1. Manufacturer and model
2. Space heating function
3. Water heating function
4. Energy efficiency class for the space heating
5. Indication of whether a solar collector is included in the set
6. Indication of whether a hot water tank is included in the set
7. Indication of whether a temperature controller is included
8. Indication of whether an additional heater is included
9. Water heating function that includes the declared load profile of the hot water boiler
10. Energy efficiency class for the water heating

The energy label applies to the sets, such as a heat pump system that includes a temperature controller.