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A solar pool heater can range in cost from about $3,500 to $8,000 with the average system costing around $5,500.here are three types of pool heaters to choose from solar, gas and electric: A solar pool heater can be installed for $3,500 to $8,000. Since the sun is free, it will cost you nothing to heat your pool from April through November.
Solar pool heater systems may be easier to install than gas and âlectric pool heaters, but larger systems will take more time. The average solar pool heater system can be installed for under $500, if done by a contractor. Solar panels are a perfect diy pool heater project that is not overly technical.For gas pool heaters, homeowners can usually do the labor of receiving the new heater or heat pump and placing it on a sturdy, level slab next to the pump and filter.imilar to gas pool heaters, a company may charge $400 â 500 to install one that you buy online. Solar pool heaters may be the easiest to install, with the exception of possibly involving steep roof lines. Panels are unrolled and secured to the roof, rack or just laid on the ground.