NE888 Features: -For above-ground pools.-Does not use propane or natural gas.-Natural gas and propane prices continue to soar, enjoy a warm pool with this ultra efficient non-polluting heat pump.-Built to last and backed by impressive warranties.-Exterior cabinet made of tough, durable resin that is weatherproof and will not rust or corrode in any location.-Super silent piston compressor makes this heat pump quiet as well as ultra-efficient.-Solid-state controls allow you to set your desired temperature.-Heat pump automatically calls for heat when the pool"s temperature drops below that setting.-Pro 600 a cupro nickel heat exchanger that is corrosion-free and impervious to pool chemicals. Assembly Instructions: -Assembly required. Dimensions: -Dimensions: 32" H x 30" W x 40" D. Warranty: -1 Year warranty on labor.-5 Year warranty on parts.