Pellet stove with BIO100AH front ventilation; with HealthSystem air purification system. With top or rear smoke outlet. This version is in steel, available in White, Bordeaux and Cast Iron Gray. Energy Class A + Best Quality Air ™ 4 Stars Integrated HealthSystem® System Global Thermal Power 9.5 kW Useful Thermal Power 3 - 8.8 kW Efficiency 90 - 93.