Abstract: A boiler blowdown heat recovery system is described herein which includes conduit means for directing the blowdown water and fresh water through a heat exchanger, and metering and display means are included for showing the volumetric flow of the blowdown water and the fresh water and also the energy in BTU's transferred to the fresh water. The present invention provides a distinct, packaged system which is readily mounted to a steam boiler or the like, and in a particular embodiment also includes a flash tank to provide for the recovery of additional steam from the blowdown water prior to passing the water through the heat exchanger.