Standard Stock Size Air Filters

Facts About Standard Sized Air FiltersHave you heard the term “Standard stock size” air filter? This merely means that your HVAC unit has a filter that is a common size that is mass produced and easily found. For example: 16x20x1, 20x20x1, 16x25x1, 20x20x1 are all standard sized air filters. Every unit has a specific sized filter which allows the it to perform correctly and efficiently. Most AC and HVAC units use standard sized filters, but some do require a custom size air filter to be purchased and installed. But why is filter size important? According to EPA.gov, incorrectly sized or installed filter frames can cause air seepage, which significantly decreases filter effectiveness. Also, if there is any air flow resistance caused by using a filter that is not correctly sized, it can result in unnecessary stress on the HVAC unit itself, potentially damaging your system equipment and increasing your energy bills.

Standard Size Air Filter Facts

  1. There are only about 10 of the most common air filter sizes available at retail locations. US Home Filter makes over 80 standard stock sizes that local stores do not have the shelf space for, nor the inventory capacity to keep them in stock. We do manufacture and stock them all because that’s our business! So take a look at our stock filters, from the most common 16x20x1, 20x20x1, 16x25x1, 20x25x1 to other sizes like 8x16x1 to 30x36x2 to 25x29x4 to 20x25x6. If we don’t have it, we can make it!
  2. Nominal Size: This is the approximate size, such as 16x25x1. All 16x25x1 filters are designed to fit standard 16x25x1 filter slots.
  3. Exact Size: This can vary slightly depending on the manufacturer. The die-cuts (filter frames) are manufactured in bulk and purchased as a raw material for making air filters and determine the exact size of the air filters. The exact size is always slightly smaller than the nominal size to allow the filter to properly fit in the slot or housing. For example, a stock size of 20x20x1 may have exact dimensions of 19-1/2 x 19-1/2 x 3/4. This is completely normal and is the standard in air filter manufacturing.
  4. Slight variances in size may make a difference in certain situations. For instance, you may find that the stock size at your local hardware store is just a bit too big to fit your housing slot; however, you may be able to find the same stock size online by a different manufacturer that is slightly smaller size and it fits perfectly.
  5. There are thousands upon thousands of possible exact air filter sizes that can be used in an HVAC unit. Because of this, you will not always be able to find a filter at a store or online as you are able to find regular stock sizes. If this is your situation, you will need to order a custom size air filter. Custom filters are not made to a nominal size, with a smaller actual size as stock sizes are made. At US Home Filter, we make your custom size filter according to your HVAC manufacturers specifications.

Finding the Right Fit

The filters don’t need to fit with an “airtight” seal, but you should be able to easily install and uninstall your filter without a struggle. Your filter should be a bit smaller on each side of the filter housing slot, allowing you to slide the filter in and out with ease. For most systems you can use a standard sized filter within 5/8 of an inch smaller than the air filter housing.

US Home Filter is Here for YOU

Hopefully this information helps you better understand what your AC/HVAC system requires for optimum performance. It’s also important to remember that using the correct size filter for your system protects your AC/HVAC unit from malfunctions and damage, allowing it to continue to perform correctly and keep your air cleaner and your family and home safer. Take a look at our air filter measuring guide for steps on figuring out the correct size filter for your system. If you’re still unsure, US Home Filter is here to help! Call us at 855-237-1673 or contact us online.

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

How to Properly Insert a New HVAC Filter

arrow on air filter for air flowChanging your home air filters seems to be an easy task; however, it’s one that is easily forgotten. Clean air filters matter. It is extremely important to regularly monitor and change them according to the manufacturer’s directions. When air filters become clogged with dust, dirt and debris, they are no longer able to their job of improving the indoor air you breathe. Dirty air filters also force your HVAC system to work harder than necessary, decreasing equipment’s life and increasing your energy bills. In fact, Energy.gov reports that replacing a dirty, clogged air filter with a clean one can lower your central air conditioner or furnace energy consumption between 5 and 15 percent! So, you go to change your air filter, but you end up a little confused. Not really paying attention to small details, you take the old filter out, grab the new filter, but which way does it go in? There’s an arrow on the filter with the words “Air Flow”, but what does that mean? How do you know which way the air flow is going? Here’s what you need to know to properly insert a new filter into your HVAC system.

