Temperature adjustment system

A temperature adjustment system that adjusts a temperature of water flowing through a water pipe, the temperature adjustment system comprising:

• a first unit;
• and
• a second unit,
• wherein
• the first unit includes:
• a refrigerant circuit through which a highly flammable refrigerant circulates,
• a first water pipe that is a part of the water pipe,
• a heat exchanger that exchanges heat between the refrigerant and the water flowing through the first water pipe, and
• a first deaerator that exhausts gas from the first water pipe,
• the second unit includes:
• a second water pipe that is a part of the water pipe, into which the water that flows out of the first water pipe flows, and into which the refrigerant that flows out of the second water pipe flows into a living space, and
• a second deaerator that exhausts the gas from the second water pipe, and
• a gas-liquid separation performance of the first deaerator in which the gas from the water that flows through the water pipe is separated is higher in performance than the gas-liquid separation performance of the second deaerator in which the gas from the water that flows through the water pipe is separated.