Assertion: heat | /r/HasProperty | needed
Facets:
Source sentences:
text: A steam boiler will usually keep the heat at 180°F (82°C), then when the thermostat indicates that heat is needed, it will increase the temperature to above the boiling point, 212°F (100°C).
text: Have your HVAC professional conduct a heating load calculation on your home to determine how much heating is needed.