HVLS imayimira High Volume Low Speed, ndipo imatanthawuza mtundu wa fan womwe umapangidwa kuti uzisuntha mpweya wambiri pa liwiro lotsika. Mafanizi amagwiritsidwa ntchito nthawi zambiri m'mafakitale ndi malonda kuti apititse patsogolo kayendedwe ka mpweya ndikupanga malo abwino kwa ogwira ntchito ndi makasitomala.Ubwino waukulu waMafani a HVLSndi kuthekera kwawo kusuntha mpweya wambiri pogwiritsa ntchito mphamvu zochepa. Izi zimawapangitsa kukhala njira yothetsera mphamvu yozizirira komanso mpweya wabwino m'malo akuluakulu. Mafani a HVLS nthawi zambiri amakhala akulu kuposa mafani achikhalidwe, okhala ndi mainchesi kuyambira 7 mpaka 24 mapazi. Kukula kwawo kumawathandiza kuti azitha kuphimba malo ambiri ndikupanga kamphepo kayeziyezi kamene kamamveka pamalo onse.

Kuphatikiza pakuwongolera kayendedwe ka mpweya, mafani a HVLS atha kuthandizanso kuchepetsa mtengo wamagetsi powonjezera kapena kusintha makina amtundu wa HVAC. Poyendetsa mpweya bwino, mafanizi angathandize kusunga kutentha kosasinthasintha m'nyumba yonse, kuchepetsa kufunika kwa makina otenthetsera ndi ozizira kuti agwire ntchito molimbika. Izi zitha kubweretsa ndalama zochulukirapo komanso ndalama zotsika mtengo. Mafani a HVLS amagwiritsidwa ntchito kwambiri m'malo osungiramo zinthu, malo opangira zinthu, malo ochitira masewera olimbitsa thupi, ndi malo ena akuluakulu omwe kufalikira kwa mpweya ndi kuwongolera kutentha ndikofunikira. Atha kugwiritsidwanso ntchito m'malo akunja monga ma patio ndi ma pavilions kuti apange malo abwino kwa omvera.

Zonse,Mafani a HVLSndi njira yotsika mtengo komanso yopatsa mphamvu kuti ipititse patsogolo kayendedwe ka mpweya komanso kutonthoza m'malo akulu. Kukhoza kwawo kusuntha mpweya waukulu pa liwiro lochepa kumawapangitsa kukhala osankhidwa bwino pazinthu zambiri zamalonda ndi mafakitale. Kaya ndikuchepetsa mtengo wamagetsi, kuwongolera chitonthozo cha ogwira ntchito, kapena kupangitsa malo osangalatsa kwa makasitomala, mafani a HVLS amapereka maubwino angapo kwa mabizinesi ndi mabungwe omwe akufuna kukonza mpweya wawo wamkati komanso chitonthozo.