I have been working on a high performance air collector for over 5 years now. The result is the SolarSheat 1500GS HE (High Efficiency). Advanced simulation and modelling shows an efficiency between 75-80.2 %. This is the result of five elements: superior absorber technology(TINOX), new glass, insulation material patented SolarSheat frame/mounting system and customized air direction technology. The SolarSheat 1500GS HE has the same great patented frame/ mount technology and along with these new elements can provide a 50% increase in efficiency. I expect the energy delivered can be 1.5 kW/hr or approximately 5000 BTU/hr on a clear sunny day.