I-roller thermal heater iyisifudumezi esishisayo esisha, esiphephile, esisebenza kahle kakhulu kanye nokonga amandla, ingcindezi ephansi (ngaphansi kwengcindezi evamile noma ingcindezi ephansi) futhi inganikeza amandla okushisa aphezulu okushisa kwesithando somlilo esikhethekile semboni, ngamafutha okudlulisa ukushisa njengesiphathi sokushisa, ngokusebenzisa futha ukushisa ukuze azungeze othwala ukushisa, ukudluliswa ukushisa imishini ukushisa.
Isistimu kawoyela yokudlulisa ukushisa okushisa kagesi yakhiwe ngesifudumezi sikagesi esingaqhumi, isithando somlilo esithwala ukushisa okuphilayo, isishintshi sokushisa (uma sikhona), ibhokisi lokusebenza elingaqhume endaweni, iphampu kawoyela eshisayo, ithangi lokunweba, njll., okungaba esetshenziswa kuphela ngokuxhunywa kugesi, ukungenisa nokuthekelisa amapayipi omthombo ophakathi nendawo kanye nezinye izixhumanisi zikagesi.