Jadnashua
Retired Defense Industry Engineer xxx
I've asked this in a different manner before, but thought I'd see what ideas come out now that some time has passed.
Most boiler lines have at least a couple of "classes" of boilers. Tried and true, simple, fair effficiency and relatively new, super efficient units. The super efficent models get efficencies in the mid-90% range, the older stuff is usually in the low 80% range.
Is the more complex, electronically controlled high efficiency model "worth" it? With today's energy costs, the difference in initial cost may or may not pay over the life of the unit, but it probably won't if costs to maintain it end up being higher.
From a comfort viewpoint, the modulating version I'm thinking about, a Viessman unit, gets up to 97% in its most likely used mode, barely running.
Pros, cons?
Most boiler lines have at least a couple of "classes" of boilers. Tried and true, simple, fair effficiency and relatively new, super efficient units. The super efficent models get efficencies in the mid-90% range, the older stuff is usually in the low 80% range.
Is the more complex, electronically controlled high efficiency model "worth" it? With today's energy costs, the difference in initial cost may or may not pay over the life of the unit, but it probably won't if costs to maintain it end up being higher.
From a comfort viewpoint, the modulating version I'm thinking about, a Viessman unit, gets up to 97% in its most likely used mode, barely running.
Pros, cons?