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Hybrid(gas and electricity)water heater. High-efficiency gas water heater develops a full ability of a heat pump, so the system achieves high energy-saving.
Yuji Kondo, Executive Officer & General Manager, R&D Div., Rinnai Corp.
Tetsuya Higuchi, Manager, Design Section, R&D Div., Rinnai Corp.
Katsunori Maegawa, Hiroaki Higashijima, Yoshikazu Kubo, Atsumi Suzuki, Design Section, R&D Div., Rinnai Corp.
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