The Arrow and Air Flow Direction

To properly insert a new filter, look for the arrow! The arrow on your filter should always face the unit and away from the return air duct that carries the air that will be heated or cooled. HVAC systems push the cool or warm air out and pull spent air in, recirculating the air throughout your home. This means you want the spent air that is being pulled in to flow through your air filter before being pushed back out into your home. Still confused? A simpler way to figure this out is to always make the arrows face the ceiling or wall. If your filter is on the wall, the arrow should face the wall. If your filter is on the ceiling, the arrow should face the ceiling.

If you find yourself with an air filter that doesn’t have an arrow on it, check it again, as nearly all filters have it. Still not finding the arrow? In this case you’ll need to look at each side of the filter. The side with the wire frame should be facing outward and the side without it will be inside closer to the unit.

Pro Tip: Once you’ve got it figured out, draw the airflow direction arrow on the HVAC housing or ductwork with a permanent marker. The next time you change your filter, match up the arrows’ directions and viola, you’ve properly changed your air filter.

US Home Filter Carries AC Filters to Fit All HVAC Units

No matter which HVAC system you have, every unit needs a quality filter that fits properly in order to keep your indoor air quality clean and your unit running at its maximum efficiency. US Home Filter can supply you with the best and most efficient HVAC filter available! Changing the filter is as important as changing the oil in your car and US Home Filter makes filters that fit all AC/HVAC units. From standard to custom air filters, to whole-house filtersgrille filters and humidifier filters, we have all of your filter needs covered!

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

Benefits Of Home Air Filters

How Air Filters Work and their benefitsThe list of benefits that come from the use of home air filters can be outlined easily; however, the list contains three very valuable benefits. You may not think about it often but having a full understanding of the true advantages of these relatively simply items will make you realize their importance. Air filters come in a vast number of sizes and several MERV ratings. No matter the size difference or the types available, all air filters are designed to fill these main purposes. The filter size you need is determined by the HVAC unit installed in your home, but there is flexibility in selecting the MERV rating that is best for you regarding desired level of dust control and reduction in allergens. So, what are these three top benefits of home air filters?

Top 3 Home Air Filter Benefits

#1 HVAC System Protection

The lack of maintenance is the most common reason for HVAC system malfunction or failure. Dust is often the culprit as it can build up on the integral parts of the unit. Once the dust has accumulated to a high enough level, there will inevitably be problems. These problems; however, can almost always be prevented by regular maintenance. One of the simplest ways to maintain your system and preserve its life is to use an air filter that fits properly and change your air filter regularly. By doing so, a proper rate of airflow will be circulated around your home so it can be heated or cooled to your desired temperature. This also provides your HVAC system with a protective barrier against dirt and debris; the original and primary reason for home air filter use. Air filters, although inexpensive in comparison to the cost of your HVAC unit, carry a high level of responsibility in keeping your system running efficiently and smoothly. Your air filter traps dust and dirt particles before they can reach and accumulate on the internal and moving components of the unit. The following parts can be contaminated with dust build-up when a poorly-fitting, low quality, or dirty filter is used:

  • fan blade
  • motor
  • coil
  • duct work and vents

#2 Reduction of Dust in Your Home

Your air filter works hard to minimize the dust levels in the indoor air you breathe by preventing dust and debris from collecting on the mechanical parts of your heating and air conditioning system. High-efficiency pleated filters provide a large surface area and a considerable amount of dust-holding capacity. Pleated filters trap and hold several grams of dust, preventing it from blowing through your duct work back into the air you breath and inevitably settling on the surfaces in your home. Battling dust that continues to reappear on bookshelves, tables, window treatments, and decor is a constant point of frustration. Although virtually impossible to eliminate, dust can be greatly reduced by your home’s air filter, assisting you in the fight against dust in your home. US Home Filter recommends a MERV 8 rating at the minimum on your home air filter to control average levels of dust. If you need greater protection from smaller dust particles (fine, suspended dust), then you would benefit from a higher MERV rating. As the MERV rating increasing, finer particles are captured and a higher percentage of dust and microscopic particulate matter (PM) is removed. It is this subject of filtering fine particles, even as small as attached bacteria and viruses, that leads us into the next benefit, a recently popular topic of discussion.

