Chigawo chochepa cha mphamvu yochepetsera kutentha kwa nyumba yonse chokhala ndi chowotcha chotentha kwambiri (mpaka 90%) kuti chipereke mpweya wabwino wokhazikika m'malo okhala.
Ndi ERV, mutha kusunga mazenera otsekedwa ndi zoziziritsira popanda kuda nkhawa ndi mpweya wamkati wamkati chifukwa zimatha kusunga mpweya wabwino popereka mpweya wakunja ndikutopetsa mpweya wamkati wamkati.
ERV ikabweretsa mpweya wabwino wokhala ndi kutentha kosasunthika komanso chinyezi m'malo otsekedwa, imatsitsa kuchuluka kwa tinthu tating'onoting'ono ta virus mumlengalenga ndi fyuluta yomwe imachotsa mpweya wokhazikika pakasintha mpweya.