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.

145 PSI Air Compressors – A1 Compressor Warehouse

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

21.2 CFM80 gallon

$20,235.00

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

5 HP13.7 CFM60 gallon

$14,725.00

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

3 HP8.5 CFM30 gallon

$12,350.00

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

2 HP5.4 CFM30 gallon

$10,925.00

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

10 HP27.6 CFM80 gallon

$23,750.00

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 SLT-15D Oil-Less Scroll Compressor (Duplex)SKU slt-15d

15 HP41 CFM120 gallon horizontal (duplex pumps)

$36,100.00

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 SLTE-2 Oil-Less Scroll Compressor (Enclosed)SKU slte-2

2 HP5.4 CFM30 gallon horizontal, sound enclosure

$13,300.00

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-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 SLTE-5 Oil-Less Scroll Compressor (Enclosed)SKU slte-5

5 HP13.7 CFM60 gallon horizontal, sound enclosure

$15,200.00

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-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 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-3 Oil-Less Scroll Compressor (Enclosed)SKU slte-3

3 HP8.5 CFM30 gallon horizontal, sound enclosure

$13,490.00

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 SLBE Oil-Less Scroll Compressor (Enclosed)SKU slbe

2 HP5.4 CFMBase-mount, sound enclosure

$8,550.00

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

5 HP13.7 CFM

$10,260.00

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

10 HP27.6 CFM

$17,860.00

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

21.2 CFM

$15,200.00

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

3 HP8.5 CFM

$8,740.00

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

2 HP5.4 CFM

$8,075.00

Anest IwataAnest Iwata OFT-30DHH-240 Oil-Less Reciprocating Compressor (Duplex)SKU oft-30dhh-240

30 HP94 CFM240 gallon horizontal (duplex pumps)

$38,000.00

Anest IwataAnest Iwata OFT-20D-120 Oil-Less Reciprocating Compressor (Duplex)SKU oft-20d-120

20 HP67 CFM120 gallon horizontal (duplex pumps)

$30,400.00

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

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-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 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 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-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 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 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

Mattei CLASSIC ERC 11 IE3 15 HP Rotary Vane Compressor

MatteiMattei CLASSIC ERC 11 IE3 15 HP Direct-Drive Rotary Vane CompressorSKU 1400000240

15 HP58 CFM80 gallon

From $13,932.80

Mattei CLASSIC ERC 7 IE3 10 HP Rotary Vane Compressor

MatteiMattei CLASSIC ERC 7 IE3 10 HP Direct-Drive Rotary Vane CompressorSKU 1400000237

10 HP41 CFM80 gallon

From $11,530.40

Mattei CLASSIC ERC 5 IE3 7.5 HP Rotary Vane Compressor

MatteiMattei CLASSIC ERC 5 IE3 7.5 HP Direct-Drive Rotary Vane CompressorSKU 1400000234

7.5 HP26 CFM80 gallon

From $10,200.80

Mattei CLASSIC ERC 4 IE3 5 HP Rotary Vane Compressor

MatteiMattei CLASSIC ERC 4 IE3 5 HP Direct-Drive Rotary Vane CompressorSKU 1400000231

5 HP22 CFM80 gallon

From $9,330.40

MatteiMattei CLASSIC ERC 1 / 2 Direct-Drive Rotary Vane Compressor (3 HP)SKU 1400000354

3 HP6.7 CFM

From $5,800.80

Mattei OPTIMA 110/132/200 Variable-Speed Rotary Vane Compressor

MatteiMattei OPTIMA 110 / 132 / 200 Variable-Speed (VSD) Rotary Vane Compressor (150–275 HP)SKU 1100006662

150 HP353 CFM

From $123,815.20

Mattei RVX i 55/75/90 Variable-Speed Rotary Vane Compressor

MatteiMattei RVX i 55 / 75 / 90 Variable-Speed (VSD) Rotary Vane Compressor (75–125 HP)SKU 1400000314

75 HP189 CFM

From $71,357.60

Mattei RVX 55/75/90 Fixed-Speed Rotary Vane Compressor

MatteiMattei RVX 55 / 75 / 90 Direct-Drive Fixed-Speed Rotary Vane Compressor (75–125 HP)SKU 1400000308

75 HP327 CFM

From $61,220.80

Mattei BLADE i 15/18/22 VSD Rotary Vane Compressor

MatteiMattei BLADE i 15 / 18 / 22 Variable-Speed (VSD) Rotary Vane Compressor (20–30 HP)SKU 1400000228

20 HP60 CFM

From $24,260.80

Mattei RVD i 30/37/45/55 Variable-Speed Rotary Vane Compressor

MatteiMattei RVD i 30 / 37 / 45 / 55 Variable-Speed (VSD) Rotary Vane Compressor (40–75 HP)SKU 1400000304

40 HP100 CFM

From $40,319.20

MatteiMattei RVD 30 / 37 / 45 / 55 Direct-Drive Fixed-Speed Rotary Vane Compressor (40–75 HP)SKU 1400000300

