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.

Anest Iwata Oil-Free Compressors

A1 Compressor Warehouse is an authorized Anest Iwata distributor stocking their full line of oil-free scroll air compressors. These are the units medical, dental, laboratory and food-processing facilities choose when air purity is non-negotiable.

Anest Iwata's oil-free scroll technology compresses air with no lubrication in the air path, delivering Class 0 certified clean air — zero oil contamination. The orbiting scroll design also runs remarkably quiet and with very little vibration, so units can sit in occupied clinical and lab spaces without a separate compressor room.

Our selection spans the Anest Iwata oil-free range from compact chairside and point-of-use units to larger multi-pump systems, many available with integrated drying and filtration for turnkey clean-air delivery.

Every unit ships with genuine OEM parts and full manufacturer warranty. Talk to a specialist for help matching air quality, flow and redundancy to your facility, request same-day quotes, and get fast US shipping.

Schulz SL-165E-US Reciprocating Air Compressor

SchulzAnest Iwata SL-165E-US Oil-Free Scroll Air CompressorSKU SL-165E-US

14.8 CFM @ 115 PSI

$7,200.00

Anest IwataAnest Iwata SLT-7.5 Oil Less Scroll CompressorSKU SLT-7.5

21.2 CFM80 gallon

$20,235.00

Anest IwataAnest Iwata SLT-3 Oil Less Scroll CompressorSKU SLT-3

3 HP8.5 CFM30 gallon

$12,350.00

Anest IwataAnest Iwata SLT-5 Oil Less Scroll CompressorSKU SLT-5

5 HP13.7 CFM60 gallon

$14,725.00

Anest IwataAnest Iwata SLT-10 Oil Less Scroll CompressorSKU SLT-10

10 HP27.6 CFM80 gallon

$23,750.00

Anest IwataAnest Iwata SLT-2 Oil Less Scroll CompressorSKU SLT-2

2 HP5.4 CFM30 gallon

$10,925.00

Anest Iwata OFT-30 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-30DHH-240 Oil Less Reciprocating CompressorSKU OFT-30DHH

30 HP94 CFM240 gallon horizontal (duplex pumps)

$38,000.00

Anest Iwata OFT-20D Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-20D-120 Oil Less Reciprocating CompressorSKU OFT-20D

20 HP67 CFM120 gallon horizontal (duplex pumps)

$30,400.00

Anest IwataAnest Iwata SLE-60 Oil-Less Scroll Compressor (Modular Industrial Enclosed)SKU SLE-60

60 HP165 CFMModular cabinet (12 × 5 HP scroll heads)

$123,500.00

Anest IwataAnest Iwata SLE-50 Oil-Less Scroll Compressor (Modular Industrial Enclosed)SKU SLE-50

50 HP138 CFMModular cabinet (10 × 5 HP scroll heads)

$109,250.00

Anest IwataAnest Iwata SLE-40 Oil-Less Scroll Compressor (Modular Industrial Enclosed)SKU SLE-40

40 HP110 CFMModular cabinet (8 × 5 HP scroll heads)

$90,250.00

Anest IwataAnest Iwata SLE-30 Oil-Less Scroll Compressor (Modular Industrial Enclosed)SKU SLE-30

30 HP83 CFMModular cabinet (6 × 5 HP scroll heads)

$71,250.00

Anest IwataAnest Iwata SLE-20 Oil-Less Scroll Compressor (Modular Industrial Enclosed)SKU SLE-20

20 HP55 CFMModular cabinet (4 × 5 HP scroll heads)

$52,250.00

Anest IwataAnest Iwata SLE-15 Oil-Less Scroll Compressor (Modular Industrial Enclosed)SKU SLE-15

15 HP41 CFMModular cabinet (3 × 5 HP scroll heads)

$39,900.00

Anest IwataAnest Iwata SLE-10 Oil-Less Scroll Compressor (Modular Industrial Enclosed)SKU SLE-10

10 HP27.6 CFMModular cabinet (2 × 5 HP scroll heads)

$30,400.00

Anest IwataAnest Iwata SLE-5 Oil-Less Scroll Compressor (Industrial Enclosed)SKU SLE-5

5 HP13.7 CFMBase-mount, industrial enclosure

$13,490.00

Anest IwataAnest Iwata SLE-3 Oil-Less Scroll Compressor (Industrial Enclosed)SKU SLE-3

3 HP8.5 CFMBase-mount, industrial enclosure

$11,875.00

Anest IwataAnest Iwata SLE-2 Oil-Less Scroll Compressor (Industrial Enclosed)SKU SLE-2

2 HP5.4 CFMBase-mount, industrial enclosure

$11,400.00

Anest IwataAnest Iwata SLE-1 Oil-Less Scroll Compressor (Industrial Enclosed)SKU SLE-1

1 HP2.7 CFMBase-mount, industrial enclosure

$9,025.00

Anest IwataAnest Iwata SLTE-20D Oil-Less Scroll Compressor (Duplex Enclosed)SKU SLTE-20D

20 HP55 CFM120 gallon horizontal (duplex), sound enclosure

$45,600.00

Anest IwataAnest Iwata SLTE-15D Oil-Less Scroll Compressor (Duplex Enclosed)SKU SLTE-15D

