National Energy Control Services recommends the Rentar fuel catalyst technology to help reduce fleet fuel costs and emissions. Rentar works by separating clustered fuel molecules before combustion to increase surface area exposure to oxygen, improving combustion efficiency. Testing by numerous government and private organizations has independently verified that Rentar reduces fuel consumption, greenhouse gases, and other pollutants while extending engine life. Customers report a return on investment within 6-12 months after installing Rentar, which takes about an hour and requires no additives or maintenance.