Iklasi ye-insulation ibhekisela kwikhono lezinto ezikhuselayo zokumelana nokushisa, okubaluleke kakhulu kwiintlobo ezahlukeneyo zezicelo, ukusuka kwiinkqubo zombane ukuya kwisakhiwo sokwakha. Ikwayenye yeeparamitha eziphambili ze injini yombane. Ukuhlelwa kweeklasi ze-insulation kubalulekile ukuqinisekisa ukuba izinto eziphathekayo zinokumelana noluhlu oluthile lokushisa ngaphandle kokuthotywa okanye ukulahlekelwa ukusebenza kwayo. Iiklasi zokugquma zihlulwe ngokubanzi zibe ngamacandelo amaninzi: A, E, B, F, H, Y, kunye noC, nganye imele inqanaba elahlukileyo lokumelana nobushushu.
Kwizixhobo zombane ezifana neejenereyitha,iimotor ze-ac zesigaba ezintathukwaye olunye uthotho lwe iinjini zombane, izinto zokugquma zimela ubuthathaka obubalulekileyo. Ezi zixhobo zichaphazeleka ngokukodwa kumaqondo okushisa aphezulu, okukhawuleza ukuguga kunye nomonakalo. Izinto ezahlukeneyo zokugquma zineempawu ezahlukeneyo zokumelana nobushushu, kunye nezixhobo zombane ezisebenzisa izixhobo zokugquma ezahlukeneyo zinezakhono ezahlukeneyo zokunyamezela ubushushu. Ngoko ke, izixhobo zombane eziqhelekileyo zinomlinganiselo ophezulu wokushisa osebenzayo.
Ukuhlelwa kuqala ngeKlasi A, efanelekileyo kwizicelo ezisezantsi zokushisa, kunye neKlasi C kwiindawo eziphezulu zokushisa. Iklasi nganye inxulumene ngokusondeleyo nokumelana nobushushu be-insulation, okuthetha ukuba iklasi ephezulu, inkulu ikhono lezinto eziphathekayo zokumelana nobushushu obugqithisileyo ngaphandle kokubeka esichengeni ukuthembeka kwayo kwesakhiwo. Umzekelo, ukugquma kuKlasi B kunokumelana namaqondo obushushu ukuya kutsho kwi-130°C, ngelixa udidi H lunokumelana namaqondo obushushu angaphezu kwe-180°C.
Izixhobo zokugquma zinokwahlulwa ngokubanzi zibe ngamacandelo amathathu: igesi, ulwelo, kunye nokuqinileyo. Ukufakwa kwegesi ngokubanzi kubandakanya ukusetyenziswa komoya okanye ezinye iigesi ukubonelela ukumelana nobushushu kwaye kudla ngokusetyenziswa kwizicelo ezifana neefestile eziphindwe kabini. I-insulation liquid, ngakolunye uhlangothi, iquka izinto ezifana neoli okanye iigels ezigcwalisa indawo kunye nokubonelela ngomqobo we-thermal. Ukugquma okuqinileyo kubandakanya izinto ezahlukeneyo, kubandakanya igwebu, i-fiberglass, kunye nerabha, ezihlala zisetyenziswa kwimizi-mveliso nakwindawo yokuhlala.
Ukuqonda ulwahlulo lwamabakala e-thermal insulation kubalulekile kwiinjineli, abakhi bezakhiwo, kunye nabakhi kuba ichaphazela ngokuthe ngqo ukusebenza kunye nokhuseleko lolawulo lwe-thermal kwiinkqubo ezahlukeneyo. Ukukhetha ibakala elifanelekileyo lokufakelwa kwe-thermal kuqinisekisa ukuba izinto eziphathekayo zisebenza ngokufanelekileyo phantsi kweemeko ezithile, ekugqibeleni zifezekise ukonga amandla kunye nokuqina okuphuculweyo. Njengoko itekhnoloji ihambela phambili, uphuhliso lwezixhobo ezitsha zokugquma i-thermal luyaqhubeka, luthembisa ukusebenza ngcono kunye nokuzinza kwixa elizayo.