Courtesy Stiebel Eltron
With 25.82 square feet of absorber area, Stiebel Eltron’s SOLkit 2 collector and system is designed to offset conventional water heating for a two- to three-person household. The kit includes an 80-gallon storage tank with in-tank backup electric element. The system comes with a 10-year warranty on the collectors, racks, and tank and is priced at about $7,800 (not including tankless backup shown).