Licheso tsa metsi li sebelisoa ho futhumatsa lihlahisoa ka har'a litanka tsa polokelo, haholo-holo ha lihlahisoa tsena li tiile kapa li tiile hanyenyane mochesong o tlaase.
Licheso tsa ho futhumatsa, tse etselitsoeng ka ho khetheha ho futhumatsa thepa feela ha li tlosoa, li boloka litšenyehelo tse ngata tsa matla kaha litlhoko tsa ho futhumatsa li fokotsehile haholo.Licheso tsa ho qoelisa tsa WNH li sebetsa hantle hoo e ka bang 100% ha oli ea matla le metsi a glycol metsi a futhumatsang a fumana ts'ebetso e phahameng haholo, haholo-holo mochesong o phahameng ka nako e telele.Lisebelisoa tsa mokelikeli oa mocheso li ka sebelisoa hammoho le li-exchangers tsa mocheso oa ho qoelisoa ho fana ka tharollo ea ho futhumatsa tanka ka bophara.Ka boiphihlelo ba lilemo tse fetang 10, lienjineri tsa WNH li ka u tataisa molemong oa ho khetha sistimi e sebetsang hantle le e baballang haholo bakeng sa kopo ea hau.