GAME 4524 SolarPro XB - Solar Heater for Above Ground Pools (Older Model) Heat your pool the green way using free energy from the sun Designed for any type of above ground pool less than 5000-gallon - no additional adaptors necessary On average increases the pool water 5 degrees in 5-10 days depending on the size of the pool Easy to install - no gas or electricity needed Spave saving and aesthetically pleasing when compared to solar panels Heat your pool water the GREEN way using free energy from the sun! Designed for any size above ground pool with a filter/pump less than 1/2 HP - no additional adaptors necessary. On average increases the pool water 5 degrees in 3-8 days depending on the size of the pool. Easy to install - no gas or electricity needed. Space saving and aesthetically pleasing when compared to solar panels.