what's the best way to design for lower temperatures in a boiler/radiator system, in your opinion?
three things I'm curious about:
1) what's the best way to increase radiator size? is it advisable to daisy-chain more than one hydronic panel in series, with one thermostatic valve? some other configuration?
2) what are your thoughts on fan-assisted radiators to increase output at a given temperature?
3) recommendations on a condensing boiler with a wide water temperature output range, to make the best use of low-temp operation while maintaining capability for very cold nights?
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