... water and heating, such as hotel, factory, school Model KFXRS-010/ⅡTKFXRS-020/ⅡTKFXRS-039/ⅡT KFXRS-057/ⅡT KFXRS-076 ... as hotel, factory, school, hospital, military, villa,village etc. Commercial Series Air Source Heat Pump (Circulation heating)