Nordic Pure MERV 12 Air Filters, 2 Pack

Almost all furnace filters have an "actual size" that differs from the "nominal size" printed on the air filter. It is highly recommended to measure your air filter and compare the exact dimensions to our "Actual Size" specifications. This is especially important for 4-inch and 5-inch air filters, as there can be significant variance between the nominal and actual sizes depending on the manufacturer.

As an example, if you are replacing a 4 3/8-inch depth 20x25x4 filter in your Honeywell unit, you should order our 20x25x5 Honeywell Replacement air filter that measures 19 7/8 x 24 7/8 x 4 3/8 (19.63x24.88x4.38) inches.

Nordic Pure 20x25x4 Pleated Air Filters with a MERV 12 rating are manufactured using electrostatically charged synthetic materials that effectively attract and capture most airborne particulates in your home. These high-quality pleated air filters feature a heavy-duty, moisture-resistant beverage board frame with a metal mesh support grid bonded to the pleats for added durability and support.

MERV 12 furnace air filters are comparable to HVAC filters with an MPR (Microparticle Performance Rating) of 1500-1900. This high-performance HVAC replacement filter will help keep your air conditioning and heating systems running efficiently, resulting in energy savings and reduced maintenance costs.

It is essential to regularly change your furnace air filters, especially during any home improvement projects, to maintain fresh and clean air in your home or office. We recommend changing your air filter every 3-6 months to ensure maximum efficiency and economy.

The Actual Size of the Nordic Pure 20x25x4 MERV 12 Pleated AC Furnace Air Filters is 19-1/2-Inch by 24-1/2 -Inch with a 3-3/4-Inch depth. As mentioned earlier, it is crucial to measure your existing filter and compare it to our "Actual Size" to ensure a proper fit, as most filters are slightly smaller than the nominal size printed on the packaging.

This is especially important for 4-inch and 5-inch filters, as there are various exact sizes available for different HVAC manufacturers. Your filter may be labeled as 20x25x4, but it may actually be the same as our 20x25x5 filter. Measuring your filter before ordering is the best way to avoid any surprises during installation.

Changing your air filter is the first step in ensuring your HVAC system operates at its optimal level. Generally, 4-inch air filters should be replaced every 3 to 6 months. It's important to note that particles in indoor air are measured in microns, which are 1/1000 of a millimeter. A human hair is approximately 100 microns wide, while a MERV 12 Nordic Pure air filter can capture airborne particles as small as 0.3 microns.

Nordic Pure air filters do not kill germs; however, the filter media does not support the growth of bacteria or mold. Therefore, there is no need to add potentially irritating chemicals to the air filter to kill germs. Instead, these filters use an electrostatically charged synthetic material that effectively attracts and traps airborne particulates, protecting your family from allergy-causing pollen, fine dust, smoke particles, airborne plant spores, bacteria, and some viruses.

All Nordic Pure air filters are made in the USA and offer a MERV 12 rating, which is equivalent to an MPR of 1500-1900. Remember to measure your air filter and compare the dimensions to our "Actual Size" to ensure a proper fit for your HVAC system.

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