Does MERV Rating Affect Efficiency? - An Expert's Guide

When it comes to air filtration, the Minimum Efficiency Reporting Value (MERV) rating is an important factor to consider. This nationally recognized measurement system is used to qualify all air filters and is based on the filter's ability to trap particles of a specific size. But what does this mean for efficiency? In this article, we'll explore the impact of MERV ratings on efficiency and how to choose the right filter for your needs. The MERV scale ranges from 1-4 (low-efficiency filters) to 13 and higher (high-efficiency filters).

The higher the filter rating, the smaller the particles it will capture and the higher the percentage of particles captured. It's important to note that the MERV scale is not linear; the difference between a MERV 6 and a MERV 8 is almost double in terms of the percentage of particles captured. As the MERV rating increases, the filter becomes more restrictive and more pressure and energy will be needed to expel air. This means that your air conditioning system must work harder to move air when using a filter with a high MERV rating.

If you select an air filter with a MERV 13 rating, it can last up to six months before you have to replace it. Before you buy a new oven filter, be sure to check if your air conditioning system has a MERV rating limit. You can also use the Microparticle Performance Rating System (MPR), which ranges from 300 to 2200 and measures the effectiveness of a filter to trap only the smallest particles on the MERV scale (0.3 to 1 micron in size). Combining this information with ideas from the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE), the CDC recommends that office buildings and other indoor spaces use air filters with a MERV 13 rating to combat the spread of the COVID-19 virus.

One of the best ways to determine which MERV classification to use is to compare the options side by side. If your family has allergy problems or serious respiratory problems, such as asthma, you may want to invest in filters with higher MERV ratings. Air conditioning unit technology has progressed since then and most modern units in recent years should be able to use at least one MERV 8 filter. Air filters with a MERV rating equal to or greater than 8 are naturally thicker, which means less space for air to circulate. Filter technology has grown by leaps and bounds over the years, and MERV ratings are designed to help us determine the most effective and efficient air filter options for heating and cooling systems and more.

Choosing the right MERV rating for your boiler filter has a big impact on indoor air quality, your air conditioning system, and most importantly, your family's well-being. Ultimately, selecting an appropriate filter depends on your individual needs; if you're unsure which option is best for you, consult an expert. In conclusion, understanding how MERV ratings affect efficiency is essential when selecting an air filter for your home or office. The higher the rating, the more particles it will capture but also requires more energy from your air conditioning system.

Be sure to check your system's limit before purchasing a new filter and consider consulting an expert if you're unsure which option is best for you.