The indoor temperature with a heat pump can vary and depends on various factors, including the settings of the heat pump, the outdoor temperature, the insulation of the house, and personal preferences. In general, a heat pump can be configured to maintain a comfortable indoor temperature, comparable to what you would expect with traditional heating systems. Here are some considerations:

1. Comfort Level:

   • Most people aim for a comfortable indoor temperature, usually somewhere between 18 and 22 degrees Celsius. Heat pumps can be set to maintain this comfort level.

2. Efficiency of the Heat Pump:

   • Heat pumps operate most efficiently at moderate outdoor temperatures. At very low outdoor temperatures, it may be necessary to adjust the settings or use additional heating sources.

3. Insulation of the House:

   • A well-insulated house retains heat better, reducing the effort required by the heat pump to maintain the desired temperature.

4. Solar Gain:

   • The amount of sunlight entering the home can also affect the indoor temperature. Sunlight can reduce the need for heating.

5. Programmable Thermostat:

   • Using a programmable thermostat can help regulate the indoor temperature based on daily schedules and personal preferences.