The invention relates to the field of water heaters, and discloses a heat pump water heater. The heat pump water heater comprises an outer shell (6), a bracket (2), an end cover (1) and a filter screen (3). The bracket (2) is provided with a wind opening (2-1). The end cover (1) is spaced apart from the bracket (2) to form an operation opening (4). The filter screen (3) is located between the bracket (2) and the end cover (1) and covers the wind opening (2-1). The bracket (2) is provided with a sliding groove (5), and the filter screen (3) can slide in or out of the sliding groove (5) throughthe operation opening (4). Through the technical scheme, the sliding groove is formed between the bracket and the end cover, the filter screen can be installed in the sliding groove and can slide outor slide into the sliding groove from the operation opening, the filter screen is disassembled and installed without disassembling other structures, the operation is more convenient, and the disassembly, cleaning and replacement of the filter screen are convenient.