Chlorofluorocarbons (CFCs) are man-made chemicals once used as refrigerants, aerosol propellants, and cleaning solvents. Scientists discovered that CFCs deplete the ozone layer, which protects Earth from harmful UV radiation. Global regulations under the Montreal Protocol phased out CFCs and spurred the transition to newer, ozone-friendly refrigerants.
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Chlorofluorocarbons (CFCs) are man-made chemicals once used as refrigerants, aerosol propellants, and cleaning solvents. Scientists discovered that CFCs deplete the ozone layer, which protects Earth from harmful UV radiation. Global regulations under the Montreal Protocol phased out CFCs and spurred the transition to newer, ozone-friendly refrigerants.
Why were CFCs banned in HVAC systems?
CFCs damage the ozone layer, so global regulations phased them out in favor of safer refrigerants.
Source: The Cooling Company
CFC phaseout protects the ozone layer and public health.
Modern HVAC systems use alternative refrigerants that avoid ozone depletion and improve efficiency compared to older CFC-based equipment.
When servicing or retiring older systems, ensure any CFCs are properly recovered and disposed of by certified professionals.
“When servicing or retiring older systems, ensure any CFCs are properly recovered and disposed of by certified professionals.”
Research linking CFCs to ozone depletion earned the 1995 Nobel Prize in Chemistry.
Do older HVAC systems still use CFCs?
Some older systems may still contain CFCs, which require certified handling during service or disposal.
Are CFC replacements environmentally safe?
They are safer for the ozone layer, but some have global warming impacts, so newer low‑GWP options are preferred.
What is the Montreal Protocol?
A global treaty that phased out CFCs and other ozone‑depleting substances.
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