Kfonla Solar Attic Exhaust Fan 25W — 430 CFM, 2500 RPM, IP67 Weatherproof

The Kfonla 25W Solar Powered Fan is a wire-free roof exhaust fan that delivers up to 430 CFM of ventilation at 2500 RPM, using a 25W monocrystalline panel for automatic, maintenance-light airflow in attics, greenhouses, sheds and small buildings.

Whether you want to lower attic temperatures, remove humidity from a greenhouse, or keep a chicken coop well-ventilated without adding to your energy bill, this compact solar attic fan provides continuous, automatic airflow with no batteries or grid connection. Engineered for all-weather use, the unit combines an efficient motor and blade design with corrosion-resistant materials and a 30° integrated panel tilt to maximize sun exposure and long-term reliability.

How does this fan improve ventilation in small to medium spaces?

The Kfonla fan moves a high volume of air — up to 430 CFM — to reduce heat buildup, stale air, and moisture in spaces up to about 500 sq. ft. Its optimized blades and 2500 RPM motor provide steady extraction while keeping noise low around 43 dB.

• High airflow: 430 CFM for quick air exchange
• Quiet operation: roughly 43 dB for minimal disturbance
• Effective coverage: suitable for attics, sheds, garages, and small workshops

Will this work without batteries or electrical wiring?

Yes — the unit is fully solar powered by a 25W monocrystalline panel and operates automatically with daylight. It starts when there’s sufficient sunlight and shuts off at dusk, so installation requires no wiring and generates zero running costs.

• 25W high-efficiency solar panel, monocrystalline
• No batteries, no AC wiring — plug-free operation
• Auto on/off based on available sunlight for hands-off use

Is the fan durable enough for outdoor roof mounting and harsh weather?

The Kfonla fan is built from weather-resistant ABS housing and corrosion-resistant aluminum mesh, with IP68-rated motor protection and an IP67-rated solar panel. A one-piece design with a 30° tilt helps shed water and optimize sun exposure for long-life, low-maintenance performance.

• IP68 motor protection; IP67 solar panel sealing
• ABS housing and aluminum guard resist corrosion and UV
• Integrated 30° tilt for better sunlight capture and runoff

How easy is it to install and keep safe for animals or kids?

Installation is designed for a DIY-friendly, wire-free process: cut a 4.5" opening, secure the included hardware, and position the panel toward direct sun. Safety features include double-layer plastic nets and a reinforced aluminum guard to prevent birds, rodents, or small hands from contacting the blades.

• Complete hardware kit and step-by-step instructions included
• Cutting template for a standard 4.5" opening keeps install simple
• Double-layer netting and reinforced guard for animal and child safety

Who this is for: The Kfonla 25W Solar Powered Roof Exhaust Fan suits homeowners, hobby farmers, and small-business owners who need reliable ventilation without new wiring or higher utility bills. It’s ideal for people retrofitting older outbuildings, improving greenhouse air exchange, or keeping animal shelters comfortable. If you want a quiet, durable, energy-free ventilation solution that installs quickly and resists the elements, this fan was designed for that purpose.