Whole Room Heaters

heaters
A conductor used for indirect heating of the cathode of a thermionic tube
(heater) fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.
A fastball
A person or thing that heats, in particular a device for warming the air or water
(heater) device that heats water or supplies warmth to a room

room
space for movement; "room to pass"; "make way for"; "hardly enough elbow room to turn around"
Opportunity or scope for something to happen or be done, esp. without causing trouble or damage
A part or division of a building enclosed by walls, floor, and ceiling
an area within a building enclosed by walls and floor and ceiling; "the rooms were very small but they had a nice view"
board: live and take one's meals at or in; "she rooms in an old boarding house"
Space that can be occupied or where something can be done, esp. viewed in terms of whether there is enough