Whakakīia ki te wai tohanga (wai parakore) ki te taumata kua whakaritea. Whakamahanahia ki te wai tohanga. I te wā whakamahana, ka pupurihia te pēhanga parepare rerekē kua whakaritea ki runga ake i te pēhanga mamaoa kua mātotoru e tika ana i roto i te rūma e te hau kōpeke hei ārai i te kino o ngā ipu hua. Te whakahoromata mō te wā kua whakaritea i raro i te pēhanga parepare rerekē kua whakaritea me te tohatoha pāmahana kua whakamanahia i roto i te hua o te ±1℃. Te whakamatao ki te wai tohanga tuatahi, ka papua mā roto i te whakawhiti wera o waho kua whakamataohia e te wai whakamatao ka rehuhia ki runga i te kawenga. I te wā whakamatao, ka pupurihia te pēhanga parepare rerekē kua whakaritea ki runga ake i te pēhanga mamaoa kua mātotoru e tika ana, i te pēhanga parepare pumau rānei i roto i te rūma.

Mā te hau pēhanga kua kōpeketia ka ārai i te kino o ngā ipu hua. Ka mimiti katoatia te wai e rere ana, ka heke rānei ki tētahi taumata mō ngā huringa e whai ake nei. Ka whakaitihia te pēhanga o te rūma ki te pēhanga hauātea (ka tukuna te raka o te tatau).

E ai ki te whakamahi i ngā rorohiko me ngā taputapu mahi-teitei, ka piki haere te pumau me te mōhio o te mīhini, ā, ka pai ake mō te pūnaha whakahaere mohio-teitei o ngā awheawhe hou. I taua wā, ko te hanga pai, ngā whirihoranga rongonui o te ao me te ratonga whai muri pai ka nui ake te pai o tō mahi.