The pumps yes. I don't think we are good candidates for a boiler, as we have relatively cheap electricity here and I would be doing:
1) solar panels
2)passive air heat
3) passive heat and cooling design
4) split mini heat pumps
5) solar drainback for the hot water
6) Heat mass storage in that unfinished basement
I'd use those new pumps for recirc on the hot water, for the solar collection.
In the heating season I would heat mass store from the air panels in the basement.
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