This air has to be replaced, so cold air is pulled in from around doors, windows, and other leaky parts of the house creating the cold draughts that we notice. If you block the chimney with a Chimney Sheep, you will save around 5% of household heat loss and cut down on all those other draughts into the Bargain.
This product would be ideal for homeowners looking to prevent wildlife from gaining access to their chimneys during colder weather.
