H Type Chimney Cowls

H type static chimney cowl is a device which uses the dynamic force of the wind to increase the chimney draught.

H type chimney cowls.

1 16 of 38 results for h chimney cowl h roof cowl 200mm diameter anti downdraught ducting ventilation galvanised. It basically creates a vacuum in your chimney sucking fresh air up the flue and expelling it outside your home. Static chimney cowl h type is a device which uses the dynamic force of the wind to increase the chimney draught. It is to be mounted on gravitation based chimney ducts endings.

When there are wind fluctuations on the chimney duct ending caused by its bad. The head creates a pressure difference forcing the air in the duct to move up. These use the force of the wind to spin a turbine like device increasing draft. As the wind passes down the top of the external parts it creates a wind flow that exhausts the smoke and fumes out of the lower exits.

This cowl is strap fitted and hand made from 316 stainless steel and is suitable for all fuels. Normally caused by low chimney stacks and obstructions that can be around the chimney pot and is mostly noticeable when winds are blowing in a certain direction. The most popular type of chimney cowl is the h style or h pot and it has a definite advantage over other caps because it stabilizes the draft so your fireplace works more efficiently. The traditional h cowl is designed to ensure that no matter what the wind direction or strength the flue or chimney is protected from downdraught.

It is to be mounted on gravitation based ventilation chimney ducts endings. Another type of cowl is called a rotating spinning chimney cowl. Cowls serve to prevent strong winds driving the smoke escaping up the flue back down into the room of the heating appliance filling the room with toxic gasses and soot. 3 3 out of 5 stars 8.

The o h cowl is the recommend cowl for blow backs in a fire place. They have been designed to specifically combat the issue of downdraught stabilising the draught and preventing smoke and potentially dangerous gases from being forced back into your home. Chimney cowls are also known as chimney caps and are referred to as cowls due to their overall shape being reminiscent of a monk s robe or cowl.