Heat pump hydronic heater

摘要

A heat pump hydronic heater of the present invention includes: a sheath body 36 in which a refrigerant circuit 8 and a water refrigerant heat exchanger 5 are provided; an external radiator 2 which circulates a heating medium heated by the water refrigerant heat exchanger 5 and which makes the heating medium dissipate heat; and a heating medium outward port 21 and a heating medium return port 23 which connect the sheath body 36 and the external radiator 2 to each other through a pipe 3. A convex portion 41 is provided on a side of the sheath body 36. The heat pump hydronic heater of the invention has high workability, efficiency thereof can be enhanced, maintenance performance thereof is excellent, and the heat pump hydronic heater can be designed compactly.