Bouler ndi chida chamakina chomwe chimagwiritsa ntchito kutentha kwa mafuta kapena mphamvu zina kuti madzi otentha a madzi otentha kapena nthunzi. Tanthauzo loyambirira la mphika limanena za chidebe chamadzi chotentha pamoto, ndipo ng'anizo zimatanthauza malo omwe mafuta amawotchedwa. Boiler akuphatikiza magawo awiri: mphika ndi ng'anjo. Madzi otentha kapena nthunzi yopangidwa mu boiler imatha kupereka mphamvu mwachindunji pakupanga mafakitale ndi moyo wa anthu, ndipo amathanso kusintha mphamvu pogwiritsa ntchito mphamvu yamagetsi kudzera mu jenereta. Wofatsa yemwe amapereka madzi otentha amatchedwa madzi otentha owotcha, makamaka omwe amagwiritsidwa ntchito pamoyo, amakhalanso ndi ntchito yaying'ono pakupanga mafakitale. Mafuta opanga zotupa amatchedwa Steirt Boiler, nthawi zambiri amatchedwa boiler, omwe amagwiritsidwa ntchito kwambiri pamagetsi opangira mafuta, zombo, zombo ndi ma asitikali a mafakitale ndi migodi.
