Wisdom of venting hybrid heat pump to interior space?

Looking at replacing a two decade old gas water heater with a new hybrid heat pump, to be installed in an insulated but not draft-proofed garage.  (In the Seattle area,… Looking at replacing a two decade old gas water heater with a new hybrid heat pump, to be installed in an insulated but not draft-proofed garage.  (In the Seattle area,…Read MoreGreenBuildingAdvisor