They Sound Alike But Are Way Different | Hot Gas Bypass vs. Hot Gas Reheat
HVAC TV10 Juni 2021

They Sound Alike But Are Way Different | Hot Gas Bypass vs. Hot Gas Reheat

In this episode, I discuss the importance of knowing the difference between Hot Gas Bypass and Hot Gas Reheat.

Check out our YouTube Channel for a video version of this discussion: https://www.youtube.com/InsightPartnersHVACTV

HOT GAS REHEAT uses the high pressure, high temperature, compressor discharge gas to reheat the air leaving the evaporator coil. This is achieved by running the gas through a hot gas reheat coil using hot gas reheat valves. Hot gas reheat is typically used in dehumidification modes to meet the desired space sensible temperature set point. Modulating hot gas reheat, the more advanced form of reheat, allows us to precisely control the HVAC system leaving air temperature. As opposed to the older style electric reheat, which works well but wastes a lot of energy. Advances in HVAC controls and technology in HVAC systems over the years have made hot gas reheat very popular.

HOT GAS BYPASS provides an artificial load on the evaporator by introducing a portion of high pressure, high-temperature gas to the evaporator/suction side of the system. An inexpensive and simple way to keep the HVAC system running without freezing the coil but a huge energy waster. The hot gas bypass valve is old technology used on a limited basis today quickly being replaces by modulating compressors or variable capacity compressors. Get in touch with me: Email: tmormino@insightusa.com Visit our website: https://www.insightusa.com/ Connect with me on LinkedIn: https://www.linkedin.com/in/tony-mormino Visit our YouTube channel: https://www.youtube.com/InsightPartnersHVACTV

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