High Quality & Made In The USA
Replace your current furnace air filter with a premium high quality 20x20x4 MERV 12 filter. If you are replacing a Honeywell or Lennox 20x20x4 or an air filter with an MPR rating with an actual depth of 4 3/8, please see our 20x20x5 (4 3/8 actual depth). All Nordic Pure brand products are proudly made in the USA.
MERV 12 Pleated AC Furnace Filter Features
A blend of MERV 12 rated filter material produces a high filtration option for everyday families. Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants.. If you are replacing a Honeywell or Lennox 20x20x4 or an air filter with an MPR rating with an actual depth of 4 3/8, please see our 20x20x5 (4 3/8 actual depth)
Affordability & High Quality
Don’t break the bank maintaining your pleated MERV 12 20x20x4 furnace filter, Filters2Go supply competitively priced high quality replacement filters for almost all filter sizes. We make our filters so affordable they even include delivery with tracking!
Your chosen quantity of
Nordic Pure MERV 12 20x20x4 Filters
Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame..
Nominal Size: 20x20x4
Actual Size: 19 1/2 x 19 1/2 x 3 5/8 (19.5 x 19.5 x 3.63)
Nordic Pure MERV 12 is equivalent to MPR 1500-1900
Made in the USA.
Free Delivery – USA only
Full Product Details
Important Note: Almost ALL furnace filters have a different “actual size” than the nominal size printed on the air conditioner filter. It’s best if you measure your air filter for the EXACT size and compare it to our “Actual Size” – and then you can be sure your A/C air filter fits! With the 4″ and 5″ air filters there is a wider variance between the nominal and actual size depending on the manufacturer. If you are replacing a 4 3/8 depth 20x20x4 filter in your Honeywell unit you should order our 20x20x5 Honeywell Replacement air filter that measures 19 5/8 x 19 7/8 x 4 3/8 (19.63×19.88×4.38).
Nordic Pure 20x20x4Pleated Air Filters MERV 12are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, smoke particles, virus carriers, bacteria, allergens, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a heavy duty, moisture resistant beverage board frame. There is a metal mesh support grid bonded to the pleats for extra support. Our AC filter media prevents the growth of bacteria or mold, resulting in a much healthier living environment.
MERV 12 furnace air conditioner filters are comparable to HVAC filters with the rating of MPR 1500-1900. Particles in indoor air are measured in microns; for scale, a human hair is about 70 microns wide. Each Nordic Pure 4 MERV 12 air filter will capture more than 90% of 3.0-10.0 micron contaminants and up to 90% of 1.0-3.0 micron contaminants.This high-performance HVAC replacement filter will outperform non-electrostatic fiber-glass filters, washable filters, poly disposable filters, and will help keep your air conditioning and heating systems running efficiently, saving money on utilities and costly maintenance.
The effective life of your AC air filter depends on both the inside and outside conditions in which you live. It is important to regularly change your furnace air conditioner filters especially during any home improvements for fresh, clean air in your home or office. We recommend that you change your air filter every 3-6 months to maintain maximum efficiency and economy.
Furnace Filter Replacement Instructions
The effective life of your AC air filter depends on both the inside and outside conditions in which you live. It is important to regularly change your furnace air conditioner filters especially during any home improvements for fresh, clean air in your home or office. We recommend that you change your air filter every 30-90 days to maintain maximum efficiency and economy.
View the below furnace filter cleaning instructions
Video Tutorial For Replacing Furnace Filter
Frequently Asked Questions
How often should I replace my furnace filter?
The interval between replacing your furnace filter will mainly depend on the air quality of the internal space and external environment. We recommend the below guide to help maintain your appliance and indoor air quality.
It is important to regularly change your furnace air conditioner filters, especially during and after any home improvements for fresh, clean air in your home or office. We recommend that you change your air filter every 30-90 days to maintain maximum efficiency and performance.
Users who have pets and live in dusty or polluted environments like cities will likely need to replace their furnace filter every calendar month.
Users who have no pets and live in low dust / polluted environments will be able to stretch this out to 90 days.
What are filter MERV ratings?
MERV ratings are Minimum Efficiency Reporting Values, or MERVs, report a filter’s ability to capture larger particles between 0.3 and 10 microns (µm).
This value is helpful in comparing the performance of different filters
The rating is derived from a test method developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE). The higher the MERV rating the better the filter is at trapping specific types of particles.
Average Particle Size Efficiency in Microns
MERV Rating / Efficiency
1-4 / 3.0 – 10.0 less than 20%
6 / 3.0 – 10.0 49.9%
8 / 3.0 – 10.0 84.9%
10 / 1.0 – 3.0 50% – 64.9%, 3.0 – 10.0 85% or greater
12 / 1.0 – 3.0 80% – 89.9%, 3.0 – 10.0 90% or greater
14 / 0.3 – 1.0 75% – 84%, 1.0 – 3.0 90% or greater
16 / 0.3 – 1.0 75% or greater
All furnace filters require regular replacement to function properly. Follow the manufacturer’s or filter suppliers recommendations on maintenance and replacement.
How does a furnace filter help improve indoor air quality?
A furnace filter will help remove pollutants, VOC’s, pollen, dust and other particles from the air in your home. Over time dirt and pollutants start to build up and block the filters ability to clean the air, this is the reason it is important to regularly replace your furnace filter.
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Filters2Go.com stock a range of vacuum, air purifier, car cabin air filters and more. All purchases come with free delivery and a 30-day return policy.
Keep breathing clean air and remember to change your air filter on a regular basis.
How clean is the air in your home?
Pet dander, mold spores, harmful gases and other airborne particles can quickly overcome a household,
potentially leading to bad odors, allergies and sickness.
Find an air purifier filter here at Filters2go.com
How clean is the air in your car?
Find a car cabin air filter here at Filters2go.com
Does your vacuum still suck like the good old days?
The filter life of most vacuums is 3-6 months.
Find a vacuum filter here at Filters2Go.com
Why is clean air important?
Don’t listen to some company about what is good and not good for you, listen to the experts – Lung.org
While it’s easy to see when you need to dust or sweep, it’s harder to know when the air in your home needs cleaning. In fact, the indoor air you breathe can be hazardous to your health without any telltale signs. Indoor air can be even more polluted than the air outdoors. Don’t let the air in your home threaten your family’s health, especially if someone in your family has asthma or another lung disease. Let us show you how to protect them. Get a new filter now @ Filters2Go.com
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