The MERV rating of an air filter is a measure of its efficiency. It refers to the minimum number of times that air needs to pass through a filter in order to remove a specific percentage of its contaminants. The higher the MERV rating of a filter, the more effective it is at trapping particles, dust, pollen, bacteria and other contaminants that can cause allergies or infections if not removed from the air.Air filters have become an essential part of household appliances such as air conditioners and HVAC systems. These filters trap microscopic dust and dirt particles in the air and help maintain a clean and fresh indoor environment. But how do you know which filter is best for your home? There are different types of air filters available on the market and each has its own MERV rating. Let’s take a closer look at what each MERV number means and how it can help you find the right filter for your home.

What is MERV?

The MERV rating is a scale used to measure the efficiency of a filter. It is a number between 1 and 16 that indicates how many times the air needs to pass through the filter in order to remove a specific percentage of its contaminants. The higher the MERV rating of a filter, the more effective it is at trapping particles, dust, pollen, bacteria and other contaminants that can cause allergies or infections if not removed from the air.The MERV scale was developed by the American Society for Testing and Materials (ASTM) in the 1950s. It has since been adopted by most filter manufacturers and is the standard by which filter efficiency is measured.

MERV 1: The least effective filter

MERV 1 filters are designed for low-efficiency use in commercial buildings, offices, and other indoor environments where there is little risk of contaminants. They are not suitable for residential use.MERV 1 filters are typically made of fiberglass or cellulose and are usually fairly large in size. They are often used in HVAC systems to protect large ductwork from contamination.MERV 1 filters are not suitable for use in households. They are not recommended for indoor or outdoor use and should not be used in air conditioning systems.

MERV 2: Moderate efficiency filter

MERV 2 filters are suitable for moderate indoor environments where there is some risk of contamination. They can be used in households, but should not be the only filter in the HVAC system.MERV 2 filters are often made of polyester or fiberglass and are smaller than MERV 1 filters. They are usually installed in the HVAC ductwork and are used to protect the HVAC system from contamination.

Air conditioning filters

Air conditioning filters are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air. They trap contaminants in the air as it passes through the filter and prevent them from entering the house.Air conditioning filters trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for homes

Air conditioning filters for homes are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for homes trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for machines

Air conditioning filters for machines are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for machines trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for vehicles

Air conditioning filters for vehicles are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the car. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for vehicles trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for your expensive air conditioner

Air conditioning filters for your expensive air conditioner are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for your expensive air conditioner trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for Aircon service providers

Air conditioning filters for Aircon service providers are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for Aircon service providers trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for temperature-controlled rooms

Air conditioning filters for temperature-controlled rooms are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for temperature-controlled rooms trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for air conditioning machines

Air conditioning filters for air conditioning machines are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for air conditioning machines trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for temperature-controlled buildings

Air conditioning filters for temperature-controlled buildings are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for temperature-controlled buildings trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for temperature-controlled offices

Air conditioning filters for temperature-controlled offices are designed to trap contaminants in the air as it passes through the filter and prevent them from entering the house. They are installed in the HVAC system to reduce the amount of dust, pollen and other contaminants in the indoor air.Air conditioning filters for temperature-controlled offices trap contaminants in the air and help to maintain a clean and fresh indoor environment. They are necessary to protect you and your family from the dangers of indoor air pollution.

Air conditioning filters for temperature-controlled hospitals

Air conditioning filters for temperature-controlled

Frequently Asked Question

Change your AC filter every 90 days. Most manufacturers recommend this, especially at the start of a new season. Make sure to replace them with the correct sizes and dimensions. If your AC manufacturer has a specific recommendation you may contact air filter manufacturers to customize one for you.
Once your Air Conditioning Unit is too hot, then it is a sign that you may need to replace your air filter because your unit is doing more work than usual, to reach its desired output. In the long run, it will damage your unit. Once the air is not cold enough, then you need to check your filters as well. Failure to frequently change your unit will increase your electricity bill since your unit is working double the usual. You get more allergy and respiratory attacks plus there is more dust on the air vents.
Changing your AC filter is part of your maintenance at home. The air you breathe depends on the quality or state of your air filter. How your unit performs also depends on your usage and how often you change your air filters. If you want your unit to stay longer, you ought to follow the recommended frequency of air filter replacement.
An air filter is responsible for cleaning or removing visible to microscopic pollution that is passing through your HVAC. It is important in keeping your air quality clean and breathable. It also keeps allergies away, especially to those sensitive to dust. It also protects your unit from further damage.
Once you have a dirty filter, expect your allergies to get triggered. You’ll soon get headaches, chest tightness and respiratory diseases. Despite your doctor’s treatment, without removing the culprit of your symptoms, it might get worse or will keep coming back again.