Chifukwa anthu amagwiritsidwa ntchito poyitanitsa matepu a Steilers, majeheramu amitundu nthawi zambiri amatchedwa borailers. Boilers Steailers amaphatikiza mitundu yamafuta, koma amitundu amitundu sakhala ogwirira ntchito.
Jenereta ya nthunzi ndi chida chamakina chomwe chimagwiritsa ntchito mafuta kapena mphamvu zina kwa madzi otentha kuti apange madzi otentha kapena nthunzi. Malinga ndi gulu la malo okwerera boaler, jenererer ndi mwinjiro, ndipo kupanga ndi kugwiritsa ntchito kuyenera kukhala kosavuta.