HVAC kiv cua coil chav tsev tau hloov chav lossis cheeb tsam kev tswj hwm qhov kub thiab txias mus ib txhis, tshem tawm qhov xav tau rau cov pa ua haujlwm. Nws cov khoom tseem ceeb muaj xws li cov cua kub hloov pauv, kiv cua uas ua rau huab cua mus ncig zoo, thiab kev tswj hwm kev sib koom ua ke uas saib xyuas qhov kub thiab txias. Muaj ob hom FCUs - VFCs (Vertical Ntxuam Coil Units) thiab HFCs (Ntxuam Kab Ntsig), txhua qhov muaj qhov sib txawv.
Hauv kev tshawb nrhiav kom muaj kev nyab xeeb dua thiab muaj kev nyab xeeb dua ntawm kev zoo siab hauv peb lub tsev, kev paub txog lub peev xwm ntawm FCUs yog qhov tseem ceeb. Cov chav nyob muaj cua sov thiab txias peev xwm loj thiab yog ib feem ntawm cov txheej txheem dav dav ntawm kev siv hluav taws xob thiab kev ua neej nyob hauv ecologically.