Looking at a 3500 SQ ft house.
It has old radiator baseboard heat. Built in 1962.
They recently replaced the boiler with a natural gas on demand heater. Brand is Rinnai.
Will this heat the house adequately? Can they run 24-7 nonstop ?
From what I googled it seems they are ok for radiant heat in floor, but not so much for whole house baseboard radiators.
Opinions, experiences, etc?
Thanks