Warshadaha AHU waa qalab hawo lagu hago kaas oo loo qaabeeyey si waafaqsan baahida mashruuc ee cayiman, oo lagu daray qaboojinta, kululaynta (biyaha/ uumiga/gaaska gubanaya iwm), humidaynta/huurka (huumiga/ buufiska/ wheel iwm), hawada-nadiifinta (dhaqista/ shaandhaynta/electrostatic iwm), soo kabashada tamarta, iyo qaar ka mid ah hawlaha khuseeya si loo abuuro jawi gudaha gudaha ugu fiican si loo qanciyo habka farsamada wax soo saarka ee aqoon isweydaarsiga warshadaha.

Holtop ayaa naftayada u huraynay dhismaha tayada hawada ee dhismaha warshadaha muddo tobanaan sano ah laga soo bilaabo naqshadaynta cutubka, wax soo saarka, warshadaynta hore iyo tijaabinta, dhoofinta, rakibaadda goobta, hawlgelinta, tababarka iyo dayactirka.Waxaan bixinaa doorashooyin dabacsan si aan u buuxino shuruudaha xaruntaada ama habka wax soo saarka.Waxaan haynaa 50B, 80C, 80B taxane ah oo loogu talagalay kala duwanaansho awoodeed.