4.8/5 based on 1,361+ reviews

FanFilter delivers peace of mind

Your home's air is up to 5× more polluted than the air outside — and your ceiling fan has been recirculating all of it. Barnakl's activated coconut shell carbon filters attach to your fan blades in under 60 seconds and immediately start trapping the mold, allergens, VOCs, and particles you've been breathing in every day. Cleaner air for less than 25 cents a day.

Tackless Allergy Symptoms
Improved Sleep Quality
Risk Free 60-Day Returns
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Rated 4.8/5 based on +10,839 Total Ratings

Why Fan Filter is In Thousands Of Homes

Review by Carolyn B
Carolyn B, 41 Verified Buyer
I'm 67 years old and I've had a CO detector in my house since they invented them. Thought I was covered. My son came home for Thanksgiving and made me swap it out for a CarbonIQ because mine was 9 years old. Felt like a waste of money honestly. It alarmed at 36 PPM on a Tuesday in January. Water heater was backdrafting. My doctor later told me the fatigue I'd been writing off as 'just getting older' was likely low-level CO exposure. Buy the detector. Don't be like me."

Product Name

69.99 $119.99

Purchased on March 14th, 2025

Review by Gerald F
Gerald F, 35 Verified Buyer
Woke up at 3am to the alarm. 52 PPM. Garage door had been left slightly open with my truck running on a cold start timer I forgot I'd set. My wife and I sleep on the ground floor. I don't have more to say than that."

Product Name

69.99 $119.99

Purchased on March 14th, 2025

Review by Tyler and Amber S
Tyler and Amber S, 42 Verified Buyer
Moved into a 1987 ranch house in October. Home inspector said everything looked fine. Dewlora alarmed twice in the first two weeks — both times tied to the furnace struggling in cold weather. Previous owners had no idea. HVAC tech said another winter and it could have been a very different story. First smart purchase we made in this house.

Product Name

$69.99 119.99

Purchased on March 14th, 2025

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We stand behind everything we make — completely. If you're not satisfied for any reason, simply reach out within 90 days and we'll refund you in full, no questions asked. Your purchase is also protected by a 3-year warranty against defects in materials and workmanship. That's our guarantee

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90 Days Returns
3 Years Warranty
100% Refund

Money-Back Guarantee

We stand behind everything we make — completely. If you're not satisfied for any reason, simply reach out within 90 days and we'll refund you in full, no questions asked. Your purchase is also protected by a 3-year warranty against defects in materials and workmanship. That's our guarantee

Get Yours
90 Days Returns
3 Years Warranty
100% Refund