1Offer Claimed
Your first shipment of air filters is free!

Blow Air Filters Off Your To-Do List

Breathe easier with Second Nature. Subscriptions starting at $12 per shipment.

Try It Out For Free  →

How It Works

Our subscriptions take just minutes to set up and will leave you breathing easier.


Our easy process helps you select the right filters.


Customize your preferred delivery schedule.


Swap out the old with the new on time, every time.


Replace your filters without ever leaving the house.

Pick Out My Filters  →

Your first set of filters is free. After that, we’ll only charge you when filters are shipped.

Yup, Your First Set Is Free

Enjoy your first set of air filters on the house. No gimmicks, no strings, just a gift from us to you—because everyone should enjoy healthier air.

Get My Free Filters  →

Who’s Obsessed With Air?

You guessed it. We are.

At Second Nature, it’s our mission to make your home a healthier home. So we set out to create the world’s best filters delivered right to your door. With our convenient subscriptions, we make taking care of your home easier than ever. In fact, it’s practically Second Nature.

Learn About the Science of Air  →

A Fresh Take on Fresh Air

When was the last time you changed your air filters? Chances are it wasn’t soon enough. Regularly replacing your air filters is the best way to maintain your HVAC system—typically one of the most expensive parts of your house.

With a Second Nature subscription,

you’ll never miss a filter change again.

What's so great about
replacing my air filters?

Find Out →

Don’t Just Take Our Word for It...

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