Greenmountain
Member
for the context of this question, I'm referring to mod-con boilers only.
I've read conflicting info here as to efficiency vs firing rate; that boilers are more efficient at high fire rate, more efficient at low fire, and also that fire rate does not matter so long as return temps are under 130F.
All other conditions being equal, which is it?
I've read conflicting info here as to efficiency vs firing rate; that boilers are more efficient at high fire rate, more efficient at low fire, and also that fire rate does not matter so long as return temps are under 130F.
All other conditions being equal, which is it?