Ma muli o nā mea hoʻohui kemika, hiki ke hoʻokaʻawale ʻia nā mea hoʻoheheʻe chiller ʻoihana i 5 mau ʻāpana: nā mea hoʻohuihui inorganic, freon, nā mea hoʻoheheʻe hydrocarbon saturated, nā mea hoʻoheheʻe hydrocarbon unsaturated, a me nā mea hoʻoheheʻe azeotropic. E like me ka condensing kaomi, chiller refrigerants hiki ke hoʻokaʻawale 'ia i loko o 3 waeʻano: kiʻekiʻe-mehana (haʻahaʻa-pressure) refrigerants, medium-mehana (medium-pressure) refrigerants, a me haʻahaʻa-mehana (kiʻekiʻe-pressure) refrigerants. ʻO nā refrigerants i hoʻohana nui ʻia i nā chillers ʻoihana ʻo ammonia, freon, a me nā hydrocarbons.