MERV Vs. HEPA Filters: Which Is Better?

A lesser-known fact is that the air inside your home is more polluted than the air outdoors. Because of this, it is considered extremely important that you use a high-quality air filter in your home or office. An air filter will be able to maintain clean indoor air quality which is essential for protecting your health and well-being. When you use an air filter then it helps in trapping dangerous airborne particles like dust, pollen, dirt, debris, mold spores, and even pet hairs or furs. All of these pollutants can be quite harmful to your health.

When there is poor air quality then it can lead to multiple health problems causing respiratory diseases such as irritating the lungs, rapid coughing and sneezing, pain in the chest area, and shortness of breath. It can also increase the risk of strokes or heart attacks. This can also lead to life-threatening problems like lung cancer, breast cancer, and blood cancer. Using an air filter is especially important when there are individuals who suffer from health issues like allergies and asthma. However, there are so many different types of air filters that choosing between them can be quite an overwhelming task.

The two most popularly used air filters are MERV and HEPA as they both are highly effective in capturing airborne particles. So, now the question is which air filter will be the right one for you? So, in this blog, we will discuss essential information like what MERV air filters are along with a full explanation of HEPA air filters. The major differences between them and the pros and cons for both the filters. Lastly, some important things to consider while choosing between MERV and HEPA air filters. All of the information given below will help you make your decision.

Everything About MERV Filters

MERV is the short form for Minimum Efficiency Reporting Value. This helps in measuring the effectiveness of an air filter. This allows a person to know how well that particular air filter will be able to trap the airborne particles. There are multiple air filters with different MERV ratings. The ranking of MERV ratings is from 1 to 20, the higher the MERV ratings are the better it will be at filtration. If you choose to use an air filter with a lesser MERV rating that only ranges from 1 to 4 then this type of MERV air filter can only be used in residential areas as it will only be able to capture large particles like dust and dirt.

When you choose to use an air filter with a MERV rating of 5 to 8 then it will provide you with medium-level filtration and will be able to trap smaller particles like pet dander and mold spores. Choosing a MERV air filter that has 9 to 12 ratings then it can trap even smaller particles which include bacteria and some kinds of viruses. MERV ratings between 13 to 16 are mostly commonly used in industrial places as they can trap even the smallest of particles. Lastly, if your MERV air filter MERV ratings are between 17 to 20 then they are designed specifically to provide you with the highest level of filtration.

HEPA Filters Explained

HEPA air filter is the short form for High-Efficiency Particulate Air. This air filter holds quite a reputation because of its extraordinary ability to trap airborne particles effectively. HEPA air filters are manufactured with a design that helps in trapping the contamination that is circulating in the air. Because of their amazing design, it helps in capturing the particles with an efficiency of 99.97 percent. It traps even the smallest of particles that size is about 0.3 microns or larger than that. These particles include debris, dust mites, pollen, mold spores, and even bacteria and some viruses.

Because of their amazing filtration efficiency, these HEPA air filters are mostly used in places that require a high level of cleaning like hospitals and laboratories. HEPA air filters have a thick web of fibers that allows it to force the air to pass through it. During this process, this air filter is able to trap the airborne particles. This air filter operates by using a combination of different kinds of mechanisms that block the particles in it when they have an impact on the air filter. The excellent design of HEPA air filters allows it to remove even the tiniest of pollutants from the air you breathe. This helps in improving the air quality in your home or office.

Differences Between MERV And HEPA Explained

There are several differences between MERV air filters and HEPA air filters. To help you better understand you can see the table that is given below in which you will get the information to help you better compare between these air filters.