40 HP207 CFM

From $29,976.00

Mattei RVD i 7/11 Variable-Speed Rotary Vane Compressor

MatteiMattei RVD i 7 / RVD i 11 Variable-Speed (VSD) Rotary Vane Compressor (10–15 HP)SKU 1400000288

10 HP26 CFM80 gallon

From $16,124.00

Mattei RVD 7/11 Direct-Drive Fixed-Speed Rotary Vane Compressor

MatteiMattei RVD 7 / RVD 11 Direct-Drive Fixed-Speed Rotary Vane Compressor (10–15 HP)SKU 1400000252

10 HP40 CFM80 gallon

From $11,874.40

MatteiMattei BLADE 15 / 18 / 22 Direct-Drive Fixed-Speed Rotary Vane Compressor (20–30 HP)SKU 1400000210

20 HP104 CFM

From $17,297.60

MatteiMattei Optima 200 W CompressorSKU MAT-OPTIMA-200-W-COMPRES-0629

150 HP353 CFM

Contact For Price Quote

MatteiMattei Optima 200 R CompressorSKU MAT-OPTIMA-200-R-COMPRES-0628

150 HP353 CFM

Contact For Price Quote

MatteiMattei Optima 132 W CompressorSKU 30001558

175 HP353 CFM

Contact For Price Quote

MatteiMattei Optima 132 R CompressorSKU 30001558

175 HP353 CFM

Contact For Price Quote

MatteiMattei Optima 110 W CompressorSKU 30001558

150 HP353 CFM

Contact For Price Quote

MatteiMattei Optima 110 R CompressorSKU 30001558

150 HP353 CFM

Contact For Price Quote

MatteiMattei ERC 5 Series CompressorSKU MAT-ERC-5-SERIES-COMPRES-0632

26 CFM80 gallon

$10,200.80

MatteiMattei ERC 7 Series CompressorSKU MAT-ERC-7-SERIES-COMPRES-0633

10 HP41 CFM80 gallon

$11,530.40

MatteiMattei ERC 4 Series CompressorSKU MAT-ERC-4-SERIES-COMPRES-0631

5 HP22 CFM80 gallon

$9,330.40

Mattei Classic ERC 1-2 Rotary Vane Compressor

MatteiMattei Classic Series ERC 1-2 CompressorsSKU MAT-CLASSIC-SERIES-ERC-1-0630

3 HP6.7 CFM

$5,800.80

MatteiMattei ERC 11 Series CompressorSKU MAT-ERC-11-SERIES-COMPRE-0634

15 HP58 CFM80 gallon

$13,932.80

MatteiMattei RVD 7 CompressorSKU MAT-RVD-7-COMPRESSOR-0584

10 HP40 CFM80 gallon

$11,586.40

MatteiMattei RVD 11 CompressorSKU MAT-RVD-11-COMPRESSOR-0585

10 HP40 CFM80 gallon

$14,348.00

MatteiMattei Blade 15 CompressorSKU MAT-BLADE-15-COMPRESSOR-0578

20 HP104 CFM

$17,297.60

MatteiMattei RVD 7i CompressorSKU MAT-RVD-7I-COMPRESSOR-0587

40 HP100 CFM

$18,744.80

MatteiMattei RVD 11i CompressorSKU MAT-RVD-11I-COMPRESSOR-0586

40 HP100 CFM

$19,601.60

MatteiMattei Blade 18 CompressorSKU MAT-BLADE-18-COMPRESSOR-0579

20 HP104 CFM

$21,252.00

MatteiMattei Blade 22 CompressorSKU MAT-BLADE-22-COMPRESSOR-0580

20 HP104 CFM

$23,244.80

MatteiMattei Blade 18i CompressorSKU MAT-BLADE-18I-COMPRESSOR-0582

20 HP60 CFM

$29,433.60

MatteiMattei Blade 15i CompressorSKU MAT-BLADE-15I-COMPRESSOR-0581

20 HP60 CFM

$24,260.80

MatteiMattei RVD 30 CompressorSKU MAT-RVD-30-COMPRESSOR-0588

40 HP207 CFM

$29,976.00

MatteiMattei RVD 37i CompressorSKU MAT-RVD-37I-COMPRESSOR-0594

40 HP100 CFM

$46,887.20

MatteiMattei Blade 22i CompressorSKU MAT-BLADE-22I-COMPRESSOR-0583

20 HP60 CFM

$31,789.60

MatteiMattei RVD 37 CompressorSKU MAT-RVD-37-COMPRESSOR-0589

40 HP207 CFM

$35,730.40

MatteiMattei RVD 30i CompressorSKU MAT-RVD-30I-COMPRESSOR-0593

40 HP100 CFM

$40,319.20

MatteiMattei RVD 45 CompressorSKU MAT-RVD-45-COMPRESSOR-0590

40 HP207 CFM

$45,404.80

MatteiMattei RVD 55i CompressorSKU MAT-RVD-55I-COMPRESSOR-0596

40 HP100 CFM

$62,281.60

MatteiMattei RVD 55 CompressorSKU MAT-RVD-55-COMPRESSOR-0591

40 HP207 CFM

$54,039.20

