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Yea, let me clarify my payback remark;
The hybrids are pretty expensive, and require 240V.
The straight heat pumps are also 240V but we are currently testing 120V units that will plug into any dedicated 20A circuit.
So the quick payback was for a large family, and for an electric WH replaced with a non-hybrid HPWH.
Downsides are first cost, slower recovery rate, and potentially an electrical upgrade.
They also put cooling out into the space. Sometimes that is good, sometimes bad.
Warm garage in the summer? Yup!
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“The wave is not the water. The water merely told us about the wave moving by” – Buckminster Fuller
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