central heating
compound.a system that warms a whole building by sending hot water or air through pipes to radiators.
compound.a system for warming a building by heating water or air in one central place and circulating it through pipes and radiators. Uncountable noun.
“We turned on the central heating because it was freezing outside.”
“The old cottage was charming, but it was very cold in the winter because it lacked central heating.”
“Modern central heating systems often utilize smart thermostats to optimize energy consumption and maintain a consistent ambient temperature throughout the residence.”
usually used with the verbs 'turn on', 'turn off', or 'have'.
contrast with 'space heater' or 'fireplace'; explain that in many English-speaking countries, this is the standard way homes are kept warm.