Using a solar water heater can reduce your home's water heating costs by 50 to 90 percent. Rheem's new active solar water heating system, Solpak, is a way to start. Available with two 3-by-8-foot or two 4-by-8-foot panels and in 80- and 119-gallon capacities, the closed-loop system comes with everything needed for installation, including a heat exchanger tank, collector panels, controller, multi-speed pump, and thermal expansion tank. The heater is also eligible for a stimulus package tax credit for up to 30 percent of the installation cost.
Starting at about $3,500, Rheem