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Filters tiny particles for cleaner air in homes and some businesses.


MERV 13 is one of the better alternatives to airborne particles. You will find our MERV 13 filters truly effective in capturing common allergens such as dust, pollen, and pet dander and offering fresh and clean air inside your living environment.

Made in the USA from premium materials, our MERV 13 filters are compatible with all major brands of air conditioners, furnaces, and HVAC systems. Places that demand higher or super clean air make use of MERV 13 and higher filters to get the desired outcomes. Our MERV 13 filters come with a longer lifespan and successfully remove a wide range of air pollutants.

With our MERV 13 air filter, you will earn points towards the LEED green building certification program. These filters will remove particles of 0.30 microns and so on. They have the efficiency to remove nearly 99.97% of airborne particles.

Understanding MERV13 Filters

MERV13 filters are highly efficient air filters commonly used in HVAC systems to improve indoor air quality. MERV indicates a filter’s ability to trap airborne particles. With a MERV13 rating, these filters capture smaller particles, including dust, pollen, mold spores, pet dander, and even some bacteria.

These filters are especially beneficial for individuals with allergies or respiratory issues as they can significantly reduce indoor air pollutants. They’re also effective in preventing the spread of airborne viruses. When MERV 13 filters are used correctly, they can offer the best air quality, like HEPA filtration.

More air filtration is provided by MERV13 filters than by lower-rated filters because of their capacity to capture particles as small as 0.3 microns. However, their enhanced efficiency may slightly restrict airflow, so it’s essential to ensure compatibility with your HVAC system and change them regularly to maintain optimal performance.

When selecting air filters, consider your specific air quality needs and HVAC system requirements. MERV13 filters offer superior filtration, making them an excellent choice for maintaining cleaner and healthier indoor air.

Understanding MERV13 Filters

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Why Choose MERV 13 Air Filters?

Enhanced Filtration Efficiency

MERV 13 filter can effectively capture a variety of airborne particles as small as 0.3 microns, leading to cleaner air.

Improved Air Quality

Using MERV 13 filters can significantly enhance indoor air quality by reducing the undesired presence of allergens and irritants.

Greater Durability

Based on the brand you choose, these filters have a longer lifespan than other filters. There is no frequent replacement required.

Compare MERV Ratings









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MERV 13 Air Filters

merv 8


Residential / Commercial

Healthy Families

MPR 600 & FPR 5

Captures 90% of Airborne Particles

MERV 13 Air Filters

merv 11


Residential / Commercial

Allergy Sufferers

MPR 100-1200 & FPR 7

Captures 95% of Airborne Particles

MERV 13 Air Filters

merv 13 


Residential / Commercial

(Hospital Grade)

Asthma and Other Respiratory Issues

MPR 1500 - 1900 & FPR 10

Captures 98% of Airborne Particles

MERV 13 vs HEPA Filters: The Differences Explained

The goal of both MERV 13 and HEPA (High-Efficiency Particulate Air) filters is to improve indoor air quality, but there are some noticeable differences in their functions and efficacy. MERV 13 filters are very effective at capturing particles that range in size from 0.3 to 1.0 microns. This allows them to capture a wide range of pollutants, including pet dander, dust, pollen, mold spores, and some bacteria. On the other hand, HEPA filters are more effective than MERV 13 filters; they can collect 99.97% of particles as small as 0.3 microns, which includes the majority of bacteria and viruses.


In terms of particle size filtration, HEPA filters are designed to contain smaller particles, such as smoke, bacteria, viruses, and other microscopic particles, whereas MERV 13 filters efficiently capture smaller particles but may not trap ultrafine particles. Applications-wise, MERV 13 filters work well in residential and some commercial HVAC systems, significantly improving indoor air quality and lowering allergen levels. 


Whereas HEPA filters are typically found in vacuum cleaners, specialty air purifiers, and air filtration systems that are mainly used in environments such as labs, hospitals, and other locations that require high-quality air. When it comes to compatibility and airflow, MERV 13 filters usually provide excellent filtration while enabling better airflow in the majority of HVAC systems. HEPA filters may restrict airflow more than MERV 13 filters do because of their high efficiency.

What Contaminants Do MERV 13 Filter Blocks

MERV 13 filters are highly effective at capturing various contaminants and particles present in the air. These filters offer great protection against a variety of airborne contaminants and have the ability to block a wide range of airborne pollutants.

  • Dust
  • Dust Mites
  • Pollen
  • Mold Spores
  • Pet Dander
  • Bacteria and Some Viruses
  • Smoke
  • Smog
  • Germs
  • Other Airborne Particles

Because of their work efficiency, these filters are mostly used in office places, theaters, event halls, hospitals and clinics, manufacturing units, and fitness centers.

