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Posted by HeatPro on September 11, 2005 at 13:35:09:
In Reply to: Upgrading from 65% EFF to 85%+ is it worth it? posted by Greg on September 11, 2005 at 01:54:47:
Your numbers are not correct. With a new burner, there is no reason your burner can not achieve better than 80% combustion efficiency. The low efficiency is probably due to too small a nozzle in the chamber. If your burner is tuned properly, most savings can be achieved by using the indirect water heater.