Manufacturers of the world’s most efficient Glazed Solar Air Heating Systems with a tested efficiency of 90.5%. Test report is available on the site. The system is a simple D I Y project provided you use safety equipment when working on a roof and have simple carpentry talents. Instructions are supplied with each system but it is a very basic method of hooking up the inlets and outlets with flexible ducting. Installation can be arranged by plumbers, Electricians, Roofers or Carpenters. The system... Read more