15 HP41 CFM120 gallon horizontal (duplex), sound enclosure

$37,050.00

Anest IwataAnest Iwata SLTE-10D Oil-Less Scroll Compressor (Duplex Enclosed)SKU SLTE-10D

10 HP27.6 CFM120 gallon horizontal (duplex), sound enclosure

$28,500.00

Anest IwataAnest Iwata SLTE-7.5 Oil-Less Scroll Compressor (Enclosed)SKU SLTE-7.5

7.5 HP21.2 CFM80 gallon horizontal, sound enclosure

$22,040.00

Anest IwataAnest Iwata SLTE-5 Oil-Less Scroll Compressor (Enclosed)SKU SLTE-5

5 HP13.7 CFM60 gallon horizontal, sound enclosure

$15,200.00

Anest IwataAnest Iwata SLTE-3 Oil-Less Scroll Compressor (Enclosed)SKU SLTE-3

3 HP8.5 CFM30 gallon horizontal, sound enclosure

$13,490.00

Anest IwataAnest Iwata SLTE-2 Oil-Less Scroll Compressor (Enclosed)SKU SLTE-2

2 HP5.4 CFM30 gallon horizontal, sound enclosure

$13,300.00

Anest IwataAnest Iwata SLT-20D Oil-Less Scroll Compressor (Duplex)SKU SLT-20D

20 HP55 CFM120 gallon horizontal (duplex pumps)

$41,800.00

Anest IwataAnest Iwata SLT-15D Oil-Less Scroll Compressor (Duplex)SKU SLT-15D

15 HP41 CFM120 gallon horizontal (duplex pumps)

$36,100.00

Anest IwataAnest Iwata SLT-10D Oil-Less Scroll Compressor (Duplex)SKU SLT-10D

10 HP27.6 CFM120 gallon horizontal (duplex pumps)

$25,175.00

Anest IwataAnest Iwata SLBE Oil-Less Scroll Compressor (Enclosed)SKU SLBE

2 HP5.4 CFMBase-mount, sound enclosure

$8,550.00

Anest IwataAnest Iwata OFBSTE-7.5-H-80 Oil-Less Reciprocating Booster CompressorSKU OFBSTE-7.5-H-80

7.5 HP71 CFM80 gallon horizontal

$15,200.00

Anest IwataAnest Iwata OFB-15 Oil-Free Reciprocating CompressorSKU OFB-15

15 HP47 CFMBase-mount (no tank)

$12,825.00

Anest IwataAnest Iwata OFB-10 Oil-Free Reciprocating CompressorSKU OFB-10

10 HP33.6 CFMBase-mount (no tank)

$12,825.00

Anest IwataAnest Iwata OFB-7.5 Oil-Free Reciprocating CompressorSKU OFB-7.5

7.5 HP23 CFMBase-mount (no tank)

$11,400.00

Anest IwataAnest Iwata OFB-5 Oil-Free Reciprocating CompressorSKU OFB-5

5 HP16.6 CFMBase-mount (no tank)

$7,600.00

Anest IwataAnest Iwata OFB-3 Oil-Free Reciprocating CompressorSKU OFB-3

3 HP9.5 CFMBase-mount (no tank)

$5,890.00

Anest Iwata OFT-1 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-1-H-30 Oil Less Reciprocating CompressorSKU OFT-1

1 HP3.5 CFM30 gallon

$6,175.00

Anest Iwata OFT-2 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-2-H-30 Oil Less Reciprocating CompressorSKU OFT-2

2 HP6.5 CFM30 gallon

$7,600.00

Anest IwataAnest Iwata SLB-2 Oil Less Scroll CompressorSKU SLB-2

2 HP5.4 CFM

$8,075.00

Anest IwataAnest Iwata SLB-3 Oil Less Scroll CompressorSKU SLB-3

3 HP8.5 CFM

$8,740.00

Anest IwataAnest Iwata SLB-5 Oil Less Scroll CompressorSKU SLB-5

5 HP13.7 CFM

$10,260.00

Anest Iwata OFT-3 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-3-H-30 Oil Less Reciprocating CompressorSKU OFT-3

3 HP9.5 CFM30 gallon

$10,450.00

Anest Iwata OFT-5 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-5-H-60 Oil Less Reciprocating CompressorSKU OFT-5

5 HP16.6 CFM60 gallon

$12,350.00

Anest IwataAnest Iwata SLB-7.5 Oil Less Scroll CompressorSKU SLB-7.5

21.2 CFM

$15,200.00

Anest Iwata OFT-7.5 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-7.5-H-80 Oil Less Reciprocating CompressorSKU OFT-7.5

23 CFM80 gallon

$15,200.00

Anest IwataAnest Iwata SLB-10 Oil Less Scroll CompressorSKU SLB-10

10 HP27.6 CFM

$17,860.00

Anest Iwata OFT-10 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-10-H-120 Oil Less Reciprocating CompressorSKU OFT-10

10 HP33.6 CFM120 gallon

$19,000.00

Anest Iwata OFT-15 Oil Less Reciprocating Compressor

Anest IwataAnest Iwata OFT-15-H-120 Oil Less Reciprocating CompressorSKU OFT-15

15 HP47 CFM120 gallon

$22,800.00