Source: Modernize / Rob Sabo / Feb 16, 2023
HVAC stands for Heating, Ventilation, and Air Conditioning. HVAC systems are meant to give you control over your home’s heating and cooling temperatures. Most people refer to HVAC systems by their more common names, such as central air conditioners, ductless AC units, furnaces, heat pumps, or boilers. They sometimes come in combined packages that offer heating and cooling in one unit or in areas with more predictable climates you may only need one or the other.
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Balance Point HVAC Blog

The energy intensity for cooling commercial buildings in the United States depends on the climate the building is located in. Energy intensity in buildings is the energy consumed per square foot of floorspace. U.S. commercial buildings in hot or very hot climates, which are primarily in the southernmost parts of the country, were more than six times more energy-intensive for cooling (14.2 thousand British thermal units per square foot [MBtu/sf]) than buildings in cold or very cold climates (2.3 MBtu/sf).