Heating apparatus of vehicle

A vehicle heating apparatus for heating an interior space of a vehicle, comprising:

• a heater core for heating an air to be supplied to the interior space;
• a heat generation device for generating heat by using electric power;
• at least one pump for flowing cooling water;
• and
• an electronic control unit for controlling an activation of the heat generation device, an operation of an internal combustion engine of the vehicle, and an activation of the at least one pump,
• wherein the electronic control unit is configured to:
• execute a first heating control for activating the heat generation device to heat the heater core by the heat generated by the heat generation device when a process of heating the heater core is requested while the operation of the internal combustion engine is stopped;
• execute a second heating control for activating the heat generation device, operating the internal combustion engine, and activating the at least one pump to heat the cooling water which cooled the internal combustion engine, by the heat generated by the heat generation device, supply the heated cooling water to the heater core, and heat the heater core by the supplied cooling water when a temperature of the heater core is not increased to a requested temperature only by the heat generated by the heat generation device;
• execute a third heating control for continuing the activation of the heat generation device, stopping the operation of the internal combustion engine, and continuing the activation of the at least one pump to heat the cooling water which cooled the internal combustion engine, by the heat generated by the heat generation device, supply the heated cooling water to the heater core, and heat the heater core by the supplied cooling water when a temperature of the internal combustion engine becomes equal to or higher than a predetermined temperature while the electronic control unit executes the second heating control.