Which is better, the traditional water dispenser or the externally heated water dispenser?

In the traditional domestic drinking machine, the heating of water is completed by the built-in hot liner. According to reports, it is this kind of liner that highlights the harm of traditional water dispensers:

Boiling for a long time produces "thousand boiling water": drinking water will form "thousand boiling water" after repeated heating in a hot container. This kind of water contains heavy metals, arsenic compounds and other harmful substances, which will endanger gastrointestinal health if drunk for a long time.

Scale becomes "additive": According to the report issued by the national environmental protection inspection department, if the inner container of traditional drinking fountains is not cleaned for more than 3 months, a large number of bacteria, residues and even red worms will grow and attach to the inner wall of hot containers, becoming toxic "additives". After these substances enter the human body, they will cause diseases of digestive, nervous, urinary and hematopoietic systems.

The hot liner is made of "nitrate": the hot liner is mostly made of stainless steel and aluminum shell. The test shows that the nitrite content of iron, aluminum and ammonium in water will increase obviously after long-term heating, and nitrite is a well-known carcinogen.

The "king of electricity consumption" of household appliances: taking 1 liter hot water as an example. Without turning off the power supply, the traditional domestic water dispenser with a power of 0.5 kW consumes 1.8 kWh of electricity every day, which is precisely because of its "on-off" working principle, which invisibly causes more than 90% energy waste.