Aside from space heating, hot water accounts for the largest energy expenditure of most households. Domestic Hot Water (DHW) works well in cold climates and can reduce water heating costs by 65% or greater. They provide a sensible, green solution to today’s soaring energy costs, and can produce significant dollar savings as the years go by. The first step to determining system design & cost begins with filling out our Domestic Hot Water Analysis & Questionnaire and then returning it to us via mail or fax.   Solar Domestic Hot Water Systems   The Closed-Loop Systems provide a unique solar hot water heating solution for both new and existing homes. Solar Space & Domestic Hot Water Heating   Closed-loop systems can also be incorporated into houses with radiant floor heating systems.