One 3-in-1 cartridge holds the pre-filter, True HEPA 13, and activated carbon. Twist the base open and swap it in about 30 seconds, no tools. Plan on a fresh filter every 6 to 12 months.
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Your first replacement is free with a new purifier. No subscription is ever required to buy.
Free shipping Cancel anytime, no lock-in Fits every Air & Oak Air Purifier
One cartridge, three jobs
What's inside the filter.
No separate parts to track or stack. The whole filtration system lives in one cartridge you swap as a single piece.
Layer 1
Pre-filter
Catches the big stuff first, hair, lint, and visible dust, so the HEPA layer lasts longer.
Layer 2
True HEPA 13
Captures up to 99.9% of fine particles down to 0.3 microns, including pollen, dander, and smoke.
Layer 3
Activated carbon
Absorbs household odors, cooking smells, and pet smells, so the air smells as clean as it feels.
About 30 seconds
Swapping it is simple.
Twist the base
Turn the bottom base to unlock it. No tools, no buttons.
Lift out the old filter
Pull the spent cartridge straight out and recycle the packaging.
Drop in the new one
Seat the fresh cartridge, twist the base closed, and you're done.
Filter questions
Good to know.
How often do I replace the filter?
Every 6 to 12 months, depending on use and how dusty your home is. The 1-year supply gives you two filters, which covers most homes for a full year.
Is a subscription required?
Never. You can buy a single filter or a one-time 1-year supply anytime. The subscription is optional, saves you 10%, and you can skip, change, or cancel from your account in about 30 seconds. No lock-in.
Is my first filter really free?
Yes. Every new Air & Oak Air Purifier comes with your first replacement filter free, so you're covered well past the first swap.
Will this filter fit my purifier?
One filter fits every Air & Oak Air Purifier. There's only one cartridge, so there's nothing to match up or measure.
Never run a tired filter.
Join the Filter Club and save 10%, or grab one anytime. Cancel whenever you like.
