For high-rise residential buildings, solar energy is impossible. Air energy can cover a very large space.
Only instantaneous heating, water storage and gas types.
Gas installation requires drilling holes in the wall, which affects the appearance. The whole process is very troublesome. Additionally, the price of natural gas is more expensive than the price of electricity, so this may be the case. be excluded.
Instant heating type and water storage type are the two options. It is hot instantly and ready to use, no extra waste of water and electricity, intelligent variable frequency constant temperature, small size and easy to install, does not take up space, unlimited supply of hot water, l The wiring requirement is at least 4 square meters or more, and it will be affected by cold water when used in winter. Temperature affects flowof water.
The water storage type, large in size, takes up space, has high load requirements for the wall, will form scale after long-term use, and is relatively difficult to clean. It also costs maintenance fees. ask a teacher to come to your home. In winter, the amount of hot water is large, so it must be turned on for a long time for insulation and heating, which consumes a lot of electricity. It can be used by several people at the same time. When it is exhausted, the water must be refilled for heating. If it is not used, it will result in waste.
In terms of safety, the safety performance of instant heating type is much higher than that of water storage type. Normally, a reliable ground wire, anti-leakage switch and safety protection mechanism of the water heater can fully protect the safety of users.
Due to the low cCost of water storage type, there are many uneven or counterfeit brands on the market, so be careful when purchasing. If it were me, I would recommend choosing a high-power instantaneous electric water heater.
High-power instantaneous water heaters, such as 10 kW or 12 kW, require 6 square meters of wiring. You can operate a separate dedicated line. In winter, water production is very large and heating efficiency is high. very good too.