As well as standard HVAC systems (Heatind, Ventilation & Air Conditioning), Auto Cool manufactures many specialized niche products tailor made to the exacting specifications of it's clientele. These include NBC (Nuclear, Biological & Chemical) protection systems for combat vehicles, special very light-weight ECU (Environmental control units) systems for portable structures such as tents, emergency hospitals etc. designated to combat NBC neutralizing agents, very small mobile electric units, marine and airborne A/C units and many other products. A different line of vehicle accessories includes the electrically operated automatic sliding door (ASD), the electrically operated automatic axial door (AAD) and an electrically operated automatic passenger step.