The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHARE) recommends a MERV 6 or higher for optimal air quality. Most people opt for a MERV 8 filter, which is capable of removing contaminants from MERV 8 to MERV 13. Hospitals typically use MERV 14 to MERV 20 filters. To measure filter efficiency, experts use the Minimum Efficiency Reporting Value (MERV). This graph classifies filters based on their ability to capture particles, with ratings ranging from 1 to 16. The higher the rating, the better the filtering capacity. Despite their popularity, these filters don't contribute much to indoor air quality.
They can only filter about 20% of particles between 3.0 and 10.0 microns in size, such as dust, carpet fibers, and pollen. To address changes in filter technology, ASHRAE's 52.2 committee regularly updates the standard. When it comes to choosing the best air filter for your home, experts recommend that people who live in industrial areas or who have a weak immune system opt for air conditioning filters with a higher MERV rating. This larger surface area makes fluid filters seven times more effective than standard types of air filters. The main difference between types of air filters is their ability to filter various airborne pollutants present in your home. To change the air conditioning filter, turn off the air conditioner on the thermostat or raise the temperature to such a high level that the air conditioner won't turn on. Recent innovations in air filters allow for high MERV ratings (11 to 1) with a low pressure drop.
However, as noted above, consult an HVAC professional to see if your system is compatible with a MERV 13 filter or not. Electrostatic filters are ideal for people with allergies because they prevent allergens from spreading in the home. However, there are a lot of testimonials from owners who claim that the MERV 11, 12, and even 13 filters have worked perfectly in their systems for years. We measure how well an air filter removes dust, pollen, and smoke from the air, and we check how freely the air flows through the filter at any fan speed. For example, people with allergies, asthma, or other lung diseases should use filters with a higher MERV rating. However, these filters have some drawbacks. First, they usually cost much more than basic fiberglass filters. When it comes to choosing an air filter for your home or office, it's important to consider all of your options carefully.
Consider factors such as your budget and your specific needs before making a decision. If you're unsure which type of filter is best for you, consult an HVAC professional for advice.
