SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/epa-gwp-meaning

A refrigerant has a GWP of 700. What does that mean?

700 times the climate impact of CO2, kilogram for kilogram.

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  1. It destroys 700 times more ozone than CFC-11
  2. It stays in the air for exactly 700 days
  3. Climate effect 700 times that of CO2 ✔

Why: Global warming potential (GWP) compares a gas to carbon dioxide, which has a GWP of 1. A GWP of 700 means the gas traps heat 700 times as strongly per kilogram.

Huh, didn't know that: EPA says HFC global warming potentials can be hundreds to thousands of times more potent than CO2.

The dad joke
How do you scare a snowman? Two words: Global Warming.
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References

Answer: Climate effect 700 times that of CO2. Global warming potential (GWP) compares a gas to carbon dioxide, which has a GWP of 1. A GWP of 700 means the gas traps heat 700 times as strongly per kilogram.

  1. Frequent Questions on the Phasedown of Hydrofluorocarbons, US EPA www.epa.gov/hfcs/frequent-questions-phasedown-hydrofluorocarbons
    a GWP of 700 has an impact on the climate that is 700 times stronger than one kilogram of CO 2
    Checked 2026-10-11.
  2. Background on HFCs and the AIM Act, US EPA www.epa.gov/climate-hfcs-reduction/background-hfcs-and-aim-act
    global warming potentials (GWPs) that can be hundreds to thousands of times more potent than carbon dioxide
    Checked 2026-10-11.

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