The Use of Natural Refrigerants in Small Air Conditioners & Heat Pump Split Systems

Small air conditioning and heat pump split systems have traditionally used the refrigerant HCFC-22. In addressing the ozone depletion problem, most manufacturers have adopted either R-407C (an HFC blend), or more recently R-410A (also an HFC blend). However, both are potent greenhouse gases, restricted under the Kyoto Protocol. Thus, in solving the ozone depletion problem, many split systems contribute to climate change. In response, Earthcare has adopted the use of hydrocarbon refrigerants that are both ozone friendly and have a low global warming potential. The technical challenge has been to achieve compliance with the safety regulations governing the use of flammable refrigerants.