Combustion heating, as the name implies, is the transfer of heat through the combustion of fuel. This is an original method of heating, with coal, gas, biomass combustion, and others being common examples. Coal heating, in particular, requires extensive maintenance, leading to many regions implementing coal bans due to environmental concerns. Regardless of the fuel source, combustion heating releases emissions into the air, including carbon monoxide, dust, sulfur gases, and residues, and its thermal efficiency is extremely low.

Contact heating methods commonly employ resistance wires and electric heating rods, which directly contact the liquid during heating. This method has limitations, as the heating temperature typically reaches 300℃ and prolonged heating can lead to the accumulation of dirt, potentially causing pipe破裂 issues over time. Additionally, the contact method is prone to electric leakage and electric shock hazards, posing risks to personal safety. Therefore, the quality of the electric heating tubes is crucial. Furthermore, while the thermal efficiency of electric heating tubes is slightly higher than that of coal or gas, there is still some heat loss into the air.

The electromagnetic induction heater is a non-contact heating method, similar in principle to the induction cooktop. By utilizing electromagnetic induction technology and magnetic transformation, it generates eddy currents within the metal cylinder, thereby producing heat internally to achieve the heating purpose. This technology maximizes the utilization of thermal efficiency, reaching 96%, making it one of the most efficient heating methods currently available. The non-contact nature of the heating method ensures safety, and it boasts a long lifespan with simple and cost-effective maintenance. It is easy to operate, capable of high-temperature heating, and widely applicable in industrial applications, making it an excellent energy-saving solution.