Solar Energy Systems and Services FAQ
Most manufacturers of solar collectors for pool heating make radiator-like panels with large tubes through which the water flows and is heated.
The problem with those systems is that only a small percentage (around 30%) of the water comes in contact with the surface area of the collector, so it's not an efficient system.
In contrast, the collectors we install have many small channels through with the water flows, allowing over 70% of the surface area of the water to come in direct contact with the collector.
Your pool will heat faster and keep you more comfortable, while reducing your dependence on an auxillary heating source.