Type

Specialty

Excellence

shortcoming

Others

Transflux heater

Water transflux  hole of the heater

Large power, quick heating

Water must flow

It can be used to heat tap water supply

Immerging

heater

Heater immerge at bottom of water tank

It can be used to heat quiet water

It is long time to heat the water in whole tank

Used to maintain temperature of water

Bottom heater

Heater put under bottom of water tank

It can be used to heat quiet water

It is long time to heat the water in whole tank

Used to maintain temperature of water