Forced air heater tube : Honeywell quartz heater : Water heater thermostat wiring.

Forced Air Heater Tube

forced air
A forced-air system is one which uses air as its heat transfer medium. These systems rely on ductwork, vents, and plenums as means of air distribution, separate from the actual heating and air conditioning systems.
A method of temperature regulation that involves air from an external environment being forcibly exchanged with a transformer's enclosed environment.
Firing system in a fuel-burning kiln which uses power-driven blowers or other pressurized air-source to entrain primary air.

heater
A conductor used for indirect heating of the cathode of a thermionic tube
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 person or thing that heats, in particular a device for warming the air or water
fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"
device that heats water or supplies warmth to a room
A fastball

tube
The inner tube of a bicycle tire
Material in such a cylindrical form; tubing
conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
provide with a tube or insert a tube into
convey in a tube; "inside Paris, they used to tube mail"
A long, hollow cylinder of metal, plastic, glass, etc., for holding or transporting something, chiefly liquids or gases

Air Force One Taxiing After Landing At PDX On Runway 10R Air Force One Takes Off From PDX On Runway 28L
See also:
electric in wall heater
small convector heater
perfection oil heater
air heater
direct vent oil heaters
hot water heater flue
geospring hybrid electric heat pump water heater
cost to run a space heater
electric tankless water heaters