There are two main types of refrigerants for air water heaters, one is R22 and the other is R134a.By 2030, R22 will be completely banned in developed countries and phased out in developing countries by 2040.According to the refrigerant replacement timetable, our country will have to impose a complete ban on the production of refrigerant R22 products by 2040 at the latest.
If the installation is reliable there is no need to add refrigerant within 10 years. Refrigerant leaks are a relatively large proportion of heat pump system failures, resulting in leaks have process problems.
such as poor welding quality, friction between copper tubes or between copper tubes and the casing, etc., and the parts themselves, such as pressure gauges, high and low pressure switches, pressure relief valves, refrigerant charging check valves, etc., but also because of their own quality problems lead to refrigerant leakage.
Extended information:
Because refrigeration in fact does not want to make cold as we think, refrigeration is actually a transfer of energy, the use of refrigerant phase change of a process. Just like sprinkling water can feel cool, water from liquid into gas to absorb heat, and boiling water vapor into liquid to release heat.
The compressor compresses the refrigerant into a high-temperature, high-pressure gas, which is the refrigerant is equivalent to water vapor, and then cooled by the condenser, condensed into a high-pressure liquid refrigerant, and then through the throttling device (throttle phase to reduce the role of pressure.).