Selecting an Air Compressor | FAQs

How will compressed air be used?

• The type of work being performed is probably the most important factor in selecting a compressor.

Where will the compressor be located?

• Indoors: Heated environment to prevent air lines from freezing while providing sufficient ventilation to cool compressor where elvated temperatures may exist. Outdoors: Protection against ambient environment and provisions for cold-weather starting.

How much pressure (psi) is needed?

• Compressor discharge pressure must exceed the psi requirement of all pneumatic tools or equipment being operated.

How much airflow (cfm) is needed?

• Cubic feet per minute (cfm) is the measure of airflow the compressor can create. The measurement cfm is stated in two different forms: Piston displacement (pd) or actual cubic feet per minute (acfm). Always consider acfm, as it reflects the amount of useable compressed air.

What horsepower is required?

• Horsepower is directionally proportional to the cfm rating of the compressor. The higher the horsepower, the more air (cfm) the compressor can deliver. Do not rely solely on horsepower when specifying or selecting an air compressor.

What type and size of tank is needed?

• The tank provides a reserve of air to meet peak flow and pressure demands. The larger the receiver, the more reserve available. Tanks are available in vertical and horizontal designs; configuration is dependent upon available floor space.

What are the electrical requirements?

• Identify available electrical service before specifying an air compressor. Always have a qualified electrician review electrical requirements.

Know your power source!

• All residential and commercial buildings have 115V / 60 Hz power. Many residential, commercial, and industrial buildings have 230 V / Single Phase / 60 Hz power, but this should be confirmed first. When electric power is not available, select a gas-driven compressor. Do not use gas engine compressors indoors.