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Old 09-09-2018, 05:20 PM   #33
swnoel
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Quote:
Originally Posted by Rusty View Post
It could be the annual fuel utilization efficiency (AFUE) that he is talking about.
No it can't... only the manufacturer can manipulate that! He's talking about the efficiency the tech told him his boiler was after they did the combustion test. I've done thousands of them.
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