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A comment on An open source initiative to share and compare heat pump performance data. Parent comment

Re:An open source initiative to share and compare heat pump ... by ip26 on Friday April 12, 2024 @10:49AM (#40013561)
Drain water heat recovery seems like the best efficiency boost for water heating. Completely passive, 60% extra heat energy. At least for cold climates. Heat pump water heater might be phenomenal in a Phoenix garage.
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Re:An open source initiative to share and compare heat pump ... by _JamesA_ on Friday April 12, 2024 @10:55AM (#40013646)
A heat pump water heater seems phenomenal to me in an Austin attic. And I use the cold air generated to cool a wiring/server closet. Win/win.
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