You saw a savings because of a better burner and possibly set-up. But take all those systems now and bring them up to their mechanical ability(not just the rating plate numbers)and additional savings would be attained each and every time if the O2 or CO2, smoke and CO were the same. Flue temperature will be slightly higher when greater inputs are used but then it should be known that the greater the temperature difference the greater the rate of transfer.
Originally posted by beenthere
I've done what you said you've never seen.
With becketts, and carlins.
Not just take out an old burner and put in the carlin, or beckett, but on units that came with those burners.
But, you can't go over board and do 35% down fires or you will use more fuel.
When i worked for oil companies we tracked the results for 3 years, and it should that those customers were indeed saving on fuel.