Gas consumption per hour of natural gas boiler = boiler thermal efficiency / natural gas calorific value / boiler efficiency.
Through the formula we can see that the gas consumption of natural gas boilers mainly depends on boiler capacity, natural gas calorific value and boiler efficiency. However, we cannot change the boiler capacity and natural gas calorific value, only the boiler efficiency is variable.
Taking a 1 ton gas boiler with full-load operation as an example. If the calorific value of natural gas is calculated according to 8000 kcal per cubic meter, according to the difference of boiler efficiency, it is calculated that 1 ton natural gas boiler consumes about 75 cubic meters of natural gas per hour.
The higher the efficiency of boiler use, the less gas consumption, which has inverse relationship between the two. Boiler efficiency has become a key point in assessing boiler quality.




We, Zhengzhou Fangkuai Boiler Co., Ltd. (Fangkuai), are excited to announce our participation in the Indonesia International Heating Technology Exhibition 2025. We will be showcasing our advanced boiler systems engineered for higher efficiency, lower emissions, and sustainable energy performance. Join us at Booth No. B1-08 from November 5–7, 2025 at the Jakarta Convention Center.
The event brings together EXPO BOILER, EXPO BIOMASS, EXPO PUMPS & VALVES, and EXPO CRANE — creating a comprehensive platform for technology exchange and business collaboration across the industrial heating and energy sectors in Southeast Asia.
At the exhibition, we will present our integrated solutions including biomass boilers, industrial steam systems, and full power plant EPC services. Our products emphasize:
Event Details
Date: November 5–7, 2025
Venue: Jakarta Convention Center, Indonesia
Booth: B1-08
We welcome industry partners, plant owners, EPC clients, and technology scouts to visit our booth and explore collaboration opportunities. Whether you are planning a biomass retrofit, a new power plant EPC project, or seeking high-efficiency boiler equipment, our engineers will be available for technical discussions and project consultations.
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