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20x25x1 Air Filters

Find replacement 20x25x1 air filters for your furnace and air conditioner. Multiple MERV ratings to select from and Activated Carbon options for additional odour removal.

Free US shipping included
Made in the USA
Great customer service

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How To Selection The Best Air Filter

Finding the right size is important

Knowing the difference between nominal and actual AC filter sizes can save you money and a headache. Industry standard is to display a nominal size which is often larger than the physical size.

We recommend you measure your current filter and then find a furnace filter with a matching “Actual Size”. This will help you avoid order incorrectly and being left disappointed.

Selecting the best MERV rating for your home

MERV stands for Minimum Efficiency Reporting Value, and it represents an air filters minimum filtration ability. Finding the right MERV rating for your home depends on a number of factors.

Our Nordic Pure MERV 8 air conditioning filter range was recently selected the top choice for every day Americans. Perfect for consumers wanting great filtration while mindful of energy bills and heating / cooling performance.

The best filter for allergy suffers was our Nordic Pure MERV 12 + Activated Carbon furnace filters. Perfect for removing small airborne particles like dust pollen and pet dander which lead to allergy and asthma outbreaks.

Find more advice on the best air filter for your home HVAC system here.

Find out if you need Activated Carbon filters

Activated carbon home air filters can be a sensible upgrade for consumers who want to reduce odors within their home.

The charcoal addition works well at absorbing nasty odors while you still achieving full filtration performance through the filter media.

For superior odor control consider our Pure Carbon Home Air Filters.

Furnace Filter FAQs

What furnace filter should I buy for my home?

Knowing which home air filter to buy is way harder then it should be. Luckily we are here to help you find the right AC filter for your house.

View our article “THE FURNACE AND AIR CONDITIONER FILTERS WE WOULD BUY – 2022” for recommendations that cover multiple lifestyles.

Should I upgrade to activated carbon?

If you are sensitive to odors, own pets or live in an area with unpleasant smells, our Plus Activated Carbon HVAC Filters could be the solution you are looking for.

Activated carbon works by drawing in and absorbing unpleasant odors from the air in your home. Find out more about activated via the below PDF link.

A Citizen’s Guide to Activated Carbon Treatment –

Where do I buy furnace filters?

You can buy furnace filters from us directly on this website. Search for the size you require in the above Filter Search form.

All purchases come with free shipping throughout the USA.

Air conditioner filters can also be purchased at many physical stores, local hardware and home maintenance shops should stock a wide range.

How do I replace my air filter?

Follow the below video instructions to help guide you through a typical furnace filter replacement.

Having the ability to change your own air conditioning air filters can save you considerable amounts of money, give you more independence and overall satisfaction, knowing your air filters are clean and replaced on time.

Which way to put air filter in furnace?

How often should I replace my furnace filter?

Regular filter maintenance will help protect your HVAC system and also improve your indoor air quality.

Depending on your AC filter size, MERV rating and air quality, you may need to replace your filter more than first expected.

Environments with large amounts of dust pollen pet dander and other airborne particles may see higher energy bills due to dirty filters.

We recommend you view the below article for more information. “How Often Should You Replace Your Home Furnace Air Filter


What’s the difference between furnace and air conditioner filters?

No matter the name, as long as the filter dimensions and MERV ratings are what you desire, you can purchase them knowing that they are the same product.

Stores decide on product names and terms which can differ between regions, usually terms are aligned with their local cliental.

Furnace filters, air conditioning filters, HVAC filters and pleated air filters, are just some of the names used to describe the same product.

Replacement Furnace Filters
Made in the USA

To help maintain healthy indoor air quality, it is important to replace your  furnace filter on a regular basis. This will also help maintain your furnaces performance, meaning you will have better capacity and lower operating costs.

Stockist of high quality premium Nordic Pure furnace filters that are manufactured in the USA and come with free US delivery.

When it comes to your home or office air quality, don’t sacrifice a couple dollars of your health and wellbeing. Nordic Pure furnace filters come in a range of MERV ratings and filtration options. Look for our Pleated + Carbon filters for superior filtration and odor control.

Make Filters2Go your local US filter supplier, we wont let you down.

What dust is made of and why you should do something about it

Many people don’t realize that dust is made up of dead skin cells, dust mite droppings and dust mite body fragments. With dead skin cells acting as a key component of dust, increased time spent indoors may actually contribute to an increase of dust in your home.

As dust accumulates, it becomes more visible to the naked eye, but that doesn’t mean it hasn’t been there the entire time. (Source:

Can’t find the furnace filter you were looking for? Contact our team via our contact page and we will happily find you a suitable replacement filter.

Have a product that you believe our customers could benefit from?
Let us know via our Contact Page, we are always looking for great US filtration products.