High Quality & Made In The USA
Replace your current furnace air filter with a premium high quality 21 1/2×23 3/8×1 MERV 12 filter. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma.. 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.. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma.
Affordability & High Quality
Don’t break the bank maintaining your pleated MERV 12 21 1/2×23 3/8×1 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 21 1/2×23 3/8×1 Filters
Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame..
Nominal Size: 21 1/2×23 3/8×1
Actual Size: 21 1/2 x 23 3/8 x 3/4 (21.5 x 23.38 x 0.75)
Nordic Pure MERV 12 is equivalent to MPR 1500-1900
Made in the USA.
Free Delivery – USA only
Full Product Details
Nordic Pure MERV 12 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, allergens and other contaminants are removed.
MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500-1900. While different companies use different scales to measure the air filters efficiency, Nordic Pure chose to follow the industry standard, MERV, as developed by ASHRAE (the American Society of Heating, Refrigeration and Air Conditioner Engineers). No matter the name of the rating, the efficiency of all air filters is rated according to the same criteria as set forth by ASHRAE.
Nordic Pure furnace air conditioner filters are manufactured using a heavy duty, moisture resistant beverage board frame. As with all Nordic Pure furnace air conditioner filters, the material is electrostatically charged to attract unwanted particles. The media used will not promote the growth of bacteria or mold on the air filter and is better at trapping airborne particles than fiberglass filters. Our attention to the smallest of details results in a healthier living space.
For fresh, clean air in your home and office, it is important to regularly change your AC filter, especially during home improvements. We recommend changing your HVAC furnace filter every 1-3 months, depending on your unique home or office environment. People with pets or those who suffer from allergies should change their A/C air filters more often. Replacing your air filter regularly not only improves indoor air quality, it helps your HVAC unit perform more efficiently.
CONSTRUCTION: Custom air filters are made by cutting down or combining 1, 2 or 3 air filter frames. Depending on the size, we may use tape to make your custom size A/C air filters. So, they might not be pretty, but they will be strong.
Before ordering, use a tape measure to determine the exact width (short side) and exact height (long side) of your current air filter. If your current air filter does not fit your unit correctly, please give us a call. We are happy to help you determine the correct size that you need.
RETURNS: Custom AC furnace air filters are not returnable since we hand make them per your exact dimensions when you enter your air filter size above. Since we cannot give refunds for custom size furnace filters, please make sure you order the exact size you need to the fraction of an inch.
Important Note: Almost all air condition filters have a different Actual Size (the exact dimensions) than Nominal Size (the name) printed on the air conditioning filter. It is best to measure the exact size of your A/C filter and compare it to our Actual Size to be sure your HVAC replacement filter fits!
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
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.
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.
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.
– Free Delivery
– 30-day Return Policy
– Global Delivery Service
– Tracking Information
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
Thank you for viewing – Home Furnace Air Filter 21 1/2×23 3/8×1 MERV 12 HVAC AC Replacement
If you were unable to find the filter you were looking for please let us know and we will source the filter for you – Request an air filter by visiting our Contact us page.