heaters
n. countablen. machines or devices that make a room or a building warm. You use them when the weather is cold to stay comfortable indoors.
n. devices or systems designed to increase the temperature of an enclosed space or a specific substance. Often refers to portable electric units or fixed components of a central heating system.
We turned on the heaters because the office was freezing.
During the winter months, many households rely on electric space heaters to supplement their central heating systems.
The facility manager installed energy-efficient heaters throughout the warehouse to ensure that the inventory remained at a stable temperature during the record-breaking cold snap.
Usually used in the plural when referring to multiple units or the general concept of heating equipment.