Single-stage vs Two-stage air compressors

​This is simply a matter of power – two-stage compressors can achieve much higher air pressures by compressing the air further through a second set of pistons. Because of the additional machinery required, two-stage compressors are very heavy and are therefore made to be stationary. They are also extremely expensive (thousands of dollars) so unless you are a professional looking for something powerful for your business – don’t even bother considering these!