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Got Questions?

What size air filter do I need for my HVAC system?
Finding the right air filter size is easy! Most filters have the nominal size printed on the frame (e.g., 16x25x1), but the actual size may be slightly smaller. To ensure a perfect fit, measure your existing filter’s length, width, and depth. Need help? Check out How to Find and Measure Your Air Filter Sizes or watch this video: How to Measure an AC Furnace Air Filter

We recommend changing your filter every 30 to 90 days, depending on usage, filter type, and environmental factors like pets, allergies, and air quality. If you’re unsure, check your filter monthly—if it looks dirty, it’s time to replace it.
👉 Read our blog on how often to change your filter

Buying directly from Nordic Pure means you get freshly manufactured filters straight from our U.S. facility, along with access to custom sizes, bulk options, and real customer support when you need it. You skip the retail markup and delays, so you get better filters, better prices, and better service every time.

👉 More On Why You Should Buy Directly From Nordic Pure

Yes! Our filters are designed to capture airborne allergens like dust, pollen, pet dander, and mold spores. For allergy relief, we recommend our MERV 11, MERV 12, or MERV 13 filters, which offer enhanced filtration without compromising airflow.
👉 Learn how the right filter can reduce allergies and pet dander

Yes, especially our Poly Green filters, which are made from recyclable materials and designed with sustainability in mind. Manufactured in the USA, they help reduce landfill waste while still delivering strong filtration and airflow for your home. If you’re looking for an environmentally conscious option, Poly Green is a great choice.

👉 Learn more about our eco-friendly Poly Green filters

Yes! With our Subscribe & Save program, you can have filters delivered automatically on your schedule—no more last-minute filter runs. You’ll save time, money, and always have a clean filter when you need it. Prefer a reminder instead? We’ve got that too.

👉 Set up your subscription or sign up for reminders here

At Nordic Pure, we stand by the quality of our products and our service. Most orders ship within 1–2 business days, and if something isn’t right, we’ll work with you to make it right. That’s part of the Nordic Pure Promise—our commitment to fast shipping, dependable support, and hassle-free returns.

👉 Read about the Nordic Pure Promise

Yes! If your HVAC system needs a non-standard size, we’ve got you covered. Nordic Pure makes custom air filters to order— no compromises on quality. Just tell us your exact dimensions and we’ll build the perfect fit.

Each filter is built with a heavy-duty, moisture-resistant frame and a durable metal mesh support grid bonded to the pleats. Orders ship within 3–7 business days and, like all Nordic Pure products, they’re proudly made in the USA.

👉 Order your custom size here

Unlike mass-produced retail filters, Nordic Pure filters are made-to-order in the USA using high-quality materials for a better, longer-lasting performance. You’ll get a perfect fit, more pleats per inch for superior filtration, and direct access to our U.S.-based support team. Plus, with fast, free shipping and our 30-Day Satisfaction Promise, you get better air—and peace of mind—with every order.

👉 See what sets us apart in The Nordic Pure Promise

Customers Love Us, Read Why!

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