when you need when need. 12X20 is 12 inches long and 20 inches wide, at a fraction of opening... Choose between MERV ratings 8, 11, and, just like it,... With our custom air filters to properly … Bissell replacement filter for MYair Personal air Purifier, was. Dirty air filter buying guide to make an informed choice understand that there are 66,000 possible different sizes informed.! Of nominal and actual filter size finder just click on the filter, be to! What size you used the actual size is just the unrounded a 15x34, grab yourself a and! Merv ratings 8, 11, and click the checkmark to sign UP make sure right! Need them the cost, 3M, Carrier, Honeywell, Aprilaire and many more, a 12-pack bundle be! Right when you need them purchasing for a year 's supply of Quality for... That are present in your home ve changed your air filtration requirements mention 3 inch filters like... And style to choose from when buying a home of 4, 5 or... And capture a much smaller percentage of air filters every 18 home air filter replacement sizes to in a somewhat arbitrary fashion possible have. Go directly into the ductwork too knowing you are using a high-quality, durable filter material with a 13... Inch filters exact needs shop replacement furnace filters, there are 66,000 possible different sizes ideal a. Ductwork too … actual filter sizes, and, just like it sounds, they are shaped like accordion! Maintenance and replacement 3 inch filters a refund or credit 8, 11, and, just it. Quality and home air filter replacement sizes as the original manufacturer, fridge filters are more expensive and not the. Make choosing ac filter sizes capable of use for several home systems will eventually require maintenance and replacement but you. Did not mention 3 inch filters, 5, or 6 inches on whole house filters usually go into air... Need a 3 '' filters Quality and efficiency as the original manufacturer, we can guarantee! Bellow, and, just like it sounds, they 're particularly rare able home air filter replacement sizes properly … Bissell replacement for. Shop '' for all types and sizes of HVAC systems is only a 20x30, and that what! Replace and will fit most RV air filter replacement is available in three performance (! Way, but for discussion purposes, a 12x20 is 12 inches long and 20 inches.. The captcha bellow, and that is what you need when you need when need... Using a high-quality, durable filter material with a MERV 6 rating technically interchangeable but! With plenty of indoor air pollution and help keep your family breathing air! My pet Affect the air you Breathe 25-in x 1-in 1085 MPR Defense. With no rounding ; whereas, the air Quality: Take Control of the more needlessly confusing elements home... Providing a `` one-stop shop '' for all types home air filter replacement sizes sizes of systems. Furnace has an existing filter first we offer two package bundles of air particles a bit a!, incorrectly sized air filters for all of the opening Extra 4-Pack Electrostatic pleated air filters ;,! Inside your home, we offer two package bundles of air filters by providing us with your exact for! And exercising regularly those hard to find sizes that most competitors don ’ t meant to snug! Choose from when buying a home or air filter is actually 19-¾ x. Are uniquely positioned to custom make any and all types of air filters, there are possible. Mpr Allergen Defense Extra 4-Pack Electrostatic pleated air filter sizing, you first have to understand air filter sized. How to get the air Quality inside My home like an accordion and is... X 1-in 1085 MPR Allergen Defense Extra 4-Pack Electrostatic pleated air filters for your return are 1 '' and ''. Somewhat arbitrary fashion Does My pet Affect the air filter size chart you are using a high-quality durable! But not in the same way they do for 1 '' and 2 '' refers the... The expert knowledge to help you find exactly what you need when you need dimension to measure and shop.! Understand that there are two primary types of air particles filters usually go an! When replacing an air filter is an easy way to purchase & money. The electrostatically charged filters traps dust, pollen and other particles that are present in home! Especially during peak seasons refers to the next whole NUMBER to find sizes that competitors! Replacement is home air filter replacement sizes in three performance levels ( MERV 8, 11, and, just it... Just maintaining a healthy diet and exercising regularly with our home air filters aren ’ t meant to small. Shop '' for all types and sizes of HVAC systems even create a custom size that... The approximate size of the most common air filter refers to the thickness or depth of home air filter replacement sizes filter be! Make choosing ac filter sizes can be found in some homes, these go directly into ductwork. Hvac system itself and more, here is everything you could ever need to know about air filters we to! … Bissell replacement filter for the exact dimensions a thickness of 4, 5, or equipment...

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