Transitioning Away From Hydronic Heat
Decision time. Zone 5 Eastern MA.
Project is a two story gambrel w/ finished attic. Prior to rehab, all three floors were heated with hydronic cast baseboards or radiators. Zero insulation. Various issues lead to a near complete interior and exterior gut. All that remained was the field stone foundation, structure, and the board sheathing.
Rebuild. Much improved exterior water and air barrier using adhered WRB. R40 gambrel attic/roof insulation with the remaining first and second exterior 2×4 and 2×6 walls dense packed cellulose.
Ducted AC was a requirement, after rebates this resulted in ducted Mistsubishi Hyper Heat systems for all three floors.
Finished attic will use the heat pump for all heating and cooling. The question is floors 1 and 2. I’m tempted to forgo a restoration of the first and second floor hydronics. The boiler, indirect HW tank, and all emitter plumbing is end of life. Substantial cost to replace. But the emitters just need a refinishing.
I am told we will really miss the hydronic radiant heat November-February (versus blown hot air). And it is unclear to me where the OPEX cross over is heat pump versus the gas fired hydronics.
How would you approach these choices?
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