1、電熱水鍋爐http://www.shijilu.cn/水垢的導熱性能極差，其導熱系數比一般鍋爐剛才小幾十倍，甚至幾百倍，鍋爐結構后會使受熱面傳熱情況惡化。排煙溫度升高，降低鍋爐熱效率，浪費燃料。
Electric water boiler scale thermal performance very poor, its thermal conductivity is smaller than the average boiler just a few times, even hundreds of times, the situation will worsen after the heating surface heat boiler structures.Exhaust gas temperature, reducing the thermal efficiency, waste fuel.
2、電熱水鍋爐正常運行時，金屬受熱后很快將熱量傳遞給鍋爐金屬，壁面與鍋爐水的溫差30--100℃之間，結生水垢后金屬受熱面吸收的熱量由于受到水垢層阻礙很難傳遞給鍋爐，因而壁溫急劇升高，強度急劇下降，當鍋爐內生了3mm后的水垢時，鋼材溫度有280℃上升到580℃而抗拉強度有400兆帕（Mpa）下降到100兆帕(Mpa)，引起鋼材內部組織變化。
Electric water boiler is operating normally, and soon after the metal is heated to transfer heat to the boiler metal, between the wall and the boiler water temperature difference 30--100 ℃, knot raw scale metal heating surface after heat absorption is difficult due to the scale layer hampered passed to the boiler, thus a sharp rise in the wall temperature, a sharp decline in strength, when the boiler scale 3mm after birth, the steel temperature rose to 280 ℃ and 580 ℃ tensile strength of 400 MPa (Mpa) down to 100 megabytes Pa (Mpa), causing changes in the internal organization of the steel.

3、由于電熱水鍋爐產熱不良是蒸發量下降，減小鍋爐出力，出力小的管子流通面積減小，增加水循環阻力，嚴重時將管子完全堵死造成爆管事故。
Because electric water boiler heat production decreased adverse evaporation, reducing the boiler output, output of small tubes circulation area is reduced, increasing the circulation resistance, serious tubes completely blocked pipe explosion caused the accident.

4、為了電熱水鍋爐http://www.shijilu.cn/除垢需經常停爐洗爐增加檢修費用，由于經常采用機械方法和化學方法，會使受熱面損傷，縮短鍋爐的使用年限，結垢十分嚴重時甚至是鍋爐報廢。
For electric water boiler furnace shutdown need regular cleaning maintenance costs increase, due to the frequent use of mechanical and chemical methods, heating surface damage will shorten the useful life of the boiler, scaling is very serious or even scrapped boiler.