Hot Gas Reheat vs. Hot Gas Bypass

Taken from my presentation called Why DX Systems Fail. Schedule your online presentation here:
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In this video, we discuss the difference between Hot Gas Bypass and Hot Gas Reheat. Two HVAC industry terms that are commonly misunderstood.
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Video Description:
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 the 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 has 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. Inexpensive and simply way to keep the HVAC system running without freezing the coil but a huge energy waster. This old technology is used on limited basis today quickly being replaces by modulating compressors or variable capacity compressors.
Thank you for watching and please let me know if you have any questions!

[@jasonjohnsonHVAC]

I have a AAON with reheat and hot gas bypass. It also has digital compressors. Why do you think they did that

[@HVAC-TV]

Hi Jason. Many reasons but not familiar with your application or location. Typically, on some of my applications, I would include HGPB for extreme freeze protection. Even when I have a digital scroll. Thank you for watching!

[@mr.spliffaddikts9548]

How can I get into just working with growing facilities