Home Gallon Best 120 Gallon Air Compressors Buying Guide

Best 120 Gallon Air Compressors Buying Guide

When it comes to industrial applications or bigger machines, even the most powerful DIY 60-gallon compressor will fail. You need something more powerful on your side. Luckily, 120-gallon air compressors have the perfect capacity to support all your pneumatic needs. These compressors provide enough air to power not just one but two tools at a time. The key to finding the best compressor based on size is to ensure that your requirements are being fulfilled by the available capacity.

To help you in your quest, we have compiled a list of the top 120-gallon air compressors with the highest ratings.

5 Best 120 Gallon Air Compressors

  • 5 Customer Rating
  • DXCMH9919910
  • Brand: DeWalt
  • Product Dimensions: 28.5 x 74 x 56.5 inches
  • Weight: 900 pounds
  • Batteries Required? No
  • Warranty: Manufacturers
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  • 2545E10V-FP
  • Brand: Ingersoll-Rand
  • Product Dimensions: N/A
  • Weight: N/A
  • Batteries Required? No
  • Warranty: Manufacturers
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  • IH9929910
  • Brand: Industrial Air
  • Product Dimensions: 28.5 x 74 x 56.5 inches
  • Weight: 896 pounds
  • Batteries Required? No
  • Warranty: Manufacturers
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  • 26104
  • Brand: OEMTOOLS
  • Product Dimensions: 73 x 24 x 49 inches
  • Weight: 830 pounds
  • Batteries Required? No
  • Warranty: Manufacturers
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  • 2020014205
  • Brand: Quincy Compressor
  • Product Dimensions: N/A
  • Weight: N/A
  • Batteries Required? No
  • Warranty: Manufacturers

DeWalt Two-Stage DXCMH9919910 Industrial Air Compressor

The Dewaltcast iron two-stage air compressor is a uniquely designed compressor with a large capacity to help handle larger loads and heavier pneumatic tools. The 120-gallon capacity is further supported by the two-stage function, which ensures more air can be compressed. The Dewalt 120-gallon air compressor comes with a mounted magnetic and pre-wired starter. This makes it easier and quicker to start up the air compressor.

The compressor provides 33.6 CFM at 175 PSI. This makes it ideal for applications that involve a longer run time for all kinds of air tools. The patented pump design ensures a cooler running pump, which adds to the durability of the system. Speaking of durability, did we mention that the compressor is constructed from cast iron? This ensures a durable and long lasting unit.

The compressor works on a heavy-duty three-phase induction motor that features a running horsepower of about 10. Also included is a uniquely designed belt guard that ensures better cooling of the compressor pump.

Furthermore, the patented pump design makes for more efficient cooling as does the cast iron flywheel. This means the machine will maintain a consistent compressing efficiency throughout its life without over-heating. Not only is the two-stage function powerful, but it also helps operate more than one device at a time.


  1. Two-stage pump for more power.
  2. More than one devices can be used at once.
  3. Easier and quicker to start up the machine.
  4. Durable and sturdy design.
  5. Heavy-duty


  1. Heavyweight at 900 pounds.
  2. Not very portable.

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Ingersoll-Rand 120-Gallon 2545E10V-FP Horizontal Air Compressor

If you thought the Dewalt 120-gallon air compressor was a bit too heavy for you, then perhaps the Ingersoll Ran 120-gallon air compressor will suit your fancy. Whereas the Dewalt delivered a mere 10 HP, the Ingersoll delivers a total of 20 HP. It does so by using two 10-HP motors, which are mounted on the same tank as the pumps. This allows an automatic alternation between the pumps and motor so the wear is even.

The Ingersoll is perhaps the best 120-gallon air compressor for situations that do not allow you to use a larger, single unit. It features a continuous duty cycle so that your machines never stop working.

Also included is a seamless connecting rod, which makes maintaining and servicing the device much easier. The 120-gallon tank is perfect for applications that require large capacity air pressure. The two-stage design further ensures that air is compressed to the maximum capacity. The unit has a maximum operating pressure of 175 PSI.

What’s more, you don’t even need to buy a separate starter. The starter comes already mounted on the motor.


  1. Comes equipped with a starter.
  2. Large tank capacity of 120 gallons.
  3. Delivers a high power of 20 HP using two motors.
  4. Automatic start/stop control makes it easier to use.
  5. Made of durable cast iron.
  6. Relatively lightweight at 430 pounds.


  1. Very loud operation.
  2. Not suitable for domestic uses.

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Industrial Air 10 HP Two Stage IH9929910Air Compressor

The Industrial Air 10-HPair compressor is the best 120-gallon air compressor in terms of the durability and reliability. The patented pump design is really unique with this unit. It allows the pumps to run cooler and helps to compress air more efficiently. The design is also excellent in terms of durability.

As well as the pump design, the piston design is original and patented to provide improved compression efficiency. The tool is best used for industrial applications where it can deliver maximum efficiency at 175 PSI. This means the unit will have sufficient power to operate more than one pneumatic tool at a time.

