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  2. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    A heating coil is the part of the system that conducts heat. It allows electricity to act as fire. heat exchanger A heat exchanger is the part of the system that transfers heat from the hot parts of the machine or a system to the cold parts of the machine or system. heat gain heat load heat loss

  3. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    Air convection heating systems have been in use for over a century. Older systems rely on a passive air circulation system where the greater density of cooler air causes it to sink into the furnace area below, through air return registers in the floor, and the lesser density of warmed air causes it to rise in the ductwork; the two forces acting ...

  4. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    A steam heating system takes advantage of the high latent heat which is given off when steam condenses to liquid water. In a steam heating system, each room is equipped with a radiator which is connected to a source of low-pressure steam (a boiler). Steam entering the radiator condenses and gives up its latent heat, returning to liquid water.

  5. Is your heater making you sick? How to avoid cold-like ...

    www.aol.com/lifestyle/heater-making-sick-avoid...

    The dry air produced by heating systems can irritate your nasal passages and throat, which can in turn cause discomfort, Lizarzaburu adds. Dry air can also make it harder to fight off colds.

  6. Heating system - Wikipedia

    en.wikipedia.org/wiki/Heating_system

    A heating system is a mechanism for maintaining temperatures at an acceptable level; by using thermal energy within a home, office, or other dwelling. Typically, these systems are a crucial part of an HVAC (Heating, Ventilation, and Air Conditioning) system.

  7. Heating, ventilation, and air conditioning - Wikipedia

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

    Most modern hot water boiler heating systems have a circulator, which is a pump, to move hot water through the distribution system (as opposed to older gravity-fed systems). The heat can be transferred to the surrounding air using radiators, hot water coils (hydro-air), or other heat exchangers. The radiators may be mounted on walls or ...

  8. Forced-air - Wikipedia

    en.wikipedia.org/wiki/Forced-air

    The supply plenum directs air from the central unit to the rooms which the system is designed to heat. Regardless of type, all air handlers consist of an air filter, blower, heat exchanger/element/coil, and various controls. Like any other kind of central heating system, thermostats are used to control forced air heating systems. Forced air ...

  9. What does the slang word 'mid' really mean? - AOL

    www.aol.com/news/does-slang-word-mid-really...

    What does 'mid' mean? Think: a lukewarm bowl of mac-and-cheese or a three-star hotel, says Kelly Elizabeth Wright, a postdoctoral research fellow in language sciences at Virginia Tech. For example: