This hotel swimming pool project is a standard swimming pool of 250 square meters. It uses 4 sets of 2.6KW (3 uses and 1 preparation) AQUA circulating water pumps and 3 sets of Q1200 filter sand tanks to make the filtered pool water clean and transparent; using Hymatic medium-pressure ultraviolet HWF- 420-12-Cooperate with 3 dosing pumps to quickly and efficiently sterilize the swimming pool water and keep the swimming pool water clean and hygienic; in the season when the swimming pool water needs to be heated, the swimming pool adopts 3 AQUA B-22 series air source heat pumps, and the swimming pool is 375 square meters. The water is heated. The heating capacity of each heat pump can reach 100KW, no matter how the temperature changes, it can also ensure that the stable heat is delivered to the swimming pool. In this way, the water temperature can be kept constant no matter how the temperature changes throughout the day throughout the year, and the maximum energy saving effect can be achieved at the same time.