#3 IAQ Improvement

While system protection is the priority and dust reduction is a close runner-up, the importance of air filters related to our indoor air quality (IAQ) is the third on the list of benefits of home air filters. This has become increasingly important as the average person spends 90% of their time in indoor spaces where concentrations of pollutants are 2-5 times greater as compared to the outdoor levels. Wouldn’t you want the cleanest air in the areas where you spend the greatest amount of time? IAQ may be the most important factor in air filtration for those that have serious concerns such as severe allergies and sensitivities to certain particulates and contaminants, perhaps just as important as other items they use, such as allergy medication, to lessen the symptoms caused by allergens. A MERV 8 rating is enough for those that have mild allergies and sensitivities. We recommend a MERV 11 rated air filter when you experience a moderate level of allergy issues. If you are highly sensitive to particulates, pollution, contaminants and various allergenic elements, you should consider a MERV 13 filter which will scrub your air from the finest particles, keeping your air as clean as fresh as possible.

US Home Filter Carries AC Filters to Fit All HVAC Units

No matter which HVAC system you have, every unit needs a quality filter that fits properly in order to keep your indoor air quality clean and your unit running at its maximum efficiency. US Home Filter can supply you with the best and most efficient HVAC filter available! Changing the filter is as important as changing the oil in your car and US Home Filter makes filters that fit all AC/HVAC units. From standard to custom air filters, to whole-house filtersgrille filters and humidifier filters, we have all of your filter needs covered!

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

 

Understanding Air Filters and How to Choose the Right One

How Your Air Filter Work and How to Choose the Right OneThe air filter in your home HVAC unit is a critical component of the whole system. Made from mostly cardboard and fiber, they may not seem elaborate, but air filters greatly affect your unit’s performance. Not only do they play a big role in indoor comfort, but they also have a major impact on HVAC equipment. Here is what you need to know about air filters, how they work, and why they are so important in maintaining your home’s heating and cooling systems. Hopefully, it will also aid you in selecting the right filter to best fit your needs!

How Air Filters Function and Work

Air filters are typically manufactured with one of these two materials: spun fiberglass material or pleated paper/cloth. The material is enclosed in a cardboard frame, then made into different sizes to fit all the various HVAC systems available. The filter’s primary function is to trap and hold all different kinds of particulates and contaminants in the air that circulate through your heating and cooling system. Most of which affect your health and comfort. A few of these contaminants include:

  • Mold & spores
  • Pollen
  • Hair & animal fur
  • Bacteria/Microorganisms
  • Dust and dirt
  • Fibers and lint
  • Metal, plaster or wood particles

The air filtration occurs when the disbursed air is “sucked” back into the HVAC system where it is conditioned and then used again. During this process, air is forced through the air filter. The spun fiberglass or pleated paper/cloth traps the particulates and contaminants, removing them from the air. These particles are now no longer able to be recirculated into the air you breathe.

MERV Ratings and Filter Efficiency

As with almost all products we purchase, there are lower-end, mid-level and high-end choices available. Not all products are created equal. Not all air filters will clean your air with the same efficiency. The higher the quality, the more contaminants that will be removed from your indoor air. Keep in mind that these higher quality air filters are usually cost a bit more.

This is where the filter’s MERV rating comes into the picture. MERV stands for “Minimum Efficiency Reporting Value”. It is a numeric value for rating and comparing the filter’s efficiency and performance. The range for standard MERV values is typically from 1 to 16; the number indicating how well the filter will remove material from the air. The higher the MERV rating, the better the filtration.

MERV 1-4: Common standard filters. Basic filtration. Low cost.
MERV 6-8: Good filtration and typically used in residential settings. Made of cloth or pleated paper.
MERV 9-12: Middle of the road filters with relatively high efficiency. Can trap particles of 1 micron or larger.
MERV 13-16: Highest efficiency, best standard filters available. Can trap particles as small as 0.3 microns or larger.

There are filters available with MERV ratings higher than 16; however, they are thick and dense, and a typical residential HVAC system cannot readily handle them. In fact, they can interfere with the airflow by restricting it. This reduces the effectiveness of your heating and cooling systems and can even result in damage to the HVAC equipment. Make sure that your HVAC system can handle filters with MERV ratings higher than 16 before buying and installing one.

There are also additional units that can be installed along with your HVAC system that are designed for air filtration and purification. These air cleaners provide an additional step “on top” of the regular filtration, cleaning your air even further.

Air Filter Maintenance

All the air that circulates through your HVAC system, to heat or cool your home, will eventually pass through the air filter. Therefore, it is extremely important to keep your air filters clean and change them regularly. Dirty, clogged air filters can:

  • Cause HVAC system malfunctions and equipment damage.
  • Reduce airflow inside the HVAC system, making the fans work harder and wear out quicker.
  • NOT remove particulates and contaminants as effectively as they should, therefore releasing these back into your indoor air (the air that you and your family breathe).
  • Cause contaminates to build up in your duct work.
  • Cause the HVAC equipment to work harder, increasing your home’s energy usage and your monthly electric bill payments.

