Rotary compressor in the application of heat pump water heater can be expected to wait. In the cold year of 2014, the sales volume of heat pump water heater compressors was 747300 units (including some non special products), an increase of 20.45% year on year, which was lower than that in the cold year of 2013.

In terms of heat pump water heater compressor products, changes have taken place. Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the National Standardization Administration, GB/T29780-2013 Totally Enclosed Motors for Heat Pump Water Heaters for Household and Similar Purposes - Compressors (hereinafter referred to as "Heat Pump Water Heater Compressors") was officially implemented on May 1, 2014. Although the standard has been issued, its role in guiding the product specification is still weak. At present, most ordinary air conditioning compressors are still installed on heat pump water heaters.

The compressor product of heat pump water heater was once expected, but from the current discovery status, scale, promotion and market acceptance of the whole machine, there is a slight gap with the industry expectation. On the whole, compared with other water heater products, heat pump water heater products are difficult to be popularized rapidly due to the poor demand and price. Industry insiders also expressed their views on this: the maturity of products and markets requires a certain amount of time to accumulate. In any case, they are still growing. With the implementation of the standards for heat pump water heater compressors, the products are also constantly standardized, which can still be expected.