EcoPlus 728711 Eco Plus Commercial Grade Chiller Fitting Kit Suitable for use with Reservoirs, hydroponic systems & aquariums Features a commercial-grade titanium heat exchanger for optimum performance and corrosion resistance High-quality Japanese compressor is extremely efficient and reliable Remote temperature controller with a 30 ft. Cord allows user to monitor & adjust chiller settings, when the unit is installed in a remote location Uses r410a refrigerant