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Companies

Barnakl

Carbon filters that turn ceiling fans into air purifiers

Raised to date

$5.1M

of $5.1M offered across 1 Form D filing

Investors
23
Last filed
Apr 8, 2026

About

Barnakl sells peel-and-stick activated coconut-shell carbon filters that attach to ceiling fan blades and turn an existing fan into a whole-room air purifier. The filters capture dust, mold spores, pet dander, microplastics and odors as the fan runs, and are sold on a replaceable 30-day cycle with a subscribe-and-save option. The company is family-owned by two brothers and says its filters are sourced and assembled in Wisconsin. Barnakl states its air-sweeping technology has been independently tested by Aerosol & Engineering Laboratories (ARE Labs).

Instead of selling a standalone purifier, Barnakl piggybacks on the airflow a ceiling fan already moves (3,500-10,000 CFM versus 20-450 CFM for a typical purifier), delivering whole-room filtration silently for a fraction of the cost and with no additional energy use.

Funding

  • EquityFiled Apr 8, 2026Form D
    $5.1M/ $5.1M

Product

Barnakl Ceiling Fan Filters

Consumer air filtration product

Lightweight peel-and-stick activated coconut-shell carbon filters that adhere to the top of each ceiling fan blade and trap airborne particulates and odors as the fan spins.

  • Peel-and-stick installation in under 60 seconds, no tools required
  • Activated coconut-shell carbon with roughly 1,200 m2/g of surface area
  • Captures dust, mold spores, pet dander, microplastics and odors

Built for

Health-conscious households, allergy sufferers and pet owners in the US consumer market

People on file