HOT WATER STORAGE TYPE WATER HEATER

To provide a hot water storage type water heater advantageous on improvement of workability when performing maintenance of an accessory part attached to a hot water storage tank.SOLUTION: A hot water storage type water heater includes: an outside part (footstep riser part forming body 30) arranged outside a tank heat insulation material so as to cover a part of an opening 20a of the tank heat insulation material (front face trunk heat insulation material 20) covering a hot water storage tank 10; an accessory part (temperature sensor 11) attached to the hot water storage tank 10 in a position covered with the outside part, and positioned inside the opening 20a; and a lid member 21 slidable between a closing position of closing the opening 20a and an open position. The lid member 21 is slidable from the closing position to the open position without removing the outside part. In the open position, the lid member 21 can be removed from the tank heat insulation material without removing the outside part, or the accessory part can be visually observed from the opening 20a without removing the outside part.SELECTED DRAWING: Figure 4 【課題】貯湯タンクに取り付けられた付属部品のメンテナンスを行うときの作業性を改善する上で有利になる貯湯式給湯機を提供する。【解決手段】貯湯タンク１０を覆うタンク断熱材（前面胴部断熱材２０）の開口部２０ａの一部を覆うようにタンク断熱材の外側に配置された外側部品（蹴込部形成体３０）と、外側部品に覆われる位置の貯湯タンク１０に取り付けられ、開口部２０ａの内側に位置する付属部品（温度センサ１１）と、開口部２０ａを塞ぐ閉位置と、開位置との間でスライド可能な蓋部材２１とを備える。外側部品を取り外すことなく、蓋部材２１を閉位置から開位置へスライド可能である。開位置においては、外側部品を取り外すことなく蓋部材２１をタンク断熱材から取り外し可能となるか、外側部品を取り外すことなく付属部品を開口部２０ａから目視可能となる。【選択図】図４