*Most heat pumps in the United States have 100% efficiency down to about 20 degr... | Hacker News

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snozolli on Feb 10, 2023 | parent | context | favorite | on: How a heat pump works

Most heat pumps in the United States have 100% efficiency down to about 20 degrees F. Below that they "lose efficiency."

Most things that are already installed are worse than the latest technology that's available.

That's not an argument against the latest technology.

peterhunt on Feb 10, 2023 [–]

I’m talking about the ones sold in the United States in the last few years. Mine is a Carrier manufactured in 2022

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