When looking for solar swimming pool heaters, you should look no further than Northern Lights Solar Tubs. Our solar swimming pool heating system is manufactured with advanced technology that provides heating to your pool during cloudy weather or in winter for indoor pools. We utilize a separate closed-loop solar pool system that eliminates the harmful pool water through a stainless steel or titanium heat exchanger. If you want to learn more details about our pool heaters, please call us at 1-800-759-8990.