I have two of the Geospring heat pumps in two different houses. They are later model units, which were redesigned. Ge is no longer in the water heater business. In fact the divested of many non core businesses to stem the financial bleeding from their collapse in the last couple of years.
Mine have been in service for a couple of years, with no issues. Our power company has a rebate incentive that reduced the cost to $50 for the first one, and zero for the second one. I don’t know if the program is still in effect.
The biggest operational savings may be that we no longer have to run a dehumidifier in the basement.
I would buy another one in a heartbeat.