It is important that you use a generator that is safe and certified. If you want an eco-friendly generator that does not degrade the environment, then you should go for a model that has been approved by the CARB or the California Air Resources Board. CARB is all about environmental protection and targets air pollution as one of the biggest enemies of the modern world. You should get a generator that abides by CARB’s rules and regulations. All the Firman generators mentioned on our list are certified by CARB, which means that they’ve been deemed safe to use.