@ifixcoinops what makes you think that connecting them would improve things? They're already connected indirectly anyway, if you have a cool room your fridge will leak less cold, and thus, run at a lower duty cycle. I think the only really impactful thing is perhaps capturing the waste heat from the AC and using it to heat water. But the climates where you're likely to have an AC running and high demand for hot water concurrently are not so many. (Plus, solar hot water is a thing then)