A stationary air compressor is an air compressor designed for power. They are usually heavy-duty and push a lot of air, which makes them a good choice if you work often with pneumatic tools. If you are concerned about having the ability to use your tools longer, choose a higher capacity. A high-volume pump will also require less pump time. The best compressors are belt-driven. They also tend to be quieter than shaft-driven compressors. A 2-stage compressor offers the ability to move a higher volume of air quickly. These units are usually quite large and heavy. Stationary compressors made for residential use sometimes come with wheels and can be moved. They are still much harder to transport than portable models. Stationary compressors can easily weigh several hundred pounds.