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.

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 https://www.rheem.com.au/products/residential/heat-pumps