Economizer Function in Boilers [caption id="attachment_2599" align="alignleft" width="386"] Economizer Function in Boilers[/caption] Winsketel The function of the Economizer in the Boiler is to heat the Boiler fill water by utilizing heat from the combustion gases inside the Boiler. As the temperature of Boiler filler water rises, Boiler Efficiency will also increase. The rem...