Frequently Asked Questions
Our Products
Essentials Series Filters
Peel-and-stick activated coconut carbon filters that turn the ceiling fan you already own into a whole-room air filter. Your fan moves far more air than a standalone purifier, and Barnakl captures 250+ airborne pollutants as it runs, including dust, pollen, pet dander, mould spores, microplastics and odours.
Everyday Fresh is our best-seller and the right choice for most homes: dust, allergens, everyday odours and general air quality. Pet Fresh does everything Everyday Fresh does, with an added zeolite layer that targets the ammonia behind stubborn pet odours. If you share your home with pets, choose Pet Fresh.
Activated coconut carbon traps contaminants in its porous surface, up to 1,200 m² of surface area per gram. Because the filter sits on top of your fan blade, every rotation forces air through it rather than past it. Over 30 days the filter visibly darkens and gains 15-30% of its weight. That's the dust, chemicals and gases it has pulled out of your air.
Wipe your fan blades so they're clean and dry, peel the backing off each filter, and press one onto the top of each blade. Turn the fan on and you're done. It takes under 60 seconds per fan, no tools, no ladder gymnastics.
Choose by blade count: the 3-blade pack fits fans with 2-4 blades, the 5-blade pack fits fans with 5 or more. You need one pack per fan. If you're starting out, prioritise the rooms you spend the most time in, bedrooms first.
Every 30 days. You'll know it's time when the filter looks visibly loaded or odours start creeping back. Subscribers get fresh filters delivered on schedule with 25% off, so there's nothing to remember.
No. They're completely odourless. They remove odours from your home rather than masking them with a scent.
No. Each filter weighs just 6 grams and won't affect your fan's rotation. Airflow performance was tested and unaffected.
No. When it's time to replace a filter, you simply peel it away from the Velcro base. If you ever want to remove the base itself, peel it off slowly and it won't damage the blade surface.
Yes. Barnakl filters are made with natural activated coconut carbon. They're odourless, release nothing into your air, and use no electricity. They only take things out.
Yes. In a 2023 study by Aerosol Research and Engineering Laboratories (ARE Labs Inc.), Barnakl filters removed up to 99.94% of mould spores from the air within 3 hours, and cut VOCs including toluene and acetone by over 38% within 2 hours. You can read more on our Science page.
Not at all. Barnakl works well on its own, and alongside an existing purifier it shares the workload, which can extend your purifier's filter life too.
A HEPA unit cleans the air that passes directly through it, one pass at a time. Barnakl rides your ceiling fan, so the whole room's air passes through the filters again and again while the fan runs. It's a different approach: independently lab-tested to pull airborne particles, VOCs, mould spores and microplastics out of the air in your room.
No. Washing activated carbon reduces its effectiveness and damages the filter material. Replace on schedule for consistent results.
No. They work with the fan you already run, so they add nothing to your energy bill. That's one of the big savings versus a plug-in purifier.
Range Hood Filters
A multi-stage upgrade for your recirculating range hood. An activated carbon layer absorbs cooking odours and VOCs, while a non-woven poly layer captures the fine particles (PM2.5) that a standard grease filter misses.
Remove your existing grease filter, attach the Barnakl filter behind it, and reinstall. No tools needed, and it sits invisibly inside your hood.
Each filter measures 7" x 4.5" and is designed to sit behind a standard grease filter.
Two multi-stage Barnakl Range Hood Filters.
Barnakl Range Hood Filters are designed for recirculating hoods, where air is filtered and returned to your kitchen rather than vented outside.
Replace when cooking odours start returning or the filter looks visibly loaded. [Definitive interval TBC.]
No. They're designed to filter pollutants without blocking airflow, so your hood keeps pulling as it should.
Yes. Every Barnakl order is covered by our 30-day money-back guarantee.
Subscription & Account
25% off every order, free shipping, VIP access to exclusive drops, and fresh filters that arrive right when it's time to replace. You stay in control the whole time: pause, skip, change frequency or cancel whenever you like.
Click Manage Subscription in the site footer (or Account Log in in the menu) and sign in with the email you used at checkout. From your portal you can change your next order date, delivery frequency, shipping address and payment details.
Yes. Log in to your account and skip your next order in a couple of clicks. No need to cancel if you've simply got filters left over.
Yes, anytime. Cancelling takes one click in your account portal. No phone calls, no hoops.
Yes. Essentials Series subscriptions ship every 30 or 90 days, and Range Hood subscriptions run every 30, 60, 90 or 180 days. Adjust anytime in your portal.
Yes. Email support@barnakl.com and we'll switch your upcoming order, for example from Everyday Fresh to Pet Fresh.
Log in to your account portal. Both can be changed under your subscription settings before your next billing date.
Make sure you're using the same email address as your order confirmation, that's what your account is tied to. Still stuck? Email support@barnakl.com and we'll get you sorted.
Shipping & Returns
We ship within the United States.
Orders are processed within 2-8 business days and shipped via USPS. You'll receive tracking by email as soon as your order is on its way.
Shipping is calculated at checkout and free on orders over $35. Subscription orders always ship free.
Try Barnakl in your home for 30 days. If you don't notice fresher air, better sleep and easier breathing, we'll refund you in full, no questions asked. Fewer than 1% of customers ever claim it.
Email support@barnakl.com with your order number. If your return is accepted we'll send you a return shipping label and instructions. Please don't post anything back before contacting us, unrequested returns can't be accepted.
Check your order when it arrives and email us straight away at support@barnakl.com. We'll evaluate the issue and make it right.
Once your return is approved, we refund your original payment method within 10 business days. Banks can take a few extra days to post it on their side. If more than 15 business days pass, get in touch and we'll chase it.
The fastest route is to return the item you have, then place a new order once your return is accepted.
Sale items and gift cards can't be returned.