Rheem. As the maker’s first all-inclusive active solar water heating system, SolPak offers energy-conscious homeowners a kit of products that helps simplify the solar installation process. SolPak comes complete with a heat exchanger tank, solar collector panels, a controller, multi-speed pump, thermal expansion tank, and other essential items. Collector panels are certified by the Solar Rating & Certification Committee, making the system eligible for federal tax credits for up to 30% of the installed cost. The maker says a SolPak system can reduce the water heating portion of a home’s energy bills by as much as 80%. www.rheem.com. –Lauren Hunter