A single tank solar water heating system combines solar preheated water and backup heating into one tack, which is in contrast to a typical two tank systems which will separate these functions. In either case solar water heating systems can save 55% to 85% on your water heating costs. Since water heating is the second largest energy guzzler in your home this can mean some serious savings in the future. Most single tank solar water heaters feature a 240 watt electric heating element in the top half of the tank. This element heats the water in the upper half of the tank while the water in the lower half is heated by the solar collectors. If the environmental impact of you energy choices is important to a single tank system can offer impressive savings. Here is a brief description of shrinking your green house gas emissions when it comes to heating your water. Of water heating appliances tank system water heaters fueled with natural gas can create some of the greatest carbon dioxide emissions – actually at ton or more of CO2 per year. Replacing a gas fired tank style heater with a tankless gas water heater can cut more…