[Extend Your Pool Season]: Nothing beats a warm swimming pool for your kids, pets and the whole family! ECOPOOLTECH Pool Heater EU50S, highly efficient, low operating cost, extend the fun for a few more months!.[Energy Save]: The EU50S pool heater based on heat pump technology. The operation only requires very limited electric input, hence its heat conversion rate can reach a score of COP 5.44. In other words, for every cent of electricity spent, 5.44 times heat is generated!.[Ideal for Above Ground Pools]: The Pool heat pump EU50S is designed for above ground pools with up to 4000 gallons of water (No bigger than 15ft round or 9x18ft rectangular). This unit can operate at outdoor temperatures of 40ºF to 105 ºF, while the pool can be heated up to 100ºF.[Easy to Install]:The pool heater EU50S allowing fast and easy hookup without professional installation. Just hook up several quick connectors, then plug and play. No need tools, no need plumber..[High Specs] The pool heat pump EU50S equiped with powerful compressor, output 12000BTU/hr. Pure titanium heat exchanger safe for salty water. Intelligent control system, easy to operate.