1. Less pollution discharge and less tax payment have greatly increased the power of enterprises to save energy and reduce emissions. The environmental protection tax has established a positive emission reduction incentive mechanism of more emissions and more taxes, less emissions and less taxes, no emissions and no taxes, and high risk and low risk and less taxes, which is conducive to guiding enterprises to increase energy conservation and emission reduction efforts. " Cai Zili, Director of the Department of Property and Behavior Tax of the State Administration of Taxation, introduced that, on the one hand, environmental protection taxes are levied according to the emissions of pollution factors with the same degree of harm. The more emissions, the more taxes; On the other hand, environmental protection tax sets differentiated pollution equivalent values for pollution factors with different hazard levels, so as to realize more taxation for high hazard pollution factors.

2. Low operation cost. The energy saving effect is outstanding, the return on investment period is short, and the air source heat pump can save 70% of the energy; Compared with the solar water heater with gas, electricity and electric auxiliary heating, the annual cost is the lowest, which is less than the solar water heater (with auxiliary electric heating), about 1/3 of the gas water heater and about 1/4 of the electric water heater. Short term recoverable investment. Each 1kw of power consumption can produce 4kw of heat energy on average, and the same power consumption is about 3 times more than that of electric hot water boiler.

3. The air energy heat pump occupies a small space, and its shape is similar to that of the outdoor unit of the air conditioner. It can be directly connected to the heat preservation water tank or the heating pipe network. It is suitable for high-rise buildings in large and medium-sized cities. It is the best choice for large-scale central heating problems. There is no need for solar collectors, and the floor area is reduced by 95%. The use of solar water heating equipment can reduce the area of solar collectors by 50%, save a lot of floor area of solar collectors, and reduce the volume of hot water storage tanks. 4. The outlet water temperature of the air source heat pump is higher. When the outlet water temperature is 95 ℃, the equipment is still stable and the thermal efficiency is still high. When the water outlet temperature of air source heat pump is within 60 ℃, it is more energy-saving than ordinary heat pump; In addition, it can expand the use range of temperature and save energy at 60 ℃ - 95 ℃, thus becoming an indispensable alternative energy equipment in future industrial production.