What is the function of a Flue Gas Recovery (FGR) system?

A Flue Gas Recovery (FGR) system is designed primarily to recover and reuse exhaust heat from gas appliances. This function is essential because it enhances the overall efficiency of the system by capturing heat that would otherwise be lost through exhaust gases. By reusing this heat, the FGR system can preheat incoming air or water, which results in lower operating costs and reduced energy consumption. This process not only improves energy efficiency but also contributes to environmental sustainability by reducing greenhouse gas emissions.

In contrast, improving gas mixing, reducing gas pressure in lines, or filtering impurities from gas are functions associated with other systems or components in gas appliances. Therefore, the focus of an FGR system on heat recovery distinctly sets it apart in its operational role.