ʻO 400L Air Source Heat Pump Water Heater he mea hoʻoheheʻe wai wela me ka pahu pahu 400L a me ka pā wela 2 HP, kūpono ia no 6-8 mau kānaka e hoʻohana i ka wai wela.
Hoʻokumu ʻia ka pūʻulu wela wela o ka ea me ka valve hoʻonui (throttle valve), compressor, condenser, evaporator a me nā mea nui ʻē aʻe.