You wouldn't put up with a hole in the wall or the ceiling yet this is exactly what you have with an open chimney. The Chimney Balloon saves on energy bills by preventing valuable heat from going straight up the chimney.
It is made to be quick to install yet allows removal for reuse again and again - designed for people who like to light a fire at the weekend. It's completely safe (if heated shrivels up) and also stops debris, soot and bird mess.
1. Remove the black rubber pump adaptor and attach the mouth inflation tube
2. Semi-inflate the balloon
3. Place the semi-inflated balloon in position in the flue or chimney
4. Fully inflate the balloon and close tap
Note: Inflate the balloon until it feels gently firm, like prodding your thigh, but not drum-taut. Blowing your hardest may cause the welded seals to fail. Test it by pushing the handgrip upwards - it should feel springy.
With so many chimney types, there is no simple rule for where the balloon is positioned. Look for the lowest (most accessible) place where there are two parallel walls for the balloon to grip when inflated (in the chimney gathering below the flue or higher up inside the flue/chimney proper). Then measure the width + depth and select a balloon to suit.
BRSIA Test Results
In 2013, BSRIA developed an analytical procedure to develop robust test data in measuring the energy savings of the Chimney Balloon ™
product. Engineers conducted a series of laboratory tests and wrote a detailed report.
Average reduction of airflow around 87% - from 40m3/h to 5m3/h.
Total energy and cost savings:
a. Scenario 1 (3-bed semi) - 4267kWh or £197 per annum
b. Scenario 2 (4-bed detached) - 6454kWh or £267 per annum