Why no heatpump refrigerator combos?

[oz93666]

A big push for (air) heat pumps in the UK ... The outdoors unit has refigerant exiting the expansion valve at around -20C , it would be an easy afair to wrap a copper tube around this larger outlet copper tube from the expansion valve before it reaches the radiator , in effect creating a secondary heat exchanger with salt water pumped through it , this could enter the kitchen and enter the fridge freezer and another heat exchanger ... This may only be feasable where the outside HP is in close vecinity to the kitchen , but the saveings would be around 400KWHrs/year , and it would increase slightly the overall efficiency of the HP.

 

[OmCheeto]

Thank you for the for me a delightful Sunday morning maths quiz.
Your 400 kwhs/year yields me a per day savings of ≈0.2 euro.
As an old yank, I'd bend over to pick up two dimes.
But....... I spend more on a single sushi order than what your system would save me a year($80).

Quite the planetary quandary/conundrum/dilemma/problem, I must say.