H Type Chimney Cowls

The head creates a pressure difference forcing the air in the duct to move up.

H type chimney cowls.

These use the force of the wind to spin a turbine like device increasing draft. These are constructed from h shaped pipes and work by separating the combustion gases from the turbulence and winds that bring down the drafts. It is to be mounted on gravitation based chimney ducts endings. The o h cowl is the recommend cowl for blow backs in a fire place.

When there are wind fluctuations on the chimney duct ending caused by its bad. It is to be mounted on gravitation based ventilation chimney ducts endings. 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. Static chimney cowl h type is a device which uses the dynamic force of the wind to increase the chimney draught.

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. It basically creates a vacuum in your chimney sucking fresh air up the flue and expelling it outside your home. The head creates a pressure difference forcing the air in the duct to move up. 3 3 out of 5 stars 8.

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. H cowls are another popular form of chimney cowl. 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.

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. 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. 1 16 of 38 results for h chimney cowl h roof cowl 200mm diameter anti downdraught ducting ventilation galvanised.