Air filters should be checked at least once a month. If they are dirty, change them out with a fresh clean air filter. To check if your air filter is dirty, remove it from the air filter and hold it up to a light source. If you can’t see the light through the filter, then it’s time for it to be changed.

US Home Filter Offers AC Filters for Every HVAC System

No matter which type of HVAC system your home has, every unit needs a quality air filter that fits properly in order to maximize your indoor air quality and keep your unit running efficiently. US Home Filter can provide you with the best and most efficient HVAC filter available! Changing the filter in your furnace is as important as changing the oil in your car and US Home Filter offers filters to fit all heating and air conditioning units. From standard to custom air filters, to whole-house filtersgrille filters and humidifier filters, we have all of your filter needs covered!

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

MERV, MPR or FPR?

merv vs mpr vs fpr ratingFilters can be complicated to understand. Some HVAC systems have the recommended type of filter written on a label that is stuck right on the side of the unit. Other systems leave it up to you to decide what filter you want to use. With all the different sizes available, thicknesses, and types, it’s easy to get confused. On top of it, there are acronyms on the filters that are also part of a filter’s rating system. We’ve talked before about MERV ratings, what they mean and how it relates to the filter you buy. But there are two other acronyms that appear on some filters as well: MPR and FPR. This confuses things even more. What do they stand for? How do you make sense of them all when comparing filters? Is one more efficient than another?

MERV vs. MPR vs. FPR Rating

MERV FILTERS

MERV stands for Minimum Efficiency Reporting Value. Developed in 1987 by ASHRAE (the American Society of Heating, Refrigeration, and Air Conditioning), the MERV systems provides standardized ratings consumers can use to compare the effectiveness of the different air filters available. It provides clarity to what level of filtration can be expected from an air filter with a specific MERV rating. In other words, this means that any MERV 8 rated air filter will filter the same as any other filter with a MERV 8 rating.

MERV ratings (ranging from 1-16) score the performance level of a filter in regards to the removal of airborne particles from 0.3-10 microns in size. A micron is the measurement used for airborne particles. One micron is 1/1000th mm which is equal to 1/25,000ths of an inch. The human eye can see particles beginning around 20 microns; however, in perfect conditions, it is at times possible to see particles as little as 10 microns. To put that into a visual, a dot (.) is just about 600 microns.

The MERV system is the only nationally regulated and independent filtration system.

MPR FILTERS

MPR stands for Microparticle Performance Rating. This rating is exclusive to filters that are manufactured and sold by the home improvement brand 3M in partnership with Filtrete. These filters serve the same function as all other filters – cleaning the air being brought into your HVAC system of allergens, dirt and debris before returning the air back into your home.

MPR ratings (ranging from 300-1900) also gauge the size of the particles they will remove from the air, but only from 0.3-1 micron in size. Filtrete (3M) filters are the only filters that carry the MPR rating and there is currently no independent third-party testing available for comparison to MERV rated filters.

FPR FILTERS

FPR stands for Filter Performance Rating. This rating is also exclusive, but to filters that are manufactured and sold by the Home Depot. Unlike MERV and MPR ratings, the Home Depot does not supply a size range for the particles these filters will remove. Instead, filters are assigned an FPR number (such as FPR 10) for the particle removal measurement.

FPR ratings range from 4-10, with FPR 4 being economy filters and FPR 10 being premium filters. The Home Depot does provide a guidance chart to compare the contaminants the filters will remove; however, FPR ratings to not clarify what a large particle is versus what what a small particle is. Home Depot brand filters are the only filters that carry the FPR rating and there is currently no independent third-party testing available for comparison to MERV rated filters.

US Home Filter Carries AC Filters to Fit All HVAC Units

The biggest difference between these ratings is the makers of the filters themselves. Just remember, the most important thing when choosing an air filter, regardless of rating, is that it is compatible with your HVAC system. No matter which HVAC system you have, every unit needs a quality filter that fits properly in order to keep your indoor air quality clean, your unit running at its maximum efficiency, and your energy costs down. US Home Filter can supply you with the best and most efficient HVAC filters available and all are labeled with the nationally regulated MERV rating. US Home Filter makes filters that fit all AC/HVAC units. From standard to custom air filters, to whole-house filtersgrille filters and humidifier filters, we have all of your filter needs covered!

