9″ x 9″ (23cm x 23cm) Small Square Chimney Balloon


This Chimney Balloon is suitable for oblong and square chimneys that are 7 – 10 inches  / 18 – 25cm by 7 – 10inches / 18 – 25cm, and round flues from 8 inches to 10 inches in diameter.
It comes without a mouth inflation tube – if you’ve got an airbed pump or suchlike then you won’t need one. If you haven’t got one then you’ll need to add a pump or mouth inflation tube to your order.

SKU: CBSS9B9 Category:


The 9″ x 9″ small square Chimney Balloon is designed to fit smaller standard square chimney flues, but it will also fit small oblong and round flues.

The Chimney Balloon is a carefully designed solution all your chimney draught issues. Each balloon is handmade here in Britain, by our well-trained team located at Watford Sheltered Workshop who employ disadvantaged and disabled individuals from a wide variety of backgrounds. They have excellent attention to detail and take pride in their work, with rigorous quality control. Although the Chimney Balloon seems like a simple product, there are several well-designed elements to it that ensure it functions correctly. There are copies of the Chimney Balloon on the market but these have been simply copied by reverse engineering it without properly understanding the subtitles of some of the designs. Make sure you purchase the Original and Best Chimney Balloon, for the best quality product and the best customer service!

How to use your 9″ x 9″ Chimney Balloon

Take a look at our sizing and fitting information to make sure you’re measuring the right bit of your chimney and that you’re selecting the right size. This part is a little bit of a chore but it’s worth it to make sure you get a good fit, and once in place your Chimney Balloon should provide you with years of service. We’ve got customers getting in touch saying they bought one 20 years ago, but now it’s time to get a replacement! Just think how much energy that balloon will have saved over the years…


If you live in a windy area where there is a strong updraught up the the chimney then it’s a good idea to tether the Chimney Balloon to the grate with a piece of string to make sure it doesn’t get sucked up the chimney.

How to remove your 9″ x 9″ Chimney Balloon

Please don’t just pull it down. Open the tap and let the air out before carefully removing the Chimney Balloon. It’s made of tough plastic but it doesn’t like being scraped against rough chimney walls too much.

It will probably be a  bit sooty so put it in a bag or even a Chimney Sheep wrap until you need it again. Please make sure the fire is completely cold before reinserting your Chimney Balloon.