The H Cowl is probably the ultimate static anti downdraught chimney cowl, as it completely isolates the combustion gases from the prevailing winds.
Manufactured using high quality stainless steel grade 316 makes this H Cowl suitable for use with appliances fired by oil or solid fuel. Please note that this H Cowl is NOT suitable for use with appliances fired by gas. Please see the gas versions that we have available.
Suitable for use with 200mm internal diameter pipes or chimney pots.
The H cowl has a shaft which is just slightly under the diameter of the cowl, so for example, a 125mm H Cowl will have a shaft with a diameter of around 120mm. It then slides inside the chimney or flue system.
Fitting to a prefabricated chimney system
Slide the cowl inside the chimney system. Secure in place with stainless steel self tapping screws and seal with a high temperature silicone or sealant.
Fitting to a masonry chimney stack or pot
Slide inside the chimney or pot and mortar in place.
The H-cowl is the best cowl I have had in 40 years I am exposed to westerly winds. Over 40 years have been attempting to solve the problem. Have tried several so called anti-downdraught cowls. All to no avail. The H-cowl is the answer. Over the past week have had gales and not a puff of smoke has been seen i9n the living room. Hurrah!
(17/09/2012) Geoff. Collier - Central Scotland
Cured downdraught problems I bought this product as I started having downdraught problems with the existing anti-downdraught chimney cowl. As it was for an upstairs chimney there was a limit of chimney length so couldn't extend the chimney to counteract the problem. It also stopped fumes from entering the house other chimney.
H-cowl I'm very satisfied with this item. Well built and a good price. The cowl works as aspected. Thanks for your service and quick delivery.
(04/12/2013) Henk Eggink - Germany
excellect product this is the 2hd stainless cowl I have purchased and the service and delivery were excellent. This is a first class product and is excellent value for money . well done again
(01/02/2014) unciederick - N Ireland
H Cowling The cowling is of good quality and reasonable price. The item was delivered exactly as expected and performs very well.
I can recomend this item to anyone.
(09/05/2014) Dennis Bradley - Northamptonshire
Excellect product The service/delivery were excellent. This is a first class product and was good value for money.
A Good Quality Product Excellent customer service. Quick delivery even to the far north of Scotland. A well made product that does job at a reasonable price.
(09/12/2015) Robert - Aberdeenshire
Great product Had to call for advice - very helpful and informative, fully explained fitting and positioning. This product is very well made and simple the fit, solved a long running problem of a poorly built chimney without having to extend chimney higher. Howling wind, no smoke!! Highly recommended - Thank-you.
(09/12/2016) Craig - Southern Ireland
H Chimney cowl 200mm 316 stainless steel It came well packaged. It looked huge when sitting on the floor, but once fitted it slides right down to the scross section and actually looked OK. Its not heavy at all max weight 10kg I guess. And it works - so far so good.
(07/11/2018) David - Inverness
Guaranteed Solution at a Price The H cowl is going to prevent any downdraught, no question, as the combustion gasses and prevailing wind are completely isolated from each other. The downsides are that it's physically large and, ioho, ugly. There is no fixing method as such, it needs to be cemented in place. Does the job though.
(07/05/2011) fluesystems.com - High Wycombe