A washing appliance (100; 1000) for washing items, having a hydraulic circuit comprising at least one tank (140, 112; 1012) adapted to store a predetermined amount of liquid, at least one heating element (142, 175) provided at least partly inside said at least one tank (140, 112; 1012) adapted to heat said predetermined amount of liquid to at least one predetermined temperature, a water inlet adapted to receive water from a water supply network, and a descaling apparatus, the descaling apparatus comprising: - a descaler chamber (192; 705; 1005) having a housing portion (205; 730; 1032) adapted to house a descaler product container (305; 710) containing a descaling agent (310; 750) and a mixing portion (225; 760, 1035) adapted to contain a mix of water and a predetermined amount of the descaling agent (310; 750), the housing portion (205; 730; 1032) being fluidly connected to the mixing portion (225; 760, 1035) of the descaler chamber (192; 705; 1005), and - an inlet pipe (194; 1094) fluidly connecting the water inlet to the descaler chamber, the inlet pipe (194; 1094) being adapted to provide water into the descaler chamber (192; 705; 1005), wherein the descaling apparatus further comprises: - an outlet pipe (198; 1098) fluidly connecting the mixing portion (225; 760, 1035) and the at least one tank (140, 112; 1012), the outlet pipe (198; 1098) being adapted to drain the mix of water and predetermined amount of descaling agent (310; 750) from the mixing portion and provide it to the at least one tank, and - a spraying element (230; 770; 1040) provided in the mixing portion (225; 760, 1035) of the descaler chamber and fluidly connected to the inlet pipe (194; 1094), the spraying element (230; 770; 1040) being adapted to spray water towards the housing portion (205; 730; 1032), whereby the housing portion (205; 730; 1032) of the descaler chamber (192; 705; 1005) further comprises a top aperture (210; 735; 1010) opposite to the aperture (217; 733), said top aperture (210; 735; 1010) having a size and shape adapted to allow the insertion of the descaler product container (305; 710) into the housing portion (205; 730; 1032), and whereby the washing appliance (100; 1000) further comprises a casing and wherein the top aperture is exposed on a panel of the casing. - a descaler chamber (192; 705; 1005) having a housing portion (205; 730; 1032) adapted to house a descaler product container (305; 710) containing a descaling agent (310; 750) and a mixing portion (225; 760, 1035) adapted to contain a mix of water and a predetermined amount of the descaling agent (310; 750), the housing portion (205; 730; 1032) being fluidly connected to the mixing portion (225; 760, 1035) of the descaler chamber (192; 705; 1005), and - an inlet pipe (194; 1094) fluidly connecting the water inlet to the descaler chamber, the inlet pipe (194; 1094) being adapted to provide water into the descaler chamber (192; 705; 1005), wherein the descaling apparatus further comprises: - an outlet pipe (198; 1098) fluidly connecting the mixing portion (225; 760, 1035) and the at least one tank (140, 112; 1012), the outlet pipe (198; 1098) being adapted to drain the mix of water and predetermined amount of descaling agent (310; 750) from the mixing portion and provide it to the at least one tank, and - a spraying element (230; 770; 1040) provided in the mixing portion (225; 760, 1035) of the descaler chamber and fluidly connected to the inlet pipe (194; 1094), the spraying element (230; 770; 1040) being adapted to spray water towards the housing portion (205; 730; 1032), whereby the housing portion (205; 730; 1032) of the descaler chamber (192; 705; 1005) further comprises a top aperture (210; 735; 1010) opposite to the aperture (217; 733), said top aperture (210; 735; 1010) having a size and shape adapted to allow the insertion of the descaler product container (305; 710) into the housing portion (205; 730; 1032), and whereby the washing appliance (100; 1000) further comprises a casing and wherein the top aperture is exposed on a panel of the casing.