As air is exhausted from process equipment, heat is lost as well. Heat recovery systems help reclaim heat escaping with exhausted air, providing measurable energy savings. GFS heat recovery systems will provide an average 40-50% energy savings for air make-up systems serving the booth for both heating and cooling. These systems offer a low initial cost compared with heat wheel or heat pipe systems. With simple and reliable operation and low operating costs, they can pay for themselves in as little as 18 months.