If you’ve been researching air filters online, you’ve probably seen the question:
“Is Nordic Pure a good air filter?”
Short answer: Yes. Nordic Pure air filters are known for strong construction, reliable performance, and a wide range of sizes and MERV ratings. But like any AC furnace air filter, there are a few details, especially around sizing, that are important to understand before you buy.
This guide breaks down real customer feedback, what makes Nordic Pure stand out, and one commonly misunderstood topic: nominal vs. actual size.
What People Are Saying About Nordic Pure Air Filters
Across reviews and forums, Nordic Pure air filters are consistently recognized for:
- Made in America
- Improved indoor air quality
- Sturdy construction
- Good value, especially in bulk packs
- Wide selection of MERV ratings (6–16)
- Carbon air filter options for odor control
These features make Nordic Pure a strong choice whether you’re replacing a standard AC furnace air filter or upgrading to higher-efficiency filtration.
What Makes Nordic Pure Air Filters Different
1. Made in the USA
Nordic Pure air filters are manufactured in the United States, which helps ensure consistent quality and material standards.
2. Strong, Durable Construction
Many customers specifically mention the metal-reinforced backing. This helps the air filter maintain shape under airflow and prevents collapsing, which can happen with lower-quality options.
3. Wide Range of Sizes Plus Custom Air Filter Options
One of the biggest advantages of choosing a Nordic Pure air filter is the wide range of sizes available.
Nordic Pure offers air filters across multiple depths to fit most systems, including:
This makes it easier to find the right AC furnace air filter for both standard and hard-to-fit systems.
If you cannot find your exact size, you still have options.
Nordic Pure also offers custom size air filters, allowing you to order an air filter made to your exact dimensions. This is especially useful for:
Custom Air Filters CTA: Custom Size Air Filters – Nordic Pure
- Older HVAC systems
- Non-standard filter slots
- Unique or custom installations
4. Wide MERV Rating Range (6–16)
Whether you need basic dust control or advanced allergen reduction, Nordic Pure offers flexibility:
- MERV 6–8: Everyday dust and lint
- MERV 10–12: Pollen, pet dander, and common allergens
- MERV 13–16: Finer particles like smoke and bacteria carriers
5. Carbon Air Filter Options
For homes dealing with odors such as pets, cooking, or smoke, carbon air filters provide an added layer of odor reduction. Add “+ Carbon” to combat unwanted odors.
The Most Misunderstood Issue: Nominal vs. Actual Size
This is where some confusion and negative feedback can come in.
You may see comments like:
“The air filter was smaller than expected and fit loose.”
Let’s break down why that happens.
What Is Nominal Size?
Nominal size is the rounded number used for labeling.
Example: 16x25x5
What Is Actual Size?
Actual size is the true measured dimension of the air filter, which is typically slightly smaller.
Example:
- Nominal: 16x25x5
As you can see, we offer 3 different actual sizes to choose from for the nominal size of 16x25x5. Measure accordingly!
- Actual: 15 5/8 x 24 1/8 x 4 7/8 (15.63 x 24.13 x 4.88)
-or-
- 15 3/4 x 24 3/4 x 4 3/8 (15.75 x 24.75 x 4.38)
-or-
- 15 3/8 x 25 1/2 x 5 1/4 (15.38 x 25.5 x 5.25)
Why Are AC Furnace Air Filters Smaller Than Their Listed Size?
This is not a defect. It is an industry standard across all air filter brands.
Air filters are intentionally made slightly smaller or larger to:
- Ensure they fit inside the housing
- Allow for easy installation and removal
- Prevent damage to the system or air filter frame
Why Proper Fit Equals Better Performance
Here’s the key takeaway:
A properly sized air filter should fit snug, not forced and not loose.
If your air filter is too small:
- Air can bypass the air filter
- Dust and allergens may circulate unfiltered
If it’s too tight:
- It can restrict airflow
- It may strain your HVAC system
That is why measuring your air filter is critical.
How to Choose the Right Nordic Pure Air Filter Size
Before buying, take a moment to:
- Remove your current air filter
- Measure actual dimensions (length x width x depth)
- Compare to product listings with exact actual sizes
This is especially important for:
- 4-inch and 5-inch air filters
- Older HVAC systems
- Brand-specific housings
Watch: How to Measure Your Air Filter (Video Guide)
How to Measure – Nordic Pure
So, Is Nordic Pure a Good Air Filter?
Yes. Nordic Pure air filters are a reliable, high-quality option for most homes.
They stand out for:
- Durable construction
- Consistent performance
- Broad MERV rating options (6–16)
- Carbon air filter availability
- Strong value in bulk purchases
The only issue some people run into is not about quality. It comes down to understanding air filter sizing correctly.
Once you match the correct actual size to your system, Nordic Pure air filters perform exactly as expected.
Shop Popular Nordic Pure Air Filter Sizes
If you’re ready to find the right fit, explore these common sizes with multiple actual size options available:
- 16x25x5 air filter
- 20x20x5 air filter
- 20x25x4 air filter
- 20x25x5 air filter
Final Thoughts
If you’re asking, “Is Nordic Pure a good air filter?” the answer is yes (at least we think so…and Nordic Pure has been making air filters since 2004!)
Just remember:
The most important factor is getting the right size air filter for your system.
Do that, and you’ll get the full benefit of:
- Cleaner air
- Better airflow
- More efficient HVAC performance
