What is the recommended temperature rise for condensing high-efficiency gas?

The recommended temperature rise for condensing high-efficiency gas is typically in the range of 50-70°F. This temperature range is ideal because it allows the condensing boiler to operate at optimal efficiency by maximizing heat exchange while minimizing the risk of flue gas condensation, which can cause corrosion and damage over time.

When the temperature rise falls within this range, the system ensures that the heat exchanger operates effectively and enhances overall efficiency. Operating at too low of a temperature rise can lead to insufficient heat delivery and can also negatively impact combustion efficiency. Conversely, a temperature rise beyond this range might prevent the boiler from entering its condensing mode, which is where it achieves its highest efficiency levels by extracting latent heat from the flue gases. Therefore, maintaining a temperature rise of 50-70°F is critical for maximizing the performance and longevity of high-efficiency gas systems.