Source: Good Housekeeping / Zee Krstic / June 8,2023
It's true that almost all mechanical air conditioning units are made with filtration systems, but some are inherently much more effective than others, explains Dan DiClerico, the director of the Home Improvement and Outdoor Lab at the Good Housekeeping Institute.Ensuring your air conditioner's filter is up to date is crucial when you use AC during any poor air quality events in your area. If you have central air conditioning units, running your AC system when there's wildfire smoke or other widespread air pollution outside won't put you at greater risk for breathing issues
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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).