The new 2011, G4 Model, from Global Water is a premium Hot/Cold Bottle-less Water Cooler plumbed directly in to your cold water line. The G4 has easy to use microprocessor control panel, adjustable heating and cooling capabilities with a modern look that guarantees quality, reliability, and easy serviceability. The unit is equipped with a hot water lock to prevent children from burning accidents, electric shut off valve to prevent overflows and stainless steel reservoirs to keep water safe. The G4 is also equipped with a 3-stage filtration system or a 4-stage Reverse Osmosis purification system (RO) which is assembled in the USA. The G4’s sleek and stylish design is sure to fit in any home or office setting. Specifications Shipping Weight: 60 lb. Cold tank volume 1 gal Hot tank volume .55 gal Cooling Rate: 1.5 gal/hr 37-50 ºF Heating Rate: 1.5 gal/hr 180 ºF Voltage: 115 VAC Power Required: 600w max Dimensions: 13" W x 15" D x 42" H Warranty Information: 3 Years Refrigeration System Warranty 1 Year All Other Parts Filtration System G4F (Optional) Stage 1: 5 micron Sediment Stage 2: 10 micron Activated Carbon Stage 3: Post Carbon Reverse Osmosis G4RO (Optional) Above 3 stages plus Stage 4: 50-GPD RO Membrane