Air filters are an essential part of any home's air conditioning system, as they help to keep the air clean and free of dust, mold, pollen, and bacteria. The Minimum Efficiency Value (MERV) rating of an air filter measures how effectively the filter prevents contaminants from passing through the filter and into the air stream. MERV indices range from 1 to 16, and filters with higher MERV indices trap small particles more effectively than filters with lower MERV indices. It is important to note that using an air filter with a MERV rating that is too high can be just as bad as using one that is too low.
Restricted airflow can reduce comfort, increase energy use, and accelerate the wear and tear of air conditioning components. In particular, using an air filter with a MERV rating that is too high can damage the compressor, heat exchanger, and air conditioner coil. The higher the filter rating, the smaller the particles it will capture and the higher the percentage of particles captured. Low-efficiency filters are usually within the MERV 1-4 range, while high-efficiency filters are those of the MERV 13 and higher. 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. When selecting an air filter for your home, it is important to consider both size and type.
Ovens come in a variety of sizes and configurations, which means there isn't one filter that fits all cases. A deeper depth can also improve filter life and efficiency; it also makes it easier for air to enter and exit the filter. If you try to use a 4-inch-thick air filter in a system that's made for a 1-inch-thick filter, efficiency will worsen. A 1-inch filter with less surface space will clog up fairly quickly and will need to be replaced much sooner than a coarser filter. It is recommended to change filters in this category every two to four weeks, which may be difficult for some people to maintain. Generally speaking, anything under a MERV 13 air filter should provide very efficient air purification in a home without affecting airflow. The amount may vary depending on the home and the HVAC system, but with modern technology, the increase in airflow resistance achieved with a high-efficiency filter is often marginal.
Air filters, which have a thick filter material, can trap small particles without impeding air flow like a thin, pleated air filter would. Choosing an appropriate air filter for your home can be tricky. It's important to consider both size and type when selecting an air filter for your home. Additionally, it's important to remember that using an air filter with a MERV rating that is too high can be just as bad as using one that is too low. To ensure optimal performance from your HVAC system while still keeping your home's air clean and free of dust, mold, pollen, and bacteria, it's best to select an air filter with a MERV rating between 1-13. It's also important to remember to change your filters every two to four weeks.