PYROCLASSIC IV is safe, economical and efficient. The PYROCLASSIC IV burns economically and safely, storing it's heat and releasing it steadily over a period of time, therefore using less wood. PYROCLASSIC IV is clean air certified (environmentally friendly) when operated correctly. No smoke or messy creosote released into the environment. Tested to AS/NZS4012:1999 and AS/NZS4013:1999. Thermal Efficiency 74% (Dryback); 65.3% (Wetback). Emissions Rate: 0.30g/kg (Dryback); 0.27g/kg (Wetback) When power failure occurs, you can still heat your house, cook your meal and heat your water. Available in a range of colours, to suit your decor and each one built by hand to last a lifetime.