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2. Grate heater - Wikipedia

   en.wikipedia.org/wiki/Grate_heater

   This tubular fireplace grate heater has a large surface area heat exchanger in a compact design, with a fan or blower (fans and blowers are not the same) to multiply the effect of natural convection. This is a very basic tubular blower that sits under a grate and heats the air being pumped through it from the heat of the coals.

3. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   HVAC stands for heating, ventilation, and air conditioning, which is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Learn about the history, functions, and types of HVAC systems, as well as their applications and benefits.

4. Radiator (engine cooling) - Wikipedia

   en.wikipedia.org/wiki/Radiator_(engine_cooling)

   A radiator is a heat exchanger used to cool internal combustion engines, mainly in automobiles. It is part of the engine cooling system, which also includes the engine block, cylinder head, water pump, thermostat, fan and coolant.

5. Wood-burning stove - Wikipedia

   en.wikipedia.org/wiki/Wood-burning_stove

   Learn about the history, operation, and types of wood-burning stoves, a heating or cooking appliance that burns wood fuel. Find out how to choose the right fuel, control the air supply, and avoid harmful emissions.

6. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   A fan coil unit (FCU) is a device that combines a heat exchanger and a fan to condition air in HVAC systems. Learn about the different configurations, applications, and control methods of FCUs, as well as their advantages and disadvantages.

7. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   A centrifugal fan is a device that moves air or gases in a direction at an angle to the incoming fluid. It is also called a blower, squirrel-cage fan, or biscuit blower. Learn about its history, construction, drive mechanisms, and variations.