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

Defining the Different Filter Types

How to determine if your air filter type is the correct size for your unitAccording to the EPA, indoor air pollution is among the top five environmental health risks. Making sure your air filter fits properly within your system and regularly cleaned is imperative to keep your furnace or AC system operating properly and protecting indoor air quality. Before ordering or purchasing an air filter, make sure you look at your HVAC unit and measure the space for the air filter to determine the size and type of filter you need. US Home Filter specializes in many different filter types, including AC air filters (for all major brands), Whole House Air Filters, Furnace filters, Grille filters and even Humidifier pads. We offer a vast selection of standard sized air filters, as well as custom sized AC filters. With all the different options available, how do you know which filter type you need? What is the difference between them? Here’s what you need to know.

Filter Type Differences

Air Filters

Air filters are used to protect the vital components of your HVAC system from accumulating dirt and debris. They improve your indoor air quality by capturing and reducing dust and allergens such as mold spores, pollen, pet dander, and even odors. Whether you have central heating and air conditioning or separate heating and cooling units, the same air filter will be used for both. This is because they (typically) share the same air-handler. Standard air filters are 1″ and 2″ in size and need to be changed every 1-3 months. Regularly changing your air filters is also the easiest way to maintain your HVAC unit.

Whole House Air Filters

Another filter type is Whole House Air filters. These filters also work to remove particles from the air, improve indoor air quality and protect your HVAC system. They are also known as also known as Residential Air Cleaners, Media Filters, and Whole House Air Cleaners. The difference between these and regular Air Filters is that Whole House Filters are larger in size and only need to be changed every 6-12 months due to the greater surface area. Any filter 3″ or thicker is designed to be a whole house filter. Their increased filter media also allows for a much higher airflow rate.

Custom Air Filters

Custom air filter sizes are not stocked on shelves or found at local stores. There are tens of thousands of possible size combinations for filters so there is no way to keep each size in stock. However, you can get the exact size you need by building a custom air filter. If you’ve measured your air filter housing slot and are unable to find a standard sized air filter within 5/8th-inch smaller than the housing slot, then your unit requires a custom sized air filter. US Home filter can make custom air filters in 1″, 2″ and 4″ depths.

Grille Filters

Grille filters are used in ceilings, grilles of walls and in the return air vents. They are not used in an air handler like those mentioned above. There should be at least a 7-in depth behind the grille, providing enough space for installation and airflow through the filter. Much like Whole House Air Filters, the increased surface area and depth of Grille filters provide greater airflow and efficiency compared to standard 1-in filters. This filter type should be changed every 6-12 months depending on environmental factors.

Humidifier Pads

Separate from HVAC and grille filters, humidifiers add moisture to your air, counteracting the drying effect that your furnace has during the cold months. Having a humidifier in your home can also help save on energy costs! When you add moisture back into the air it allows the air to feel warmer and more comfortable at a lower temperature. In other words, moist air feels warmer than dry air. On average, you can set your thermostat 2-3 degrees lower when you have a humidifier and achieve the same air temperature that you would without one. Humidifiers help those prone to sinus infections, asthma, allergies, and respiratory conditions. Humidifier pads facilitate the process that disperses moisture into your air. Wick filters, evaporator pads and vapor pads are other common names for humidifier pads.

US Home Filter Carries AC Filters to Fit All HVAC Units

No matter which HVAC system you have, every unit needs a quality filter that fits properly. This keeps your indoor air quality clean and your unit running at its maximum efficiency. US Home Filter can supply you with the best and most efficient HVAC filter available! Changing the filter in your furnace is as important as changing the oil in your car. US Home Filter makes filters that fit all AC/HVAC units. From standard to custom air filters, to whole-house filtersgrille filters and humidifier filters, we have all of your filter needs covered!

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this so our experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection and low prices. Plus, enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

The Importance of MERV Ratings

How Air Filters Work and MERV RatingsMERV stands for Minimum Efficiency Reporting Value. Developed in 1987 by ASHRAE (the American Society of Heating, Refrigeration, and Air Conditioning), the MERV system is a scale used to measure the effectiveness of air filters. With the MERV ratings system in place, consumers are able to easily compare the effectiveness of the different air filters available. Although there may be some differences in the material, quality and construction of air filters, the MERV system provides clarity in what level of filtration can be expected from an air filter with a specific MERV rating. This basically means that any MERV 8 rated air filter will filter the same as another with a MERV 8 rating.

