Features: * For aquariums up to 160 gallons and 10 degrees pulldown * Energy efficient and QUIET rotary compressor * Titanium heat exchanger will not corrode under the harshest conditions such as saltwater * Flo-thru design. Requires an external pump or canister filter providing 100-400GPH * Industrial grade metal fan for quiet, high performance * Digital temperature controller. Easy to use, accurate, reliable. Also displays water temp. * 120v AC, 380 watts * R134a refrigerant * 1 year manufacturer warranty Our Via Aqua 650 canister filter/pump works great with this chiller.