Lub qhov rooj hluav taws kub yog lub qhov rooj uas tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev tiv thaiv hluav taws, kev ncaj ncees thiab thermal rwb thaiv tsev nyob rau qee lub sijhawm. Cov qhov rooj hluav taws feem ntau yog nyob rau hauv qhov chaw nres tsheb kaw, kaw lub elevator, cov kav dej, thiab lwm yam. Thaum nws nyuaj rau teeb tsa phab ntsa hluav taws lossis qhov rooj hluav taws hauv lub tsev, yuav tsum siv lub qhov rooj hluav taws kub hloov, thiab nws yuav tsum tau tiv thaiv los ntawm ib daim ntaub thaiv dej.