Ranging from 1-16, MERV ratings score the performance level of a filter related to the removal of airborne particles from 0.3-10 microns in size. Used as the measurement for airborne particles, a micron is 1/1000th mm which is equal to 1/25,000ths of an inch. Typically, particles are visible to the human eye beginning around 20 microns; however, in the right conditions, it is sometimes possible to see particles as small as 10 microns. To put that into perspective, a dot (.) is just about 600 microns.

Comparing MERV Ratings

The table below shows a low-level comparison of MERV ratings. Check out our MERV Rating Comparison chart for a more in depth look at the differences.

System Protection Level Dust Control Level Allergy Concern Level
MERV 8 Good Good Mild
MERV 11 Better Better Moderate
MERV 13 Best Best Severe

Buying Filters with High MERV Ratings

Logic would make it seem that you would want to buy a filter with the highest MERV rating possible, right? Oddly, that is not necessarily the case.

You now know that air filters with high MERV ratings means the filter is very effective in preventing harmful airborne particles from circulating throughout your home. However, a high MERV rating filter could also be overly effective which, in turn, can prevent the air itself from being to circulate. This is a bad thing and the result may be poorer air quality in your home. Also, if the air is unable to circulate due to more resistance, your HVAC is doing more work than it should be. The result is an inefficient HVAC system, high energy bills, and it can even lead to costly repairs in the long run.

What MERV Rating Should I Buy?

This really all depends upon your individual HVAC system, but for a typical home the ideal MERV rating would be between 8 and 13. The most important thing when choosing an air filter, regardless of MERV rating, is that is compatible with your HVAC system. You may think that selecting high MERV rating filters will remove more of the harmful particles from your home, but too high of a MERV rating could actually reduce the air quality of the air you breathe in your home. Filters with higher MERV ratings also have to be changed more frequently than those with a lower MERV rating.

Filters with MERV ratings higher than 16 are available, however, they are thicker and denser and your typical residential HVAC system cannot readily handle them. And, as stated before, they can actually interfere with the airflow by restricting it. This in turn could actually reduce the effectiveness of your heating and cooling systems and can even result in damage to the HVAC equipment. You should consult with an HVAC professional to make sure that your HVAC system can handle filters with MERV ratings higher than 16 before buying and installing one.

If you still want the filtration of a MERV 16 but your HVAC system can’t handle it, there are additional units that can be installed along with your HVAC system that are designed for air filtration and purification. These air cleaners can provide an additional step “on top” of the regular filtering, thus cleaning your air even further.

US Home Filter Carries AC Filters to Fit All HVAC Units

No matter which HVAC system you have, every unit needs a quality filter that fits properly in order to keep your indoor air quality clean, your unit running at its maximum efficiency, and your energy costs down. US Home Filter can supply you with the best and most efficient HVAC filter available! US Home Filter makes filters that fit all AC/HVAC units. From standard to custom air filters, to whole-house filters, grille filters and humidifier filters, we have all of your filter needs covered!

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

When to Choose Custom Size HVAC and Air Filters

Custom Air FiltersWhile there are many standard and commonly used air filter sizes, the HVAC industry as a whole has not standardized air filter sizing. Most of the time, air filter sizes are determined by the manufacturer of your HVAC unit, based off the finished size of the unit itself, instead of the standard size air filters available. This can be quite an inconvenience for many homeowners. Some will recommend your focus should be on the type of air filter you use. While this is important, when choosing custom size air filters, your main concern should be determining the exact size you need. The type of filter you use is irrelevant if it does not fit properly. If you’ve measured your air filter housing slot and are unable to find a standard sized air filter within 5/8th-inch smaller than the housing slot, then your unit requires a custom sized air filter.

Custom air filter sizes are not stocked on shelves or found at local stores. There are tens of thousands of possible size combinations for filters so there is no way to keep each size in stock. However, you can get the exact size you need by building a custom air filter. US Home Filter keeps a vast array of standard sizes, including many uncommon hard-to-find sizes, in stock and can make any custom size air filter that you may need!

