pistolbristol

pistolbristol t1_j7hahs0 wrote

The numbers quoted "feel" right for capacity. I'd say below 17F is where I start to see a noticeable drop in capacity. Anything above that and it has no issues covering the load. Fortunately, the heat pump is the upstairs zone and the downstairs is still forced hot water (oil) and a pellet stove so the coldest days I overheat the downstairs zone to makeup for the dip in capacity.

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pistolbristol t1_ivp1txk wrote

By usage I have: Pellet stove (~65%), Heat pump (~30%), Oil Boiler (~5%). Boiler is just freeze protection when I'm gone for an extended period. Hoping to get another heat pump in a year or two or even just a standalone propane heater and eliminate the boiler entirely.

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