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  2. Crankcase heater - Wikipedia

    en.wikipedia.org/wiki/Crankcase_heater

    A crankcase heater is an electrical component in a compressor in an air-conditioning system, heat pump system, or chiller system. The crankcase heater is normally on all the time, even when the unit is not running, though temperature sensors and set points may turn it off when not needed.

  3. 5 Signs That It's Time to Turn on the Heat for Winter ... - AOL

    www.aol.com/lifestyle/5-signs-time-turn-heat...

    "A trained HVAC or indoor air quality specialist can design a system tailored to your specific needs, ensuring optimal humidity levels." Related: The 3 Best Humidifiers, Tested by BHG Read the ...

  4. Variable-speed air compressor - Wikipedia

    en.wikipedia.org/wiki/Variable-speed_air_compressor

    If a variable speed drive compressor operates continuously at full speed, the switching losses of the frequency converter result in a lower energy efficiency than an otherwise identically sized fixed speed compressor. Where demand remains constant within 5–15% of the total free air delivery flow rate, dual-control compressors configured in a ...

  5. Heating, ventilation, and air conditioning - Wikipedia

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

    Basing HVAC on a larger network helps provide an economy of scale that is often not possible for individual buildings, for utilizing renewable energy sources such as solar heat, [6] [7] [8] winter's cold, [9] [10] the cooling potential in some places of lakes or seawater for free cooling, and the enabling function of seasonal thermal energy ...

  6. Compressor - Wikipedia

    en.wikipedia.org/wiki/Compressor

    A diaphragm compressor (also known as a membrane compressor) is a variant of the conventional reciprocating compressor. The compression of gas occurs by the movement of a flexible membrane, instead of an intake element.

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