SmartPool S202 SolarArc2 - Solar Heating System for Pool 1 SolarArc2 can raise pool water temperature up to 5 degrees F within 2 days of sun SolarArc2 is the most compact and efficient way to heat your pool for FREE! Simple DIY installation in line with your existing filtration system HiFlo design eliminates additional Bypass Kit costs associated with other solar heating systems 5-Year Limited Warranty