What is the recommended stack temperature above ambient temperature?

The recommended stack temperature above ambient temperature being in the range of 270-370 degrees Fahrenheit is based on optimizing combustion efficiency and reducing emissions in oil heating systems. Maintaining the stack temperature within this range ensures that the system operates efficiently while minimizing the risk of condensation within the stack, which can lead to corrosion and other issues.

A stack temperature that is too low could result in flue gases not being hot enough to rise efficiently, which in turn can cause buildup and potential blockages. On the other hand, excessively high stack temperatures can indicate that fuel is being wasted, leading to increased operating costs and potentially harmful emissions. Therefore, the range of 270-370 degrees balances these considerations effectively, ensuring that the heating system is operating safely and economically.