Factors MERV Air Filters HEPA Air Filters
Filtration Efficiency This air filter can trap particles that size is about 0.3 microns with the efficiency percentage of 85 percent. However, the efficiency and percentage depend on the MERV-rating air filter you choose to use. This air filter has one of the highest efficiency of filtration. It can capture airborne particles that size 0.3 microns or larger with an efficiency percentage of 99.97 percent.
Applications The MERV air filter is most commonly used in places like schools, homes, offices, and other commercial spaces. MERV ratings that range between 13 to 16 are used in hospitals. HEPA air filters are used in spaces that require high-quality air with maximum purity like hospitals, clean rooms, laboratories, and other industrial settings.
Airflow It can cause restrictions in the airflow in your HVAC system when the MERV rating air filter is too high. This can also cause higher energy bills. It might reduce the airflow in your HVAC system. Because of this, it requires more usage of energy to maintain the circulation of air in your space.
Cost MERV air filters are quite an affordable option with a massive variety of options available. It also costs quite less in maintenance. HEPA air filters are expensive because of their high level of efficiency. Because of this, the maintenance is also quite costly.

Pros And Cons Of MERV Filters

Before you decide to choose MERV air filters. You should know about the pros and cons that you will get from this air filter.

Pros:

  • MERV air filters have lots of different options for you to choose from. This quality makes it a universal option that allows you to have the flexibility of picking the right filter according to your needs.
  • This air filter is considered perfect for most places like residential, industrial, and commercial spaces. MERV air filters work quite effectively with your HVAC system to offer proper filtration. 
  • MERV air filters are more budget-friendly than HEPA filters. This makes it a convenient and cost-effective option for your homes and offices.
  • It is also considered to be quite energy-efficient when working with certain HVAC systems especially when selecting a lower MERV rating air filter.

Cons:

  • MERV air filters are not considered as efficient as HEPA air filters because they cannot trap small particles like microdust and viruses.
  • When you choose a MERV air filter with a high rating then it will reduce the flow of air in your HVAC system which will eventually require frequent replacements and high maintenance.

Pros And Cons Of HEPA Filters

There are some advantages and disadvantages of using a HEPA air filter. Below you will get complete knowledge of the pros and cons of this air filter.

Pros:

  • HEPA air filters provide you with superior filtration as they can trap airborne particles that are as small as 0.3 microns with an excellent efficiency of 99.97 percent.
  • Because of its extraordinary efficiency HEPA air filters are considered the best option for improving indoor air quality, especially in the home and office.
  • It offers great air quality which makes it perfect to be used in sensitive environments like hospitals and laboratories.

Cons:

  • HEPA air filters are quite expensive and cost more than MERV air filters. The expenses of the maintenance of this air filter are also quite costly.
  • It can reduce the airflow in your HVAC system which eventually results in the consumption of more energy and getting higher energy bills.
  • Even though HEPA air filters are great to be used in specific environments. However, using them in normal residential areas can decrease the level of filtration.

Important Factors When Choosing MERV Or HEPA Filters

There are some essential factors that you need to know about when making the decision to choose MERV air filters or HEPA air filters. Read on to discover the important factors to be considered.

  1. Health Circumstances: HEPA air filters are considered perfect for people who constantly suffer from allergies and asthma as they help trap airborne particles such as mold spores and pollen. MERV air filters that have a rating between 8 to 13 can work great for offering general air quality.
  1. Budget Controls: MERV air filters are a more affordable option and can be quite cost-effective in the long run. HEPA air filters are more costly but they do provide you with better air filtration.
  1. Type Of Environment: MERV air filters are best suited to be used in places like homes, offices, and other commercial spaces. HEPA air filters are considered ideal for places like labs, hospitals, and other areas that require superior air quality.
  1. HVAC System Compatibility: MERV air filters can fit many different types of HVAC systems. While HEPA air filters do require a specific type of system for maintaining proper airflow.
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Conclusion

Here, you have gained complete knowledge about MERV air filters and HEPA air filters. You have learned everything about MERV air filters and understood what HEPA air filters are. You also discover the major difference between these two air filters in terms of efficiency, airflow, cost, and applications. In addition, you also understood the pros and cons of both MERV air filters and HEPA air filters. Lastly, the vital factors that you should consider while choosing between whether you want a MERV filter or a HEPA filter. The information that you get here will help you make the right decision that will be able to suit perfectly with your specific needs and requirements.

