Mocheso oa litšila tsa motlakase oa likoloi tse hloekileng tsa motlakase o ke ke oa finyella litlhoko tsa ho futhumatsa mariha, kahoo ho futhumatsa mariha ke bothata boo likoloi tse hloekileng tsa motlakase li lokelang ho li rarolla.Li-heaters tse ntle tsa mocheso (mocheso o motle oa mocheso, PTC) li entsoe ka likarolo tse futhumatsang tsa ceramic tsa PTC le li-tubes tsa aluminium, tse nang le melemo ea ho hanyetsa mocheso o monyenyane le bokhoni bo phahameng ba ho fetisa mocheso, 'me ha li fetoloe ka mokhoa o fokolang motheong oa likoloi tsa mafura.