Probably not the best you could.
In the winter time, our boilers need to kick on for standby... even when no heat or hot water is being called for... but the excess heat is usually lost at least partially to the house.
The same thing happens in the summer time, but that excess heat lost to the house then needs to be pumped out by the mini-split.
A hybrid water heater solves the problem in the summer; but then could be working against the mini-split in the winter as it pulls the warms out of the ambient air that the mini just pumped into the house.
There are some engineers looking to other items, like retaining warm water from the shower and letting it release heat into internal ambient air. But everything I have seen on this so far looks quirky from a cost/benefit standpoint.
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