Flat plate heat exchangers for hydronics

This is a spin-off of a recent question about air-to-water heat pumps and whether glycol is necessary. It would seem one way to reduce the amount of glycol needed would… This is a spin-off of a recent question about air-to-water heat pumps and whether glycol is necessary. It would seem one way to reduce the amount of glycol needed would…Read MoreGreenBuildingAdvisor