Firman is a trusted brand in generator manufacturing. With their great knowledge, they have developed air conditioners that can work with smallest size of generators and also inverters. now, you can run your air conditioners comfortably on inverter or solar system. 1.1hp, 1.6hp and 2.2hp available. The New Firman Gen Smartcool Inverter AC , Specially designed for the Nigeria family uses both Commercial Power and Generator.