If you are looking for the perfect air filter that will help you to improve your indoor air quality then we at Custom Filters Direct can help you with that. We have a wide variety of MERV air filters and HEPA air filters that are designed specifically to fulfill your desires. So, if you want an excellent air filter that will be good for your health while not being available in your budget and can be compatible with your HVAC system, then it has the ideal air filter for you. If you need some expert advice while choosing the air filter you can connect with us by sending us an email at info@customfiltersdirect.com or give us a call at 877-958-5612. Put your trust in Custom Filters Direct for better air quality in your home or office.

Frequently Asked Questions

Can MERV And HEPA Filters Be Used Together?
Yes, you can use MERV and HEPA air filters together. You can use a MERV 13 air filter in your HVAC system for filtering the tiny airborne pollutants along with a HEPA air filter in your HVAC system for enhancing the level of filtration to its maximum capacity. You can also use portable air purifiers that allow you to have multiple air filters in it. This will let you use both MERV and HEPA air filters together. In addition, you can also install a separate system for air filtration in which you can use a HEPA air filter and MERV air filter at the same time.
What Is The Lifespan Of A MERV Filter?
The lifespan of a MERV air filter depends on various factors like the MERV ratings. If you are using an air filter with a lower MERV rating then it will require to be replaced more frequently. When you have an air filter with MERV ratings that are in between MERV 1 to MERV 4 then you need to replace those air filters every month. The air filters that are in between MERV 5 to MERV 8 need to be replaced every 3 months. An air filter that has MERV ratings between 9 to 11 then they need to be replaced every 6 months. Lastly, the air filters that are MERV 12 to MERV 16 can work for about 9 months to a year.
Are There Any Health Benefits To Using HEPA Filters?
Yes, there are multiple health benefits of using HEPA air filters. These advantages include reducing the risk of diseases caused by poor air quality. HEPA air filters help you trap harmful particles like bacteria and viruses. This helps in lowering the risk of spreading common illnesses like cold and flu. Using a HEPA air filter is especially important for people who have a weak immune system like infants and elderly people. This air filter also helps improve indoor air quality by trapping airborne particles like dust, pollen, pet dander, and mold spores. It can also help in improving sleep by keeping you safe from the irritants that cause allergies.
How Often Should I Replace My HEPA Filter?
HEPA air filters can last for a long period of time and only need to be replaced every 6 to 9 months. However, the frequency of replacing the HEPA air filters depends on several factors including the quality of the air filter, the environmental conditions, and how much you choose to use your air filter. There are certain things that you should keep in mind like if your house or office is located in a heavily polluted area then you will be required to replace your HEPA air filter more often. In addition, if you have pets in your home then there will be more dust, allergens, and pet dander in your home which will eventually result in regular replacement of your air filter.
Can MERV Filters Help With Smoke And Odors?
Yes, MERV air filters can help you with smoke and odors especially when you choose to have an air filter that has a higher MERV rating like MERV 13 or above. This will help you to remove smoke and other odors effectively from the air. These air filters are specifically designed for the purpose of trapping small particles that are in the form of smoke. Because of this amazing quality, it is considered an excellent option for reducing indoor air pollution. It is important for you to remember that the MERV ratings play an essential role in the ability to trap smaller particles and filter out smoke.
How Do Air Filters Affect My Energy Bills?
Air filters do have a huge impact on your energy bills. If you are using a dirty air filter then it will increase your energy bills as it puts extra workload on your HVAC system. Because your HVAC system needs to work even harder to maintain the airflow it eventually results in consuming more energy. When your air filters get dirty they get clogged which causes blockage in the air filter. This can raise the total amount of energy consumption by approximately 15 percent. So, it is important that you regularly check and change your air filter to maintain the energy efficiency in your home.
Do MERV Filters Require More Maintenance Than HEPA Filters?
No, HEPA air filters require more maintenance than MERV air filters. HEPA air filters are better and more efficient in capturing airborne particles which include bacteria, viruses, and smoke. Because of this HEPA air filters are also required to have more frequent replacement. Other than that the cost of HEPA air filters are also more expensive than the MERV air filters. When you choose an air filter that has a high MERV rating then it can cause restrictions in the airflow and this can increase the need for maintenance of your HVAC system. While HEPA air filters do offer you better airflow without putting any extra load on your HVAC system.

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