Gas-fired vacuum hot water units and gas-fired vacuum hot water boilers are all vacuum equipment, which have the characteristics of safety and no explosion risk, and can also output high-temperature hot water. However, there is still a clear difference in performance between the two.
The difference between these two types of equipment is generally reflected in the control and management of the equipment and the operational requirements of the operators. And, comparing these two, gas vacuum hot water boiler is better than gas vacuum hot water unit, the specific reason we also see below.
The gas-fired vacuum hot water boiler works by using the characteristics that the boiling temperature of water is different under different pressures. At an atmospheric pressure, the boiling temperature of the water is 100 ℃, and the vacuum hot water unit is operated within a pressure range of -0.02Mpa, and the corresponding heat medium water temperature is lower than 93 ℃. Under pressure, combustion raises the temperature of the heat medium water to saturation temperature and produces steam of the same temperature on the water surface.
The gas-fired vacuum hot water boiler adopts a unique condensation technology, so that the boiler's operating efficiency can reach 107%. Everyone has doubts here, can the operating efficiency exceed 100%? In fact, the gas vacuum hot water boiler can make full use of the boiler's own operating efficiency and the high temperature heat carried in the flue gas discharged, and then put it into the boiler for recycling, so that the boiler's operating efficiency can reach 107%. For enterprises using this type of equipment, the use of gas-fired vacuum hot water boilers can save at least tens of thousands of yuan to hundreds of thousands of yuan in fuel input costs.
Moreover, the gas vacuum hot water boiler uses gas fuel, plus the full premixed combustion technology, the gas fuel is pre-mixed with the combustion-supporting gas (that is, air) before being put into combustion, and then reaches the precise ratio before participating in the combustion. The fuel can be fully burned, the emission of nitrogen oxides is also reduced, and the environmental performance is more excellent.
Through various comparisons, it is enough to see that the overall efficiency of the gas vacuum hot water boiler is higher than that of the gas vacuum hot water unit.
Recently, Zhengzhou Fangkuai Boiler Sales Co., Ltd. traveled to Dhaka, the capital of Bangladesh, to attend the Bangladesh International Textile, Knitwear & Garment Industry Exhibition (BTKG 2026). It showcased industrial thermal equipment and system solutions adapted to the whole process of textile printing and dyeing, actively expanding the South Asian market.
Bangladesh is an important global producer and exporter of textiles and garments. As a pillar local industry, the textile sector has long-term and strong demand for high-efficiency, stable and energy-saving industrial boilers and thermal equipment, with broad market potential. This exhibition participation is an important measure for Zhengzhou Fangkuai Boiler Sales Co., Ltd. to advance its internationalization strategy and further explore overseas markets.

Relying on its technological accumulation and manufacturing advantages in the field of thermal energy equipment, the company provides targeted thermal energy solutions for local textile, printing and dyeing, garment manufacturing and other industries, helping enterprises improve production efficiency and reduce operating costs. In the future, Zhengzhou Fangkuai Boiler Sales Co., Ltd. will continue to focus on overseas market demands, continuously optimize its product and service system, facilitate the high-quality development of the global textile industry with professional and reliable products, and steadily enhance the brand’s competitiveness and influence in overseas markets.

Trust stems from quality
At the beginning of the new year, Fangkuai Boiler and a leading domestic new energy company have reached another important cooperation, successfully signing an order for a total of 500 steam tons.






