Five adults were severely burned by a biofuel heater in Queensland in June 2014.

Flame injury occurred when the operator was refilling the appliance with ethanol.

Average burn was 24.7% total body surface area, and three adults spent an average of 31 days in ICU.

An Australian Standard does not regulate these heaters, and so their safety and quality is unknown.

Cost of admission can exceed $200,000 for patients with this degree of burn.