Quality engineered to our proven world-class standard, Riello 40-Series balanced-flue oil burners are built for maximum uptime. Riello 40-Series high-efficiency burners not only deliver low energy consumption and quiet, worry-free performance, they're the most reliable combustion technology on the market.

And Riello 40-Series balanced-flue oil burners offer a host of advanced features - like durable, lightweight, compact construction; an integrated electronic control box with interrupted ignition; and a sealed cast-aluminum cover with a removable plug for final adjustment of the combustion air.