Some of the features and benefits of pneumatic air compressors include different choices of power sources, such as electric or gas-powered. Depending on its intended use, a pneumatic air compressor can be equipped with a large stationary tank or be entirely portable by having no tank attached.
The size of the tank determines how long air tools can be used before the compressor needs to switch back on. For those who use compressors exclusively to operate tools such as pressure washers, a large tank is most convenient. For occasional use for small tasks such as inflating tires, a portable, tankless compressor is ideal.