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2. Ceramic heater - Wikipedia

   en.wikipedia.org/wiki/Ceramic_heater

   A ceramic heater as a consumer product is a space heater that generates heat using a heating element of ceramic with a positive temperature coefficient (PTC). [1] [2] [failed verification] Ceramic heaters are usually portable and typically used for heating a room or small office, and are of similar utility to metal-element fan heaters.

3. Infrared heater - Wikipedia

   en.wikipedia.org/wiki/Infrared_heater

   This makes a careful selection of the right infrared heater type important for energy efficiency in the heating process. [21] Ceramic elements operate in the temperature of 300 to 700 °C (570 to 1,290 °F) producing infrared wavelengths in the 2 to 10 μm range. Most plastics and many other materials absorb infrared best in this range, which ...

4. Space heater - Wikipedia

   en.wikipedia.org/wiki/Space_heater

   Radiant space heaters transfer heat to directly to bodies in front of them using thermal radiation. Thermal radiation is a process by which objects at a high temperature emit heat in the form of electromagnetic waves. These heaters are often designed such that the frequency of the emitted waves are in the infrared part of the electromagnetic ...

5. Self-regulating heater - Wikipedia

   en.wikipedia.org/wiki/Self-regulating_heater

   A positive-temperature-coefficient heating element (PTC heating element), or self-regulating heater, is an electrical resistance heater whose resistance increases significantly with temperature. The name self-regulating heater comes from the tendency of such heating elements to maintain a constant temperature when supplied by a given voltage.

6. Masonry heater - Wikipedia

   en.wikipedia.org/wiki/Masonry_heater

   A classic Scandinavian style round ceramic stove, which fits in the corner of a room, from the porcelaine manufacturer Rörstrand in Stockholm, c. 1900. A masonry heater (also called a masonry stove) is a device for warming an interior space through radiant heating, by capturing the heat from periodic burning of fuel (usually wood), and then radiating the heat at a fairly constant temperature ...

7. The 10 Best Hot Tubs You Can Invest in for a Long, Cold ...

   www.aol.com/10-best-hot-tubs-invest-000000672.html

   A 240V hot tub will heat up faster than a 120V hot tub and will have power to support more jets. You can expect monthly energy costs to be around $20 to $30,” she says, noting that a local ...