Ngobuchwepheshe besimanje bokwakha, izindawo zasendlini zinomoya omkhulu kunangaphambili, zigcina ingaphakathi nangaphandle ngaphandle. Kodwa ukuvala umoya omusha kungaphazamisa ikhwalithi yomoya nokunethezeka. I-Airwoods Single Room ERV iqinisekisa ukuhlinzekwa komoya ohlanzekile, ohlungiwe okuqhubekayo ngaphandle kokumosha amandla, ikusiza ugcine indawo yasendlini enempilo nenethezekile ngendlela efanele.

