A heat pump could never bring water up to 120F.
Re:Scientists’ warning on affluence
by TheSpiceIsLife on Sunday June 21, 2020 @11:55AM
(#23592712)
Whenever you believe you are so certain of a thing that you’re prepared to say something like “x could never do y” you should search the internet for x doing y.
Heat pump water heaters for either space heating or hot water production are most certainly a product you can buy today.
Eg, Rheem sell these two models in Australia https://www.rheem.com.au/products/residential/heat-pumps
The COP for heat pumps range from 3.2 to 4.5 for air source heat pumps to 4.2 to 5.2 for ground source heat pumps.
https://en.wikipedia.org/wiki/Heat_pump
Whereas a resistive heat coil has a COP 1.