ChillKing 1 HP Outdoor Spot Chillers are specifically designed for water-cooled gardening applications. Compared to aquarium chillers, these chillers put out more BTUs of true cooling power than any comparable chiller on the market. These are the same units as the window/indoor mount units but come with a water-proof controller and some sealed internal components. These units utilize an efficient scroll compressor and a custom made, all copper heat exchanger, making them them the most energy efficient chillers you can buy - guaranteed. Assembled in the USA. All inclusive 90 day warranty with a 1 year warranty on parts. 1 HP/12,000 BTU/11 amps/120v.