Sefekitari yemhando ine makore anopfuura makumi matatu echiitiko chefiriji, kambani yecolku ine mitsetse yezvigadzirwa makumi matanhatu. Mafiriji emota maMini, mafiriji ekumisasa, maairconditioner anotakurika, RV air conditioners, nezvimwe zvose zvine simba. Imwe yeGC yakatevedzana, iyo GC60 yekunze firiji, ine 59L kugona, 12v/24v magetsi ekupa zvinodiwa, yakakwirira-inoshanda insulation mapaneru, uye HIPS zvinhu mukati. Yakashongedzerwa nemadhirowa uye mavhiri panguva imwe chete, inogona kupa kuita kwakanakisa kungave kunze kana kumisasa.