The Lunt Marymor Company Sells solar hot water systems. (Hydronic heating.) They can also replace your water-wasting toilet with an EBMUD approved high efficiency toilet. Website: www.luntmarymor.com/Email: service@luntmarymor.comPhone: 510 985-2889Mailing Address:1270 45th StreetEmeryville, CA 94608Date Updated: 12/19/2013