Type of Geyser
Hot water immediately comes when you switch on the heater. Comparatively less water heating cost as the water is used fast.
Requires few minutes to heat the water. Best suited for bucket bath and shower.
Power/ Wattage of water heater is an important aspect of the water as wattage makes the water heat faster or slower. A 4kW heater will heat water quickly than 3kW water heater increasing the electricity load.
Tank Insulation Material
Glass Lined Incoloy
These are nothing but Incoloy heating elements coated with Glass. Glass coating substantially reduces the scale formation on the heating element, thereby ensuring highly efficient and long lasting heating element.
PUF insulation material is used to reduce heat loss and power consumption. This is helpful when you want to keep warm water in the tank for long time.