The simple, cost-effective way to stop chimney draughts, reduce noise and heat loss.

Special laminate of three poly plastics make it airtight, tear-resistant and long-lasting.
Shape allows some ventilation on two corners to keep the chimney dry.
Completely safe: if it is accidentally heated, it shrivels and deflates.

Inflate your chimney balloon by mouth inflation tube or air bed pump. Before lighting a fire deflate it by opening the tap and then remove it. Use it again and again.

Stops chimney draughts
Can be fitted by anyone in a couple of minutes
Stops debris, soot and bird mess
Reduces outside noise entering the room
Saves on heating bill by stopping downdraughts and updraughts
Allows a little ventilation
Sizes to fit all chimneys
Inflate to install, deflate to remove. Use again and again
The Chimney Balloon has been saving families energy and money for more than 15 years.

All sizes shown are chimney sizes and not balloon sizes. The balloon itself will be slightly larger.

Small size - Typical modern fireplace
Medium size - Victorian fireplace (Most popular size)
Large size - Georgian fireplace
The sizes are length x width.

How to choose the correct size Chimney Balloon.

Before sizing your chimney make sure your fireplace and chimney are cold with no hot ash in the fireplace. Sweeping and vacuuming your fireplace will help make it easier. If you chimney has a damper you should see a metal flap with a lever that closes the chimney.

Chimneys with a damper

The Chimney Balloon should be installed, generally above the damper. Select an area for its installation making sure that this does not interfere with the damper flap or any damper hardware. The area must have parallel or slightly sloping walls ideally with texture for the balloon to grab and lodge when inflated. The damper ledge acts to provide extra support to the weight of the balloon. A Chimney Balloon can also be installed well above the damper, so it is possible to close the damper below it.

Measure the length and depth of the chimney in the location you have selected to install the balloon. Write down the dimensions, and also note if your chimney is round, circular or rectangular in the location you are measuring.

Chimneys without a damper (a chimney with no closing mechanism)

Identify the narrowest part of your chimney within arms reach. Choose an area to install the Chimney Balloon. Make sure the area you select is not interfered with by any hardware or sharp edges in the chimney. The area must have parallel or slightly sloping walls ideally with texture for the balloon to grab and lodge when inflated.

Measure the length and depth of the chimney in the location you have selected to install the Balloon. Write down the dimensions. Measure your chimney about 30cm or so up out of sight where your Chimney Balloon will fit as shown in the diagrams. You will need the side-to-side and the front-to-back inside dimensions. We suggest you use a flexible steel tape measure (Stanley type) or two pieces of cardboard extended like wings.

It is only necessary to measure approximately and choose the Chimney Balloon of the approximate size or slightly bigger than your chimney.

How do I choose the correct size Chimney Balloon if there is a smoke shelf or smoke chamber in my chimney?

Sizing Tips

On any measured flue opening smaller than 12"X12" you should order a Chimney Balloon the exact size or no more than 3" too large in length or width.

On any measured flue opening larger than 12"X12" you should order a Chimney Balloon the exact size or no more than 6" too large in length or width.