HEATING SYSTEM

A heating system includes a heating terminal, a circulation pump, and a heating device that are connected by pipes to configure a heat medium flow path through which heat medium circulates. The heating terminal is configured to cause heat exchange to be performed between air in an air-conditioned space and the heat medium. The circulation pump is configured to apply pressure to the heat medium. The heating device is configured to heat the heat medium. The heating system includes a supply temperature sensor configured to detect a supply heat medium temperature that is a temperature of the heat medium flowing from the heating device to the heating terminal, a return temperature sensor configured to detect a return heat medium temperature that is a temperature of the heat medium flowing from the heating terminal to the heating device, a room temperature sensor configured to detect a room temperature that is a temperature of the air-conditioned space, and a controller configured to control the heating device and the circulation pump. The controller controls a rotation speed of the circulation pump based on a temperature difference between the return heat medium temperature and the room temperature, and deviation between the supply heat medium temperature and a set target supply heat medium temperature.