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Home Service FAQs FAQ of gas-fired(oil-fired) boilers What are condensing boilers?

What are condensing boilers?

20 Dec 2019

Condensing boilers can achieve up to 98% thermal efficiency, compared to 70%-80% with conventional designs (based on the higher heating value of fuels). Typical models offer efficiencies over 90% when the return water temperature is at 110 ºF or less; the lower the return water temperature, the higher the efficiency gain.

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