How do I size an industrial air compressor?

Size a compressor by the total CFM (cubic feet per minute) your tools and equipment require at their operating PSI, then add roughly 30% headroom for future growth and to avoid running the unit at 100% duty. Add the CFM of every tool that may run simultaneously, match the required pressure (most shop applications run 90-125 PSI), and confirm your available electrical supply (voltage and phase). A1 Compressor Warehouse offers free sizing support to match the right compressor to your application.

What is the difference between oil-free and oil-lubricated air compressors?

Oil-lubricated compressors use oil to lubricate and seal the compression element, offering long life and lower cost for general industrial use, but they require oil changes and can carry trace oil into the air. Oil-free compressors deliver Class 0 air with no oil in the airstream, which is essential for medical, dental, food, electronics, and pharmaceutical applications where any oil contamination is unacceptable. Anest Iwata oil-free scroll compressors are a common choice for these clean-air needs.

What size air compressor do I need for air tools?

Check the CFM requirement for each air tool and add the CFM of all tools that will run at once, then add about 30% headroom. Light tools like impact wrenches need 3-5 CFM, while continuous-demand tools like sanders or grinders can need 8-12 CFM or more. For most professional shops a two-stage compressor in the 5-10 HP range covers a single-bay operation; larger shops and production lines typically move to rotary screw compressors for continuous duty.

Is A1 Compressor Warehouse an authorized dealer?

Yes. A1 Compressor Warehouse is an authorized dealer for Atlas Copco, Anest Iwata, Mattei, Schulz, and EL-AV. Every product ships with genuine OEM parts and full manufacturer warranty. We serve customers nationwide with fast US shipping and provide service in the Carolinas.

What is the difference between a rotary screw and a reciprocating air compressor?

Reciprocating (piston) compressors are ideal for intermittent use and lower-duty applications, delivering high pressure at a lower upfront cost. Rotary screw compressors are built for continuous duty, running cooler and quieter with steadier air delivery, which makes them the standard for shops and plants that use air throughout the day. Variable-speed (VSD) rotary screw models further cut energy costs by matching output to demand.

Do air compressors come with a warranty and shipping?

Yes. All compressors sold by A1 Compressor Warehouse include the full manufacturer warranty and genuine OEM parts. We ship nationwide across the United States, offer same-day quotes, and provide expert sizing support to help you select the right unit before you buy.

Water Separators & Drains

A1 Compressor Warehouse stocks water separators and condensate drains — the first line of defense against moisture in your compressed air system. Removing bulk water and draining accumulated condensate protects everything downstream, from filters and dryers to tools and finishes.

Cyclonic water separators spin compressed air to fling out bulk liquid water before it reaches your filtration and point-of-use equipment — a simple, maintenance-free way to knock out the majority of liquid moisture. Paired with automatic or electronic condensate drains, they keep collected water moving out of the system without manual intervention or wasted air. Together they're an inexpensive, high-impact upgrade to any compressed air install.

We carry cyclonic separators, automatic drains, and electronic condensate drains compatible with all major brands, all genuine OEM equipment with full manufacturer warranty.

Not sure what your system needs? Talk to a specialist for a free consult — same-day quotes on in-stock equipment, shipped nationwide.