Save Energy – Use a Chimney Balloon to Stop Heat Escaping Up the Chimney

A chimney balloon offers a cost-effective way to prevent warm air escaping up your chimney as well as the cold air coming down into your home. Chimneys work very well when you have a lovely fire burning in your home and do a great job of removing the smoke. However, your chimney will carry on working in exactly the same way when your fire is not lit, meaning that draughts can be a problem, which results in higher heating costs.

Why use a chimney balloon?

If you’re still not sure that it is right for you, then consider some of the alternatives:

Blocking your chimney on the inside – time consuming and can cause damp
Sealing the flue from the outside – expensive and stops you using your fire
A conventional balloon will either burst or deflate very quickly
A small investment in a chimney balloon removes all of these problems, is very cost-effective and will stay in place for years if you need it to. They are made from a thin and flexible material which is designed to be strong so that it won’t perish while placed in your chimney.

Chimney balloon benefits

Installing this simple but effective product in your home will deliver a number of benefits, some of which are listed below:

Save money on your fuel bills as less heat escapes
A cleaner fireplace frees up your time to do other things
Reduces noise entering your home
Stops uncomfortable draughts coming down your chimney
A lasting, reusable and affordable way to keep your home comfortable
How do chimney balloons work?
Each balloon comes with its own hand grip and should be inserted roughly a foot inside your chimney. You then simply open the tap, inflate the chimney balloon until it grips the walls of the flue and then when it’s fully inflated, close the tap. Once fully inflated and in place, it will prevent warm air from escaping, making your home more comfortable and reducing your heating costs.


For your chimney balloon to work effectively, it is crucial that you install it properly. Here is a summary of the main points to bear in mind:

Position it 12-24 inches above the top of your fireplace
Choose a position where the walls are parallel
Position your balloon where the chimney is narrowest
Make sure you cannot see the handgrip in the fireplace
Ensure it fits well and doesn’t move around
The most important thing to mention is that you should never inflate your chimney balloon before inserting it up your chimney. This will cause damage to the balloon and will result in a poor fit.

Here is a step-by-step guide to inflating your chimney balloon:

Open up the tap
Blow in a small amount of air to allow the balloon to take shape
Place the balloon in the chimney with the white label facing you
Fully inflate the balloon using a bellows pump, mouth inflation tube or handgrip extension
Once you’ve fully inflated your chimney balloon, turn the tap off and make sure you remove any device you’ve used to help inflate it. Check that it has remained in the correct position and that it has not been over inflated so that it is too tight. If you inflate the balloon with your warm breath, it may contract a little as the air cools. This can cause the balloon to fall out of the chimney (often this happens during the first night). Top up the air after a few hours to prevent this.

Remember to put your red “remember” notice somewhere prominent so that you don’t light your fire with the chimney balloon still in place. Check it three or four times a year to make sure it is still properly inflated and in position.

Removing your chimney balloon

When you want to remove your balloon from the chimney, you should follow the steps below:

Open the tap on the handgrip and wait for it to fall from the chimney
Make sure the balloon is sufficiently deflated so that it does not scrape against the inside of the chimney as you pull it out
Roll it up in newspaper or a plastic bag for storage
Remember to remove the red “remember” label
If you try the first step and the chimney balloon doesn’t fall out, then you can remove some of the air inside by carefully pressing the handgrip against the inside of the chimney or if you are able to reach inside, you can gently expel some air by pushing the sides of the balloon towards each other.


If you’re inserting and removing your chimney balloon often then it may become damaged. Perforation can occur if the balloon has scraped against the inside of the chimney wall. It is a straightforward job to repair any holes: simply clean the area around the damaged and use packing tape or sticky tape to seal it up.

Preventing chimney damp

The design of the chimney balloon means that a small amount of air will still be able to pass by in order to keep the chimney ventilated and prevent damp building up.

What happens if you light a fire?

If you forget that you have the chimney balloon installed and light a fire underneath it, the balloon will shrivel up and stop working which means the smoke and heat from the fire will be able to escape as normal. Your chimney balloon is unlikely to go up in flames if it remains in position but of course it may drop into the fire itself and start to burn.

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