The compressor is equipped with a 10-HP motor that includes a mounted starter so you get to use the compressor swiftly and easily. What’s more, the metal belt guard and the asymmetrical cooling fins ensure efficient cooling of the compressor by up to 60 degrees F.

In addition, Industrial Air offers a two-year limited factory warranty in case you face any defects. All in all, the Industrial Air 120-gallon air compressor is bound to help you operate all tools efficiently and will last longer than any other compressor on the market.


  1. Improved compression efficiency due to patented pump and piston design.
  2. Stays 60% cooler than other compressors.
  3. Easy and quick to use due to the mounted
  4. Best suited for industrial applications.
  5. Two-year warranty included.


  1. Tends to be very loud.
  2. Very heavy and hard to carry.

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OEMTOOLS 10HP 120 Gallon 26104  230V Three Phase Air Compressor

When it comes to reliability and delivering high-end products, OEM TOOLS is unbeatable. Its120-gallon industrial air compressor is yet another example of the company’s consistency. The horizontal compressor is huge and bulky in size. However, it can still be used for DIY purposes when you need extra power for your tools.

The maximum operating pressure of this unit is about 125 PSI while it can easily deliver 35 CFM at 100 PSI. This means you can use it to provide air to power ratchets, grinders, drills, or whatever tools you need. The heavy-duty cast iron pump is perfect for performance and durability. It operates at a low RPM, which further adds to the durability factor.

Another bonus: you don’t need to buy a separate starter for the motor on this unit because the starter, as well as the oil and air filters, are included. Furthermore, the compressor does not require a lot of maintenance or servicing. In fact, it effectively reduces maintenance and ensures longevity. The heavy belt flow guard ensures optimal cooling efficiency. The unit also includes tank and safety valves that hold the ASME standards.


  1. AMSE Standard tank valves and safety valves.
  2. Starter and start-up kit included with the package.
  3. Can be used for both DIY and industrial uses.
  4. Used to power many different kinds oftools.
  5. Durable and reliable performance.


  1. Vibrates a lot so vibration isolation pads are needed.
  2. Cannot be moved without assistance.

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Quincy Splash Lubricated Reciprocating QT 10 Air Compressor

The 10-HP Quincy air compressor is a unique reciprocating air compressor that compromises neither on the pressure nor on the power. The best part about this compressor is that it is low maintenance and does not require continuous servicing. Furthermore, it can be used continuously for longer times without interrupting the flow of compressed air.

It is specifically built for efficiency and can produce more compressed air with less power. It’s equipped with a heavy-duty industrial motor that delivers 10 HP to the system. This is why the Quincy compressor is best suited for industrial applications. It boasts a long pump life — up to 50,000 hours. The pump RPM is at 968 while the compressor works under pressures of 145–175 PSI.

Moreover, it includes a mounted and wired magnetic starter,which makes turning on the compressor much easier. What’s more, the compressor has less than 5 PPM of oil carry-over. This means that the unit will last longer than you expect it to. For better cooling efficiency, a finned intercooler, as well as a two-stage belt drive, are included for longer valve life. The aluminum head at the top allows for better heat dissipation for maximum cooling efficiency.


  1. Easy and quick to start.
  2. Dissipates heat and ensures maximum cooling efficiency.
  3. Can be used for a long time since it has a 100% duty cycle.
  4. Requires low maintenance.
  5. Less than 5 PPM of oil carry-over.


  1. Delivers lesser power.
  2. Expensive to repair once broken.

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How to Choose a 120-Gallon Air Compressor?

When it comes to choosing a 120-gallon air compressor, follow this guide to ensure the model meets all your requirements.

Airflow and Pressure

The first thing you should note is the volume of air flow and the maximum operating pressure. This is usually indicated by the unit’s SCFM, which means standard cubic feet per minute. Pressure usually tends to go down as the SCFM goes up. You need to consider the type of tools you will be using with the compressor to determine the correct SCFM and PSI.


The motor power is usually expressed in horsepower (HP). Since these compressors are bound to have large tanks, we recommend you don’t go anywhere below 10 HP. Plus, 10 HP produces greater pressure as well as greater compression. However, the power should only be considered after the SCFM and PSI are determined.


Since these large tank air compressors are bound to be expensive, you need something that is durable and sturdy. Cast iron compressors are heavy duty and can usually tolerate the worst and will not easily corrode.


You don’t want to be stuck with servicing such a complicated and huge machine everyday. Hence, you should stick to one that is easier to maintain or does not require much maintenance like the rotating screw compressors.

Cooling Systems

Since these large compressors often face heavy loads, they can heat up quite easily. So, be sure to check for a cooling system and how efficient it is. Most compressors are equipped with fans or aluminum heads for better heat dissipation.


All in all, 120-gallon air compressors are best suited for industrial applications where the tools require a higher rating compressor. These compressors are all durable, reliable and efficient. Each of these compressors can be used continuously without any interruptions — an attractive feature for industrial users as they do not want to shut down their operations too often.

Apart from that, they can also be used for DIY tools such as nail guns and can run two of these tools at the same time. Durability and reliability are what make these compressors so popular!