Understanding Your HVAC/R System | Refrigeration School, Inc (RSI)
https://www.rsi.edu/blog/hvacr/understanding-your-hvacr-system/
WebMar 12, 2015 · Heating, Ventilating, and Air Conditioning (and Refrigeration), or HVAC/R, units are critical for maintaining an optimal climate and clean, odor-free air inside buildings of all sizes. HVAC/R systems control the temperature of the air, the humidity, and even the movement of the air to help keep the people who are inside the building comfortable.
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