So i've asked a couple times in other threads, trying to find the
rated efficiency of my furnace.
It claims to be rated for 130K BTU output for water.
but then has "AGA" rating of
input =218,000 BTU
output = 172,800 BTU

Does that mean efficiency is:
172800 / 218000 = 79% or
130000/218000 = 59%

Considering the boiler was installed 50 years ago (estimated) I'm
guessing 59%, but I could be wrong.

Please don't make me post to the HVAC group... I hear they're mean.

--
be safe.
flip
Ich habe keine Ahnung was das bedeutet, oder vielleicht doch?
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