PROBLEM TO BE SOLVED: To provide a bath device which can prevent low-temperature burn caused in taking a bath.SOLUTION: A bath device includes: a reheating circulation circuit connected to a bathtub; a pump, a heating part and a hot water temperature sensor provided in the reheating circulation circuit; a memory; and an arithmetic control part. The memory stores correlation data which shows a relation between bathtub hot water temperature and upper limit bathing time for preventing low-temperature burn. The arithmetic control part executes reheating by circulating the hot water in the bathtub via the reheating circulation circuit by driving the pump, and by supplying the heat from the heating part according to detection information of the bathtub hot water temperature from the hot water temperature sensor. It also determines presence/absence of bathing in the bathtub, calculates a risk level of the low-temperature burn during bathing based on the bathtub hot water temperature based on the detection information from the hot water temperature sensor, bathing time, and the correlation data stored in the memory, and executes an operation for low-temperature burn prevention such as pouring water, notification and the like, based on the calculated risk level.SELECTED DRAWING: Figure 4【課題】 入浴による低温やけどを防止できる風呂装置を提供する。【解決手段】 風呂装置は、浴槽に接続される追焚循環回路と、この追焚循環回路に設けられたポンプ、加熱部および湯温センサと、メモリと、演算制御部とを備えている。メモリは、浴槽湯温と上限入浴時間との関係を表す低温やけど防止のための相関データを記憶している。演算制御部は、上記ポンプを駆動させることにより浴槽の湯を追焚循環回路を介して循環させ、上記湯温センサからの浴槽湯温の検出情報に応じて上記加熱部からの熱を供給することにより、追焚を実行するとともに、浴槽への入浴の有無を判断し、入浴中の低温やけどのリスクレベルを、上記湯温センサからの検出情報に基づく浴槽湯温と、入浴時間と、上記メモリに記憶された上記相関データに基づき演算し、演算されたリスクレベルに基づき、注水や報知等、低温やけど防止のための動作を実行する。【選択図】 図4