What is regarded as a good percentage for thermal efficiency in boilers?

A thermal efficiency of 85% is considered a good benchmark for boilers. This percentage indicates that the boiler converts 85% of the energy from the fuel it consumes into useful thermal energy, efficiently minimizing energy waste. Boilers with higher thermal efficiencies reflect better design, technology, and operational practices, which are crucial for improving energy efficiency in industrial and commercial settings.

When assessing boiler performance, it's important to note that while some modern systems may reach or exceed efficiencies of 90%, achieving this level consistently across various conditions and operating practices can be challenging. Therefore, 85% is a widely accepted figure that balances efficiency with practicality, representing a solid performance standard for many boiler applications.