For solar thermal hot-water systems in Santee, Solahart on Prospect Avenue distributes units manufactured by the Australian parent brand, which has installed more than one million systems worldwide since 1953. The operation services both rooftop-mount and ground-level split-system configurations, broadening the solar-thermal market alongside photovoltaic contractors such as Jamar Power Systems in the same Woodside–Prospect industrial corridor. Solahart's thermosiphon models use copper-riser flat-plate collectors bonded to a black polyester-powder-coated aluminum absorber, transferring solar gain to a roof-mounted storage tank without mechanical pumps. Split-system layouts relocate the storage tank to ground level while rooftop collectors face south, reducing visible roofline impact on properties across Santee's residential neighborhoods near Carlton Hills and Fanita Parkway. Replacing a conventional gas or electric tank heater with a solar thermal unit often requires supply-line modifications coordinated with plumbing contractors at Water Heaters Only, Inc on Ablette Road. High-output models circulate up to 302 liters through the collector array, and an integrated electric booster element maintains target delivery temperature during extended overcast periods without reverting to fossil-fuel backup.