Contaminants Do MERV 13 Filter Blocks
Comfort with MERV13 Air Filters

Improving Health and Comfort with MERV13 Air Filters

MERV13 air filters make indoor air cleaner and healthier. They catch small particles, such as dust, pollen, and pet dander, that can cause allergies or breathing problems. These work ideally for people who are facing allergies or asthma. They also make the air smell and feel fresher, making homes and offices more comfortable.

These filters may even be able to block the spread of some larger germs, which would lower the risk of getting sick. Overall, using MERV13 filters in your heating or cooling system can improve your health as it will keep the air cleaner and more pleasant to breathe.

  • Enhanced Indoor Air Quality
  • Reduced Airborne Pollutants
  • Improved Respiratory Comfort
  • Commitment to Healthier Spaces

Key Signs for a Timely Change of MERV 13 Air Filter

To keep your air quality at a high level, it is essential to know when to change your MERV 13 air filter. Here are some key signs indicating it’s time for a filter change:

Decreased Airflow

If you notice reduced airflow from your HVAC system, it could be due to a clogged filter that restricts airflow.

Increased Allergy Symptoms

If you start experiencing allergy symptoms more than usual, it's time to get your filter replaced.

Unusual Odors

If you detect strange or musty odors in your home or office, it could be a sign of a clogged air filter.

Energy Bills Spike

If you notice a sudden spike in your energy bills, it might be due to a clogged filter restricting system efficiency.

Even without obvious signs, following a regular maintenance schedule is essential. Manufacturers often recommend changing MERV 13 filters every few months, but this can vary based on usage, environmental factors, and specific filter guidelines.

Custom Filters Direct: Your Gateway to Pure, Fresh Air Solutions

Custom Filters Direct is your go-to destination for top-quality air filtration solutions. We specialize in providing tailored filters designed to deliver pure, clean air for your home or business. Our commitment is to offer customized filter options that match your specific HVAC system requirements, ensuring optimal performance and improved indoor air quality. With a wide range of filter options, including MERV 13 and other high-efficiency filters, we aim to meet diverse air purification needs. Our filters effectively capture dust, pollen, pet dander, mold spores, and other airborne particles, creating a healthier and more comfortable environment for you and your family or employees.

Need Help Choosing the Perfect MERV Rating Air Filter?

Choosing the perfect Minimum Efficiency Reporting Value (MERV) rating for an air filter depends on various factors, including your specific needs, the environment, and the HVAC system. The rating system based on 1 to 20 generally specifies the efficiency of the filter to capture airborne pollutants. Lower ratings (1-4) capture larger particles, while higher ratings (13-20) capture smaller particles. You need to determine what things you want to filter out. For a normal house, a MERV rating between MERV 8 and MERV 13 is often the best option, whereas, for sensitive individuals or special environments, you can go with higher ratings. If you’re unsure about the best MERV rating for your situation, consult our HVAC professionals to get the best one that will fulfill your requirements.

The frequency of changing MERV 13 filters varies depending on factors such as usage intensity and indoor air quality. Generally recommended to be replaced every 3 to 6 months, these filters might require more frequent changes in high-traffic areas or environments with high dust levels or pollutants. You should also check the manufacturer’s guidelines to experience better performance from the product.

Although MERV 13 filters are primarily made to collect particulates, including dust, pollen, smoke, allergens, and some bacteria and viruses, their main purpose is not to remove odor from the air. However, these filters can help reduce odors indirectly by capturing larger particles that may carry some odor-causing elements.

Installing a MERV 13 filter in your furnace is possible, but it’s important to check your furnace’s compatibility with higher-rated filters. Some HVAC systems may not be designed to handle the increased airflow resistance that a MERV 13 filter can create. It’s important to ensure the filter fits properly and regularly monitor its condition to prevent reduced efficiency or damage to the furnace.

The main areas of difference between MERV 11 and MERV 13 air filters are efficiency and particle-capturing capacity. MERV 11 filters are effective at removing common household allergens such as dust mites, pollen, mold spores, and pet dander by capturing particles up to 3 micrometers in size. These filters are frequently found in residential HVAC systems.

On the other hand, MERV 13 filters have a higher filtration efficiency and can capture particles as small as 0.3 microns, which includes some viruses, bacteria, smoke, and finer allergens. They are used in places like clean rooms, hospitals, and other places where a higher degree of purification is necessary. The best choice between MERV 11 and MERV 13 filters depends on a number of factors, including the required air quality, the particular environment, and the size of the particles that need to be filtered.

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