Hot Water Heat Pump

• 15000 BTU - 65C max - [1]. $3500 for the heat pump outdoor unit only [2], $5400 for system [3]. Outdoor unit already has water heat exchanger, so that's all we need.
• Rheem Performance Platinum - has heat pump only mode, heat pump is only 4200BTU. [4] (1.2kW heat pump + 4500 electric element)
• Accelera, $3k, only 1800W heat pump output [5]
• Ruud - 4200 BTU compressor = $1664. If get 6 of these, that is $10k. [6]