The Purpose of Air Filters: Why Size Matters

An air filter’s main purpose is to keep the air we breathe as clean as possible. They also prevent atmospheric dust and other airborne particles from building up on heating and cooling system’s fan motor, coil and drip pans. If your air filter isn’t clean, your furnace or AC system cannot operate properly, leading to costly repairs and replacements. It is imperative to ensure your air filter fits your unit properly so the air can move THROUGH the filter, not around it. If you have the wrong sized air filter in your unit, dust, allergens and pollutants will not be filtered from your indoor air, as the air is bypassing the filter, entering into the ventilation and returned back.

This is where custom air filters can be extremely beneficial. Once you have determined the filter size you need, it is important to change your custom air filters on a regular basis. By doing so, you will have a constant flow of clean air coming into your home, avoiding respiratory difficulties, allergies, and illness.

Custom Air Filters Reduce Indoor Air Pollution

According to the EPA, indoor air pollution is among the top five environmental health risks. Making sure your air filter fits properly within your system and regularly cleaned is imperative to keep your furnace or AC system operating properly and preventing indoor air quality. This is where custom sized air filters are essential. As we stated before, the air should move through the filter, not around it, so those indoor air pollutants are caught in the filter.

After you’ve figured out the exact dimensions you need for your custom air filters, then you can choose the type of filter you want/need. This selection will depend on your budget as well as the level of filtration you want. At US Home Filter, we have a step by step process that does just this, helping you find correct air filter dimensions for your HVAC system and we deliver your custom air furnace filters straight to your door!

US Home Filter is Here for You!

A properly fitting air filter is necessary to keep your home safe and the air you breathe clean. It also increases your system’s performance and longevity, decreasing energy bills. There are hundreds of air filter sizes and US Home Filter is here to help you get the correct filter as easily and efficiently as possible. No need to spend hundreds of dollars re-engineering your HVAC system when you can make the exact custom size filter your AC needs. Take the frustration out of ordering custom air filters with affordable prices and quick lead times. Prices start at only $9.49 per filter in our MERV 8 rating! We make all our custom air filters in our own manufacturing facility right here in the USA! See our measuring guide to help choose the right custom air filter size for your application.

Order now from US Home Filter and receive FREE SHIPPING on your order!

No matter which HVAC system you have, every unit needs a quality filter that fits properly in order to keep your indoor air quality clean and your unit running at its maximum efficiency. US Home Filter can supply you with the best and most efficient HVAC filter available! Changing the filter is as important as changing the oil in your car and US Home Filter makes filters that fit all AC/HVAC units. From standard to custom air filters, to whole-house filters, grille filters and humidifier filters, we have all of your filter needs covered!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

How Clean Air Filters Save You Money

dirty air filters vs clean air filtersAir filters may seem like a bit of an investment, especially when some can cost upwards of $20 each. A lot of times, when we purchase higher priced items, we expect them to last longer. The general recommendation is to change your HVAC filter at least once every 3 months, which can equate to anywhere from $40-$80 per year, per HVAC unit in your home. But can clean air filters actually result in saving money? The answer is yes, and here’s why.

Clean Air Filters = Energy Savings

The Department of Energy reports that replacing dirty filters with clean air filters can reduce your energy consumption up to 15%. When you take that and combine it with the fact that your heating and cooling system is responsible for nearly half your energy usage, you could potential save 7.5% each month.

This means that if your energy bill is $100/month, you could save $7.50 on each monthly bill just by changing your air filter! Is your energy bill in the $200, $300, $400 range? You’re looking at even more savings – upwards of $30 every month. So, is it worth regularly maintaining your HVAC system with clean air filters? In this scenario, yes, but there are ways it saves you money as well.

Clean Air Filters and HVAC System Health

Think of your HVAC system as the virtual lungs of your home, working to filter out dust and debris from the air you breathe. Just as when our lungs aren’t able to do their job when in poor health, clogged air filters aren’t able to either and become the leading cause of heating and cooling system problems.

Dirty air filters put strain on your HVAC system and end up using more energy to cool or heat your home. Just like you change the oil in your car every 3,000 miles to keep your car running smoothly, regularly changing your home’s air filters is your first line of defense in protecting your HVAC system.

If your furnace is working harder, the more likely it is to break down or need repairs. HVAC repairs can be very costly, especially if you end up needed a whole new system. Major component repair can cost anywhere between $300-$700, if not more, with a new unit running close to $4,000. So, think of it like this – by spending $40-$80 per month and changing your air filters regularly, you are saving money on energy bills and preventing an even more costly breakdown to your HVAC system.

