Harbor Freight Tools


21 gallon 175 PSI Oil-Free Vertical Air Compressor

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Oil free vertical air compressor ideal for intermittent air tool use, painting, nailing/stapling, and blow guns

Was $299.99
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This 175 PSI vertical air compressor delivers plenty of air yet has an oil-free pump for less maintenance. The powerful 1.5 running HP universal motor with thermal overload protection is up to 25% quieter than other compressors in its class. The wrap-around handle and console cover protect the pump, motor and gauges. A forward facing drain valve provides fast, thorough tank draining.

  • Oil-free pump for no-maintenance operation
  • Up to 143% more runtime*
  • Up to 25% quieter **
  • 5% more tank size
  • 4.0 SCFM @ 90 PSI for quick recovery and cycle time
  • Powerful 1.5 running HP universal motor with thermal overload protection
  • Large rubber wheels and ergonomic handle for smooth portability
  • Rubber foot stabilizers for reduced vibration
  • Conveniently located forward facing drain valve for fast, thorough tank draining
  • Regulated pressure range: 0-155 PSI (+/- 5)

Replacement Parts in Stock

Call to Order: 1-800-444-3353

View Available Parts

Important Information

  • Oversized item: cannot be shipped to Alaska or Hawaii. *Compared to 150 PSI compressors. **Compared to compressors in its class.
  • An additional lift-gate charge may apply.

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Flow rate
4.0 SCFM @ 90 PSI
21 gallon
AC Volts
Amperage (amps)
Horsepower (hp)
Maximum pressure (PSI)
175 PSI
Product Height
45.5 in.
Product Length
18.5 in.
Product Weight
88.3 lb.
Product Width
17.75 in.
Shipping Weight
100.53 lb.
Sound rating (dB)
77 dBA
Pump-Up Time
457 seconds (0-135 PSI), 118 sec (cut-in to cut-out)
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.