MatteiMattei RVD 45i CompressorSKU MAT-RVD-45I-COMPRESSOR-0595

40 HP100 CFM

$54,543.20

MatteiMattei RVX 55 CompressorSKU MAT-RVX-55-COMPRESSOR-0597

75 HP327 CFM

$61,220.80

MatteiMattei RVX 75 CompressorSKU MAT-RVX-75-COMPRESSOR-0598

75 HP327 CFM

$70,669.60

MatteiMattei RVX 55i CompressorSKU MAT-RVX-55I-COMPRESSOR-0600

75 HP189 CFM

$71,357.60

MatteiMattei RVX 55iW CompressorSKU MAT-RVX-55IW-COMPRESSOR-0602

75 HP189 CFM

$74,664.00

MatteiMattei RVX 55iR CompressorSKU MAT-RVX-55IR-COMPRESSOR-0601

75 HP189 CFM

$76,640.00

MatteiMattei RVX 75i CompressorSKU MAT-RVX-75I-COMPRESSOR-0603

75 HP189 CFM

$81,277.60

MatteiMattei RVX 75iW CompressorSKU MAT-RVX-75IW-COMPRESSOR-0606

75 HP189 CFM

$85,080.80

MatteiMattei RVX 75iR CompressorSKU MAT-RVX-75IR-COMPRESSOR-0605

75 HP189 CFM

$86,560.00

MatteiMattei RVX 90 CompressorSKU MAT-RVX-90-COMPRESSOR-0599

75 HP327 CFM

$87,226.40

MatteiMattei RVX 90i CompressorSKU MAT-RVX-90I-COMPRESSOR-0607

75 HP189 CFM

$107,628.00

MatteiMattei RVX 90iW CompressorSKU MAT-RVX-90IW-COMPRESSOR-0609

75 HP189 CFM

$112,020.00

MatteiMattei RVX 90iR CompressorSKU MAT-RVX-90IR-COMPRESSOR-0608

75 HP189 CFM

$112,910.40

MatteiMattei Optima 110 CompressorSKU 1100006662

150 HP353 CFM

$123,815.20

MatteiMattei Optima 132 CompressorSKU 1100006664

175 HP353 CFM

$142,954.40

MatteiMattei Optima 200 CompressorSKU MAT-OPTIMA-200-COMPRESSO-0627

150 HP353 CFM

$162,344.80

EL-AV ELFD100INV EL+ Series 100 HP Variable-Speed Rotary Screw Air Compressor

EL-AVEL-AV ELFD100INV EL+ Series 100 HP iPM Variable-Speed Rotary Screw Air Compressor (460V/3-Phase)SKU ELFD100INV

100 HP94 CFM

$49,860.00

EL-AV ELFD75INV EL+ Series 75 HP Variable-Speed Rotary Screw Air Compressor

EL-AVEL-AV ELFD75INV EL+ Series 75 HP iPM Variable-Speed Rotary Screw Air Compressor (460V/3-Phase)SKU ELFD75INV

75 HP74 CFM

$43,020.00

EL-AV ELCD50INV EL+ Series 50 HP rotary screw air compressor

EL-AVEL-AV ELCD50INV EL+ Series 50 HP iPM Variable-Speed Rotary Screw Air Compressor (460V/3-Phase)SKU ELCD50INV

50 HP45 CFM

$29,520.00

EL-AV ELBD30INV EL+ Series 30 HP rotary screw air compressor (30-50 HP cabinet)

EL-AVEL-AV ELBD30INV EL+ Series 30 HP iPM Variable-Speed Rotary Screw Air Compressor (460V/3-Phase)SKU ELBD30INV

30 HP26 CFM

$22,410.00

EL-AV ELBD20INV EL+ Series 20 HP rotary screw air compressor

EL-AVEL-AV ELBD20INV EL+ Series 20 HP iPM Variable-Speed Rotary Screw Air Compressor (460V/3-Phase)SKU ELBD20INV

20 HP16 CFM

$16,920.00

EL-AV ELAD15INV EL+ Series 15 HP rotary screw air compressor

EL-AVEL-AV ELAD15INV EL+ Series 15 HP iPM Variable-Speed Rotary Screw Air Compressor (460V/3-Phase)SKU ELAD15INV

15 HP11 CFM

$15,480.00

Sale

SchulzSchulz SCR 4005 Oil-Less Scroll Air Compressor (5 HP, 12.5 CFM)SKU 970.4033-0

5 HP13.3 CFM

~~$18,651.00~~$16,218.00

Sale

SchulzSchulz 224VL10X-1 2 HP Practic Piston Air CompressorSKU 931.8273-0

2 HP5 CFM24 gallon, vertical

~~$1,642.00~~$1,428.00

Schulz 220HL10X-1 Practic Portable Compressor

Sale

SchulzSchulz 220HL10X-1 2 HP Practic Piston Air CompressorSKU 931.8263-0

2 HP5 CFM20 gallon, horizontal

~~$1,573.00~~$1,368.00

Sale

SchulzSchulz 360VL18X-1 3 HP Heavy-Duty Piston Air CompressorSKU 932.3438-0

3 HP13.7 CFM60 gallon ASME, vertical

~~$2,007.00~~$1,745.00