Chitofu cha gasi ndi chitofu chomwe chimawotchedwa ndi gasi woyaka monga syngas, gasi wachilengedwe, propane, butane, gasi wamafuta amadzimadzi kapena mpweya wina woyaka.Gasi asanabwere, mbaula zophikira zinkadalira mafuta olimba monga malasha kapena nkhuni.Tekinoloje yatsopano yophikirayi inali ndi mwayi wosinthika mosavuta ndipo imatha kuzimitsidwa ikapanda kugwiritsidwa ntchito.Zitofu zamagesi zidayamba kuchulukirachulukira pomwe ng'anjoyo idaphatikizidwira m'munsi ndipo kukula kwake kudachepetsedwa kuti kugwirizane bwino ndi mipando yonse yakukhitchini.