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Most boilers consist of a rotating drum called a tumbler through which heated air is circulated to evaporate the moisture from the load. The tumbler is rotated relatively fast in order to maintain space between the articles in the load.

Clothes Boiler

Most boilers consist of a rotating drum called a tumbler through which heated air is circulated to evaporate…

A slow cooker consists of a lidded round or oval cooking pot made of glazed ceramic or porcelain, surrounded by a housing, usually metal, containing a thermostatically controlled electric heating element. The lid is often transparent glass and is seated in a groove in the pot edge; condensed vapor collects in that groove and provides a low-pressure seal to the atmosphere.

Steam Cooking Vessel

A slow cooker consists of a lidded round or oval cooking pot made of glazed ceramic or porcelain, surrounded…

The fireplace and fender is used to heat a room.

Fireplace and Fender

The fireplace and fender is used to heat a room.

This fireplace is decorated with foliage and fruit. It is used to heat a room and for decorative purposes.

Fireplace

This fireplace is decorated with foliage and fruit. It is used to heat a room and for decorative purposes.

This fireplace is made out of marble. It is used to heat a room, and for decorative purposes.

Fireplace

This fireplace is made out of marble. It is used to heat a room, and for decorative purposes.

"Any arrangement in which heat is produced by burning fuel. It usually is a structure of iron or brick, lined with fire-brick to withstand intense heat." — Beach, 1909

Furnace

"Any arrangement in which heat is produced by burning fuel. It usually is a structure of iron or brick,…

A base-burner heater with the water pipes connected at the left-hand side.

Base-Burner Heater

A base-burner heater with the water pipes connected at the left-hand side.

Electric heating is any process in which electrical energy is converted to heat. Common applications include heating of buildings, cooking, and industrial processes. An electric heater is an electrical appliance that converts electrical energy into heat. The heating element inside every electric heater is simply an electrical resistor, and works on the principle of Joule heating: an electric current through a resistor converts electrical energy into heat energy.

Electric Heater Case

Electric heating is any process in which electrical energy is converted to heat. Common applications…

Device which radiates heat, ideally used to raise temperature by means of electrical power.

Electric Heater

Device which radiates heat, ideally used to raise temperature by means of electrical power.

Device that heats water or supplies warmth to a room

Radiator Combined Heater

Device that heats water or supplies warmth to a room

A section of the base-burner heater.

Section of Base-Burner Heater

A section of the base-burner heater.

Device used to heat the water in an aquarium. Heaters vary in size and style including drop-in types and submersible sump types. They feature an adjustable thermostat to maintain the water at a constant temperature.

Tank Heater

Device used to heat the water in an aquarium. Heaters vary in size and style including drop-in types…

An appliance for heating water above its ambient temperature, generally for domestic use

Water Heater

An appliance for heating water above its ambient temperature, generally for domestic use

A heater and storage tank to supply heated water

Water Heater

A heater and storage tank to supply heated water

A heating system spread throughout a two story home.

Heating System

A heating system spread throughout a two story home.

"After thorough drying, the air to be liquefied enters through the pipe a, and in the compresor C is compressed to about 200 atmospheres. R is a water cooler, to remove the heat of compression. The air thus cooled and strongly compressed passes down through the inner tube of the helical coil H to a valve below." —Derr, 1911

Air Liquefaction Machine

"After thorough drying, the air to be liquefied enters through the pipe a, and in the compresor C is…

An absorption machine with ammonia and water mixing. The generator B heats the ammonia and water mixture with a furnace into the condenser. The mixture, traveling in coils, is cooled with running water into the refrigerator I. The cooled vapor is absorbed into cold water in absorber tank A.

Ammonia and Water Cycle Absorption Machine with Condenser and Tank

An absorption machine with ammonia and water mixing. The generator B heats the ammonia and water mixture…

An illustration of a compression machine. As piston A is pushes ammonia gas through the condenser B and vaporizer C. The condenser cools the ammonia to liquid in the coil with running water. The cooled ammonia travels through the valve D to be heated in vaporizer C.

Ammonia Cycle Compression Machine with Vaporizer and Condenser

An illustration of a compression machine. As piston A is pushes ammonia gas through the condenser B…

A heating apparatus in houses. Heats by convection.

Radiator

A heating apparatus in houses. Heats by convection.

A heating apparatus in houses. Heats by convection.

Radiator

A heating apparatus in houses. Heats by convection.

"The best known heraldic shield is that called the heater-shaped, a type common during the thirteenth and fourteenth centuries."—Finley, 1917

Heater shield

"The best known heraldic shield is that called the heater-shaped, a type common during the thirteenth…

A still is a permanent apparatus used to distill miscible liquid mixtures by heating to selectively boil and then cooling to condense the vapor.

Rounded Handle Design Still

A still is a permanent apparatus used to distill miscible liquid mixtures by heating to selectively…

The hall stove is used to heat an area such as the hall.

Hall Stove

The hall stove is used to heat an area such as the hall.

The hall stove was used to warm up the hall area of the house.

Hall Stove

The hall stove was used to warm up the hall area of the house.

The hall stove heats a room or an area.

Hall Stove

The hall stove heats a room or an area.

This hall or office stove is used to heat a room or area.

Hall or Office Stove

This hall or office stove is used to heat a room or area.

This hot air stove was used for heating a room. The basin with the vase at the top holds water.

Hot Air Stove

This hot air stove was used for heating a room. The basin with the vase at the top holds water.

A stove is an enclosed heated space. The term is commonly taken to mean an enclosed space in which fuel is burned to provide heating, either to heat the space in which the stove is situated or to heat the stove itself, and items placed on it. This article is principally concerned with enclosed stoves burning solid fuels for room heating.

18th Century Stovetop

A stove is an enclosed heated space. The term is commonly taken to mean an enclosed space in which fuel…

An illustration of a coal fueled water heater and stove.

Coal Fueled Water Heater and Stove

An illustration of a coal fueled water heater and stove.