14 x 24 inch Chimney Balloon Chimney Draught Excluder + FREE mouth inflation tube - NEW IMPROVED DESIGN, Made in the UK

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Exactly how much air is drawn out of your chimney depends on the ‘ stack effect’, which relates to the movement of air into and out of buildings.

Chimney balloons – a term sometimes used for chimney draught excluders – are often suggested as a method for draught proofing a chimney. This is why draught-proofing a chimney is imperative in ensuring that your indoor heating sits at a comfortable level. With a fireplace being one of the leading causes of energy loss in the home, homeowners like you are asking, "How can I make my fireplace more energy efficient?Draught-proofing your chimney is best done by installing a Chimney Draught Stopper into your fireplace. A Chimney Sheep® is a removable chimney draught excluder made from highly durable, naturally breathable Herdwick wool. One of the central themes in it is reducing waste – the suggestions I make are affordable and could save you money!

However, a major issue with chimneys is the fact that they also allow warm air to escape from your home, whether your fire is currently on or not. Chimneys are designed to draw fumes out of a property, and they continue syphoning air out whether the fire is lit or not. A chimney’s primary role is to allow the potentially toxic exhaust fumes from your fireplace or stove to be vented to the outside of your property.Read our useful hints and tips about draught-proofing and ventilation, including for owners of older and listed properties.

While fireplaces might add plenty of charm and warmth to a house, chimneys can be a source of heat loss, drawing warm air out of a space. cm in height clearance so that you will be able to easily unscrew the housing and change the filter comfortably. Chimney caps are fitted with ventilation holes so there will still be an updraught up your chimney," says Sally Phillips. Even worse is the fact that cold air from the outside can also make its way down the chimney causing a draught.If you light a fire with the Chimney Sheep in place, the fire will smoulder and not draw properly, and it’s fire retardant so it won’t burst into flames, which is fine with an open fire but to be honest the Chimney Balloon is a safer bet for gas fires. I put that up the chimney first and then squeezed the insulation as small as possible to get it into the hole and then let it expand into the chimney stack leaving the pipe to provide a small amount of ventilation.