Compressors, blowers, and vane type pumps are all designed to move air which creates either a vacuum or positive pressure.



All compressors are vacuum pumps and all vacuum pumps are compressors. Confusing? The air molecules being removed from a space create a vacuum (absence of molecules) and molecules added to a space create pressure (surplus of molecules). Compressors, blowers ,and vane type pumps are really molecule movers.



The ability (efficiency) of these devices to move molecules is really a function of how tight the internal spaces are constructed to move molecules.

A pump efficiency comparison is as follows -



Positive displacement pumps move 4-5 cfm of air per horsepower and can generate high pressures and deep vacuum levels.



Vane type pumps move 15 to 20 cfm of air per horsepower. They generate pressures to 25 psig and vacuum to 29.84" Hg.



Blowers move 30 to 60 cfm of air per horsepower. They generate pressures to ~ 7 psig and vacuum to ~ 12"  Hg.



Moving molecules can be expensive if you do not consider your end requirements. Assume you need 30 cfm at 5 psig for clearing debris from an area. Using a positive displacement air compressor will require ~ 6 horsepower when a 1 horsepower blower will generate the same air volume. The savings using a blower amounts to 5 horsepower or 3.73 kilowatts of electricity. If you need this air for 400 hours a month, electrical savings would be $ 1790 ($.10 per kwh) per year using a blower. Electrical savings would pay for the blower. Further benefits include no friction losses in the compressed air piping and reduced maintenance.



A central vacuum or pressure system combines multiple pumps with automatic operation to meet your needs. Cuts operating costs, noise, maintenance and AC costs.



Lots of air is used for debris removal and clean up on equipment. In many cases air volume and not pressure is what is needed to get the job accomplished. We do not sell air compressors but do offer a complete range of blowers and vane pumps. Call for application assistance.