Warning over household gas heaters

20/06/04
The State Government is urging people to be aware of the health risks associated with using unflued gas heaters.
A new study funded by the National Health and Medical Research Council has revealed that unflued gas heaters, which burn gas to produce heat and have no flue or chimney to transfer combustion products outside, increase the level of indoor air pollutants such as nitrogen dioxide and carbon monoxide.
Researchers found that if these pollutants built up in a room they could pose significant health risks particularly for children, pregnant women, seniors and people with asthma or heart disease. However, high levels could be dangerous for everyone.
The most recent study involved 118 school children from 18 Adelaide schools, with 10 schools using unflued gas heating in classrooms and eight using flued or electric heating.
There were significant reductions in asthma symptoms, such as difficulty breathing, chest tightness and asthma attacks in the eight classrooms with flued or electric heating.
These findings are consistent with international study results that reveal an association between exposure to the combustion products of unflued gas heaters and increased incidence of respiratory symptoms.
Health Minister Jim McGinty said he was concerned by the findings and was urging people to take proper precautions when using an unflued gas heater.
"The State Government considers this to be a serious health risk and is taking steps to ensure people are well aware of the health risks associated with unflued gas heaters and what they can do to minimise these risks," Mr McGinty said.
"A brochure will soon be available to Western Australian households outlining ways people can minimise or avoid exposure to pollutants from unflued gas heaters."
The amount of air pollutants produced by an unflued gas heater depends on the type of heater, correct installation and use, how often it is serviced, the size of the room being heated and the amount of ventilation in the room.
People with unflued gas heaters are encouraged to:

• ensure the room that the heater in is well ventilated by having at least two opposite windows or doors open to allow fresh air to enter the room;
• never use an unflued gas heater in a bedroom;
• minimise the length of time that an unflued gas heater is used;
• ensure the heater has electronic ignition and check the heater has a safety system that shuts off the heater when there is not enough fresh air;
• have a qualified tradesperson install the gas supply, as improperly installed appliances can lead to higher levels of pollutants and may pose a fire hazard; and
• read and follow any instructions for the use of the appliance; and
• regularly inspect and maintain the unflued gas heater, as heaters that are not in good working order can release higher amounts of pollutants into the home.

People who want to buy a heater for their home are encouraged to consider flued gas, central or electric heaters or reverse cycle air conditioners.
The Western Australian Department of Environment will be conducting a study of gas heater distribution and use in WA in 2005.
Minister's office: 9220 5000