A household appliance (100, 200), comprising: a diverter valve assembly, the diverter valve assembly comprising: a housing defining a water diversion chamber therein, and provided with a water inlet (41, 112), a water return port (44, 113), a first water outlet (43, 114), and a second water outlet (42a, 42b, 115); and a diverter valve (4, 12) provided in the water diversion chamber and capable of partitioning the water diversion chamber into a first water diversion chamber and a second water diversion chamber, the first water diversion chamber being communicated with the water inlet (41, 112), the diverter valve (4, 12) being rotatable in the water diversion chamber to (a) communicate the first water diversion chamber with the water inlet (41, 112) and the first water outlet (43, 114) when water needs to be heated, and (b) communicate the second water diversion chamber with the second water outlet (42a, 42b, 115) and the water return port (44, 113), or to block the water inlet (41, 112) from the first water outlet (43, 114) and communicate the first water diversion chamber with the water inlet (41, 112) and the second water outlet (42a, 42b, 115) when water does not need to be heated; a chamber body (1, 20) defining a chamber therein; a spray arm (21, 22, 23, 30, 31, 32, 33) at least partially provided in the chamber, the second water outlet (42a, 42b, 115) being connected to the spray arm (21, 22, 23, 30, 31, 32, 33); and a heating device (3, 40) connected to the first water outlet (43, 114) and the water return port (44, 113). a diverter valve assembly, the diverter valve assembly comprising: a housing defining a water diversion chamber therein, and provided with a water inlet (41, 112), a water return port (44, 113), a first water outlet (43, 114), and a second water outlet (42a, 42b, 115); and a diverter valve (4, 12) provided in the water diversion chamber and capable of partitioning the water diversion chamber into a first water diversion chamber and a second water diversion chamber, the first water diversion chamber being communicated with the water inlet (41, 112), the diverter valve (4, 12) being rotatable in the water diversion chamber to (a) communicate the first water diversion chamber with the water inlet (41, 112) and the first water outlet (43, 114) when water needs to be heated, and (b) communicate the second water diversion chamber with the second water outlet (42a, 42b, 115) and the water return port (44, 113), or to block the water inlet (41, 112) from the first water outlet (43, 114) and communicate the first water diversion chamber with the water inlet (41, 112) and the second water outlet (42a, 42b, 115) when water does not need to be heated; a housing defining a water diversion chamber therein, and provided with a water inlet (41, 112), a water return port (44, 113), a first water outlet (43, 114), and a second water outlet (42a, 42b, 115); and a diverter valve (4, 12) provided in the water diversion chamber and capable of partitioning the water diversion chamber into a first water diversion chamber and a second water diversion chamber, the first water diversion chamber being communicated with the water inlet (41, 112), the diverter valve (4, 12) being rotatable in the water diversion chamber to (a) communicate the first water diversion chamber with the water inlet (41, 112) and the first water outlet (43, 114) when water needs to be heated, and (b) communicate the second water diversion chamber with the second water outlet (42a, 42b, 115) and the water return port (44, 113), or to block the water inlet (41, 112) from the first water outlet (43, 114) and communicate the first water diversion chamber with the water inlet (41, 112) and the second water outlet (42a, 42b, 115) when water does not need to be heated; a chamber body (1, 20) defining a chamber therein; a spray arm (21, 22, 23, 30, 31, 32, 33) at least partially provided in the chamber, the second water outlet (42a, 42b, 115) being connected to the spray arm (21, 22, 23, 30, 31, 32, 33); and a heating device (3, 40) connected to the first water outlet (43, 114) and the water return port (44, 113).