Quick take
Choosing an industrial air compressor usually starts with one question: where and how will it run? This group puts a gas-powered portable unit next to three 230V three-phase rotary screw compressors, with listed prices stretching from $2,699 to $6,599. The rotary screw models are built for steady, continuous shop air, while the gas AllMetal is the only one that can run away from the electrical grid.
The real tension is between raw portability and production output. The gas unit offers high pressure in a portable tank, but its flow rate is lower than the rotary screw units. The rotary screw lineup includes a fixed-speed model, a commercial version, and a variable-speed 15HP unit at the top of the range.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| AllMetal 40 Gal 9HP Gas Air Compressor 175 PSI 302cc OHV Portable Industrial | USD 2,699.00 | |
| 3 Phase 10HP Rotary Screw Air Compressor 34 CFM 125 PSI 230V Industrial Grade | USD 3,099.00 | |
| 34CFM Rotary Screw Air Compressor - 125 PSI, 10 HP, 230V Commercial Use | USD 3,199.00 | |
| Rotary Screw Air Compressor 15HP 30CFM @ 125PSI 3 Phase Industrial VSD 208-240V | USD 6,599.00 |
Decision matrix
| If your priority is... | Pick... | Why... |
|---|---|---|
| Continuous shop air | 3 Phase 10HP Rotary Screw | 10 HP motor and a lower price than the commercial version |
| Shifting air demand | 15HP VSD Rotary Screw | VSD adjusts motor speed to air demand |
| Remote or outdoor use | AllMetal 40 Gal Gas Compressor | 9HP gas engine and portable design |
| Compact commercial enclosure | Chery Industrial rotary screw | Space-saving layout with a 10HP motor |
Product notes
AllMetal 40 Gal 9HP Gas Air Compressor 175 PSI 302cc OHV Portable Industrial
At the lowest listed price in this comparison, the AllMetal pairs a 9HP Loncin 4-stroke gas engine with a 40-gallon ASME-certified steel tank. It is built for worksites, farms, and outdoor locations where there is no access to grid electricity, and it produces 175 PSI with a flow range of 14.5-20.6 CFM. That flow range supports impact wrenches, spray guns, nailers, and sandblasters, but it is a step below the output of the rotary screw compressors. The limitation is that this is more of an intermittent-tool machine than a high-volume production air source. If the job moves around and you need a compressor that runs without plugging into a wall, this unit gives you the most flexibility.
3 Phase 10HP Rotary Screw Air Compressor 34 CFM 125 PSI 230V Industrial Grade
This rotary screw model sits below the commercial version in price while offering the same headline output: 34 CFM at 125 PSI from a 10HP motor. The description calls it a fixed-speed compressor with a star-delta starter, a user-friendly controller, and an oil-air separator, which makes it a very plan-friendly package for a shop that already runs 230V three-phase. It also spells out the host motor speed of 3500 r/min and a 3/4 NPT pipe diameter, so you know exactly what you are connecting. The limitation is the fixed-speed operation: if your air demand swings, this unit will not adjust its output the way a VSD model would. For steady production schedules, it is the more direct option between the two 34 CFM choices.
34CFM Rotary Screw Air Compressor - 125 PSI, 10 HP, 230V Commercial Use
The Chery Industrial compressor is priced slightly higher than the comparable 10HP rotary screw unit but keeps the same 34 CFM and 125 PSI operating points. It uses a 7.5 kW motor with a star-delta starter and is described as compact, operator-friendly, and relatively low-noise, with discharge temperature control designed to extend service life. That makes it a comfortable fit for a commercial workshop that wants a self-contained enclosure and stable continuous air. The trade-off is that you are paying a small amount more for the same airflow and pressure as the cheaper rotary screw model, so the decision comes down to whether the enclosure layout and controller presentation matter enough to justify the price difference.
Rotary Screw Air Compressor 15HP 30CFM @ 125PSI 3 Phase Industrial VSD 208-240V
Priced at the top of this lineup, the 15HP VSD rotary screw compressor is the only unit here with variable-speed drive. The description highlights VSD technology that automatically adjusts motor speed based on air demand, which can reduce power consumption and extend equipment life. It also comes with UL and ASME certifications and an integrated spin-on oil-air separator for simpler maintenance. The compressor runs on 208-240V three-phase and is aimed at pneumatic tools, woodworking, furniture, and auto repair shops. The limitation is the price gap to the other three units; you need substantial or fluctuating air usage for the VSD advantage to pay off. If your shop has changing demand, this is the one to evaluate first.
Final recommendation by use case
For a fixed-speed 34 CFM shop compressor, the 3 Phase 10HP Rotary Screw is the lower-priced way to get that output compared with the commercial version. For remote or outdoor jobs without grid power, pick the AllMetal 40 Gal gas compressor. For automatic output control and 15HP power, the 15HP rotary screw model is worth serious attention, especially if UL and ASME certifications matter to you. For a compact commercial package, take a close look at the Chery Industrial 34CFM unit if its layout fits your workspace.
