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There are many things to consider in ROI. With respect to energy
cost, approximately speaking the annual fuel utilization of your
existing and new device would determine the change in energy
consumption, all else remaining the same. AFUE includes flue loss,
on and off cycle, Your existing system is probably around about 60%,
and a new one might be around 90%. The fuel saving would be about a
third of current consumption (1 - existing efficiency/new
efficiency). <br>
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<div class="moz-cite-prefix">On 2015-01-15 08:41 AM, Benjamin Pratt
wrote:<br>
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<div dir="ltr">Norbert.
<div>There is no damper of any kind. I could add one, but there
isn't much room beofre the brick chimney. Perhaps on the
horizontal portion, if that is acceptable.</div>
<div>However, I am still considering a new boiler. Does anyone
have any input as to my original question--what would be the
ROI on a newer more efficient direct vent boiler? I just found
this link, but have no way to determine if it is accurate. </div>
<div><a moz-do-not-send="true"
href="http://www.houseneeds.com/learning-center/hydronic-boilers-learning/boilers-heat-source-costs-example">http://www.houseneeds.com/learning-center/hydronic-boilers-learning/boilers-heat-source-costs-example</a><br>
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<div>Thanks!</div>
<div>Ben</div>
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b e n j a m i n p r a t t
<div><br>
professor art+design</div>
<div>the university of wisconsin stout</div>
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