The G5 model is a premium high capacity cooler. It holds 5 gallons (17 liters) and dispenses Hot/Cold as well as Ambient Water. The G5 features a built in cup holder, and a drain collection tank that catches overflow from the faucets. It has an easy to use microprocessor control panel, adjustable cooling capabilities with a modern look that guarantees quality, reliability, and easy serviceability. The G5 is also equipped with a hot water lock to prevent children from burning accidents, and surgical grade stainless steel reservoirs to keep water safe from bacteria. This model is equipped with a 4 stage Reverse Osmosis filtration system.3 Stage Filtration or 4 Stage Reverse Osmosis Filtration TechnologyStage 1: The first stage is a 5 micron Sediment filter that helps improve Sediment such as sand, rust, and silt that is present in most municipal water sources.Stage 2: 1 The second stage of filtration is a 2 micron, granulated activated Carbon filter. This filter uses an advnced Carbon technology to remove hundreds of cancer-causing constituents such as pesticides, insecticides, petrochemicals, M.T.B.E''s, PCB''s, defoliants, and benzene.Stage 3: The 3rd stage utilizes Reverse Osmosis technology, which removes any molecular compounds smaller in size than water molecules, Such compounds include salt, manganese, iron, fluoride, lead, and calcium.Stage 4: The 4th and final stage is a 0.5 micron Carbon block filter, which gives the water a final "polish". It removes 99% of lead and microbial cysts such as giardia and cryptosporidium. It also ensures that all chlorine has been removed, and that the water entering the holding tanks is completely odorless.Features: • Large dispensing gap ideal for filling large bottles•  LED lights let you know water has reached the ideal temperature• Filter assembly is easily accessible • Stainless steel hot and cold tanksSpecifications:Dimension: 13"W x 14"D x 48"HShipping Weight: 77lbCold tank volume: 1 galHot tank volume: .5 galCooling Rate: 1.5 gal/ hr 37-50 degrees FHeating Rate: 1.3 gal/hr 180 degrees F