Question

Hard water is harmful for boilers. why?

Answer 1

hiii mate........

hard water is water that contains a high concentration of minerals , usually calcium and magnesium. these minerals do not volatilize with the steam and continues to build up in the boiler , precipitating out on the watersides as scale. scale is an effective insulator , requiring more energy to heat the water through.
more energy equals more heat , which can lead to blisters , sags and bags in boiler tubes , which will eventually rupture , possibly catastrophically.
hence, using hard water in boilers can lead to boiler explosions.

hope it helps you............