What are the disadvantages of gas wall-hung boiler?

1. Double-tube gas wall-hung boiler: due to the lack of plate replacement for secondary heat exchange, domestic hot water is unstable, sometimes cold and sometimes hot;

2. Plate gas wall-hung boiler: the secondary heat exchange of plate heat exchanger solves the problem of hot and cold domestic water, but in areas with high water hardness, plate heat exchanger is easy to scale and block;

3. Condensed gas wall-hung boiler: powerful and energy-saving, but expensive;

4. The service life of the heating furnace is about 15 years, and the renewal cost shall be borne by the user.

5. When there is no one at home, it is necessary to keep the operation at a low temperature of about 4℃ (anti-freezing), which consumes a certain amount of energy and expenses.

6. The heat pump of ordinary gas-fired wall-hung boiler often starts burning with flame, which is noisy and has certain air pollution problems.

7. The failure rate caused by improper use is higher than that of central heating. (Boiler and pipeline scaling, water running, radiator not hot, etc. )

8. Some imported brands of wall-hung boiler accessories have higher prices.