Spinning Cowl

MAD Spinner Spinning Cowl — High-Performance Revolving Chimney Cowl

The MAD Spinner Cowl is a premium revolving chimney cowl designed to eliminate downdraught and improve chimney performance. Its spinning action enhances ventilation and encourages smoke and gases to flow upwards, making it ideal for homes with challenging flue conditions. Built from durable materials, it offers reliable protection and long service life in all weather conditions.

🔍 Overview & Purpose

• Actively prevents downdraught by rotating and deflecting wind pressure away from the chimney outlet.

• Increases upward draw in chimneys where natural draft is weak.

• Widely used for both domestic stoves and fireplaces, as well as commercial extraction and ventilation systems.

• Certified to meet strict performance and safety standards.

🛠 Construction & Components

• Cast aluminium base — strong and stable, designed to resist high winds.

• Stainless steel fins and shaft assembly — corrosion resistant, smooth, and reliable.

• Supplied fully assembled — arrives ready to fit straight out of the box.

• Secure strap fixing — ensures quick and easy installation to chimney pots or flues.

• Wind tested up to 65 mph — engineered to keep spinning effectively in exposed locations.

• Heat resistant up to 200 °C — suitable for use with wood, coal, and gas appliances.

📊 Dimensions & Fitment

• Height: 320 mm

• Width: 300 mm

• Fits flues: up to 275 mm outside diameter

• Recommended minimum flue height: 4 m for correct performance, especially with lower exhaust temperatures

✅ Performance & Usage

• Highly effective against smoke blowback and wind-induced downdraught.

• Enhances chimney ventilation, improving stove and fireplace efficiency.

• Suitable for seasoned wood, normal coal, and gas appliances.

• Not recommended for continuous use with smokeless fuels or peat due to increased acidity.

• Requires annual maintenance — should be removed and cleaned to keep the spinner operating smoothly.

• In extremely windy areas, a static anti-downdraught cowl may be a more durable long-term solution.

🌟 Benefits

• Stops smoke and fumes from entering the room.

• Improves overall chimney performance.

• Built from corrosion-resistant materials for long life.

• Supplied ready to install, with no specialist tools required.

• Suitable for a wide range of chimney and flue setups.