US Home Filter Carries AC Filters to Fit All HVAC Units

No matter which HVAC system you have, every unit needs a quality filter that fits properly in order to keep your indoor air quality clean, your unit running at its maximum efficiency, and your energy costs down. US Home Filter can supply you with the best and most efficient HVAC filter available! Changing the filter is as important as changing the oil in your car and US Home Filter makes filters that fit all AC/HVAC units. From standard to custom air filters, to whole-house filters, grille filters and humidifier filters, we have all of your filter needs covered!

Order now from US Home Filter and receive FREE SHIPPING on your order!

Selecting the filters that are just right for your home can be difficult and confusing at times. At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.

How Dirty Air Filters Affect Your Home

dirty air filtersHave you ever wondered why we emphasize the importance of changing your air filter regularly? You may be surprised by the answer. You may think that dirty air filters simply contaminate the air; however, that is not the complete answer. Air filters do much more than remove particles from the air and prevent them from returning into the air you breathe. They also block particles from causing damage to the inside of your air conditioner. When an air filter is dirty, it is unable to do its job efficiently. So, what are the real reasons you need to change your air filter once a month? Here are the top 4 ways a dirty air filter can affect your home.

#1: Dirty Air Filters = Feeling Less Comfortable

The air filter may appear to be a small component of your HVAC system, but it plays a big role. Clean air filters allow air to flow through your home efficiently. If your air filters are dirty, airflow is restricted, affecting the amount of cool air circulating throughout your home. When this happens, there isn’t enough air being put back into your home to keep you cool or warm. You may also start to notice hot and cold spots throughout your home and a feeling that the temperature you feel does not match the thermostat reading. If this is the situation in your home, a dirty air filter may be the culprit; however, discomfort is the least of your worries

#2: Air Conditioner Leaks

To cool the air in your home, air conditioning systems use a refrigerant that, as it is circulated, changes from a gas to a liquid. During this process, the heat from your home is trapped and expelled.  As the refrigerant is evaporated in the indoor evaporator coil, it absorbs the heat from air blowing over the coil. When the air filter is dirty, warm air becomes limited. This could cause the coil to freeze.

As the coil thaws, water could begin to leak into your home, causing structural damage. If you notice condensation or water around your HVAC system, a frozen coil is the culprit, and there may be other issues within the system as well. Changing your filter monthly prevents this from happening.

#3: Higher Energy Bills

An air filter that is not replaced on a regular basis will become clogged with large amounts of airborne particles. With further neglect, it will become completely blocked, forcing dust and mold back into your indoor air. Dirty air filters also restrict air flow putting strain on your HVAC equipment as the fan has to work even harder to try to bring in the right amount of air. As the system works harder, it uses more energy, therefore increasing your energy bills. Make sure you check your filter monthly and clean or replace it according to the manufacturer’s directions. Changing your air filter every 30 days is one of the easiest ways to lower your monthly utility bills!

#4: AC/Heating System Damage

HVAC systems were designed to take in a specific amount of air each time they cycle. When airflow is impeded, the system components have to work harder. More wear and tear on a system in a season may mean your HVAC system will fail you when you need it most. It is important that the airflow not be constricted or impeded, or the strain placed on your furnace/AC unit will cause less efficiency and can eventually lead to damage to multiple components of your unit.

Air filters do come at a price, but that cost is much less than an emergency call to your local HVAC company. Change your air filters regularly and have your HVAC system inspected annually to ensure it is running properly. Looking for a heating and cooling contractor to inspect your HVAC system? The Department of Energy website offers instructions to help you find the right contractor for your needs.

Selecting the Right Air Filters

Selecting filters that are just right for your home can be difficult and confusing at times. Although not exactly rocket science, choosing the best furnace filter to replace your old one can be a bit of a challenge. What MERV rating is best for my family? Is there an advantage to getting a higher-rated filter? Am I paying the right price? At US Home Filter we understand this, which is why we offer an experienced staff to help answer any questions you may have.

Order now from US Home Filter and receive FREE SHIPPING on your order!

If you have any questions about furnace filters (or any other questions about AC, custom air filters, Whole House filters or Grille filters), we have an experienced staff to help answer any questions you may have. For personal assistance with your air filter needs, please contact us now online or call us at (855) 237-1673 and we will do our very best to assist you in selecting the right filter for your individual needs. We carry humidifier filters and pads for all major manufacturers (including Air King, American Standard, AprilaireGeneralAire and Honeywell). We want to earn your business and we guarantee your satisfaction! Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.