Healthy Environment, Healthy Community, Healthy Business

Environment Protection Authority

Environmental Issues

Air - NSW overview

Don't let your fire smoulder overnight

In winter, the highest concentrations of fine particles in the air occur after midnight. This suggests that most of fine particle pollution is caused by wood heaters left to smoulder over night.

One of the worse things you can do is to dampen down your fire overnight.

Leaving your heater overnight at the minimum air setting with a full firebox generates very little heat and lots of smoke causing pollution outside and inside your home.

With the air intake closed, the fire is starved of oxygen and cannot burn properly.

Unless your heater is specifically designed for continuous operation (burning bright overnight), let it go out overnight. Rely on your home's insulation to hold in enough heat for the night. Spend money on insulation rather than fuel – it is better for the environment and your health.

If you have a new certified heater designed to burn overnight, follow the manufacturers instructions carefully. Don't cram the firebox full. When the last load is put in, run the heater at maximum for half an hour, then adjust it to the overnight setting.

Page last updated: 18 June 2013