Solar heaters for above ground pools
What good use is a pool when it's to cold to swim in? That's right, none! There are many ways of heating a pool, like heaters running on propane gas or electricity. Propane gas heaters however require you to think about exhaust gasses and electric heaters can really drive up your electricity bill, especially with a large pool. There however is also a much more cheaper and greener alternative!
Solar heaters
Solar pool heaters utilize the heat of the sun to heat the water in your pool. This is not only way cheaper than propane gas or electric heaters, it's also a more green method. Don't be fooled by the initial mental picture most people have when something is called green, solar pool heaters really will do the job, from early spring to late fall!
Solar pool heaters are of course placed above ground, preferrable on a flat, horizontal surface. In some cases a slightly towards the sun sloped underground can even further increase the effect solar heaters will have on your pool.
Above ground pools
Solar pool heaters make an ideal method to heat above ground pools. Since above ground pool owners typically only set up their pool during summer time, there virtually always will be enough sun to heat your above ground pool.
Another advantage is that solar heats typically can be laid over unused parts of your garden, requiring only the hoses from the pump and back to the pool to be connected. This saves a lot of hassle and maintenance from having to keep an eye on your propane heater or having to build your own high power electricity network in your backyard. This makes solar pool heaters ideal additions to your above ground pool featuring a true 'plug and play' usage style.
Considerations
Note that in order to effectively use solar pool heaters, you'll need free space near your pool, which receives plenty of sunlight during the day. Make sure you think about where you want to place your solar heater before even considering buying one.
Also keep in mind that in order to heat a typical pool using solar heaters, you'll need to cover quite a bit of ground with solar heaters. While you'll surely not have to sacrifice your whole garden, solar heaters are notable less compact than propane or electric heaters.
Conclusion
Solar pool heaters make a perfect addition to your above ground pool. In exchange for the few almost non-existant disadvantages, solar heaters will supply you with load of free warm water from spring to fall!