In-ground pools are usually cover a larger area than above-ground pools. Therefore the solar pool heater performs at a lower rate. The pool pumps have to push and heat extra pool water as well. The water filter also runs out of its useful life earlier. On the contract, the above-ground solar pool heating system has to worry about heating less pool water due to the small surface area of the pool. The solar panel that works as an energy collector gets heat from the sun and transfer it into pool water quickly through a flow control valve.