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Twin-Stack P1IU-A9 2 HP 4 Gallon Portable Air Compressor

4.3 4.3 out of 5 stars 180 ratings

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Purchase options and add-ons

Brand Ingersoll-Rand
Voltage 120 Volts
Power Source electric-powered
Noise Level 80 dB

About this item

  • Portable Design: Lightweight, ergonomic design for easy handling, ideal for DIYers or professionals
  • User Friendly: Easy to operate front panel and a low 79 dBA noise level provides a superior user experience
  • Maximum Power and Flexibilty: 100% continuous duty, two quick disconnect couplers enable you to run multiple tools simultaneously
  • Reliable Operation: All Season Select synthetic lubricant increases efficiency; with 2,000 hours of service between changeouts, it performs four times longer than petroleum-based lubricants
  • Long-Life: Durable cast iron cylinder, protective back shroud, enclosed frame and extended pump life provide excellent longevity
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Customer ratings by feature

Value for money
5.0 5.0
Accuracy
5.0 5.0
Light weight
2.8 2.8

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$449.99
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$21.99 ($1.30/Fl Oz)
Get it as soon as Wednesday, Apr 3
Available to ship in 1-2 days
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$40.38 ($1.19/Fl Oz)
Get it as soon as Tuesday, Apr 2
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From the manufacturer

IR; Ingersoll Rand; IR Compressor; reliability; quality; optimum performance; air compressor; safe
IR air compressor; twin stack; twinstack; garage compressor; electric; portable compressor

P1IU-A9 2hp 4 gal Single-Stage Compressor (120/1)

42672949

Combining portability and power, the Ingersoll Rand Twin-Stack P1IU-A9 2 HP 4 Gallon Portable Air Compressor offers ideal versatility for contractors and avid do-it-yourselfers. Great for a variety of tasks from interior trim and finish to roofing and decking, this 4-gallon twin tank air compressor delivers up to 135 psi maximum operating pressure.

At a Glance:

  • Portable design allows the compressor to be carried anywhere
  • 2 horsepower compressor delivers up to 135 psi of maximum operating pressure
  • Single-stage design with quiet belt drive operation
  • Durably designed with protective back shroud and enclosed frame
  • Easy to read front panel with pressure gauges and regulator switch

P1IU-A9 2hp 4 gal Single-Stage Compressor (120/1)

IR air compressor; twin stack; twinstack; garage compressor; electric; portable compressor

IR air compressor; twin stack; twinstack; garage compressor; electric; portable compressor

IR air compressor; twin stack; twinstack; garage compressor; electric; portable compressor

Portable Design Offers Ideal Versatility

The Ingersoll Rand Twin-Stack P1IU-A9 2 HP 4 Gallon Portable Air Compressor features a compact, ergonomic design that can be taken along easily for any application. Unlike larger air compressors that can be exceptionally heavy, the P1IU-A9 weighs just 77 pounds, so it can be carried up on roofs and moved easily on jobsites to ensure every job gets done efficiently.

Exceptional Power in a Compact Frame

The Ingersoll Rand Twin-Stack P1IU-A9 2 HP 4 Gallon Portable Air Compressor delivers up to 135 psi of maximum operating pressure to do the job right, in less time. Featuring twin 4-gallon tanks, this 2 horsepower, oil-lube single-stage compressor delivers 100 percent continuous duty operation for trouble-free performance in the most demanding conditions. The compressor tank fills from zero to full pressure in just 60 seconds, so you can get to work immediately, while the belt-driven design offers quiet operation. Two quarter-inch quick disconnect couplers allow up to two tools to be run simultaneously for added efficiency.

Easy and Safe Operation

The P1IU-A9 hand carry air compressor features a front panel that is easy to see and use, as well as tank pressure and discharge pressure gauges and an external pressure regulator dial. A protective back shroud and enclosed frame offer exceptional durability, allowing the air compressor to be used safely and reliably in any environment. A cast iron cylinder and oil-lubricated design help ensure long-lasting use.

About Ingersoll Rand

Ingersoll Rand has stood at the vanguard of industrial innovation for over 100 years. From air compressor systems to power tools and beyond, the company manufactures products that offer best-in-class quality, reliability, durability, and performance. Ingersoll Rand is also deeply committed to building a better future. At every level of business, the company promotes environmentally sound practices to achieve progress that is truly sustainable. With offices and plants across the globe, Ingersoll Rand strives to meet the world’s growing need for clean and comfortable air, safe and fresh food, energy efficiency, and sustainability.

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Warranty & Support

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Twin-Stack P1IU-A9 2 HP 4 Gallon Portable Air Compressor


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Product guides and documents

Product Description

Product Description

The Ingersoll Rand oil-lubricated Twin-Stack reciprocating air compressor is designed to provide power, durability and portability on the job site or for DIY projects. From interior trim and finish to roofing and decking, the Twin-Stack can do the job. Built to last, the compressor features a durable cast-iron cylinder designed for the toughest 100% continuous-duty applications. The Twin-Stack compressor package comes standard with two 1/4-inch universal couplers, front panel-mounted regulator and pressure gauge, 4-gallon twin tanks, All Season Select lubricant and a power cord.

From the Manufacturer

Ingersoll Rand 2 HP Hand Carry Twinstack Compressor.

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Price-6% $449.99
List:$479.99
$139.99-27% $159.99
List:$217.99
-8% $169.99
List:$184.00
-27% $157.28
List:$213.99
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Wednesday, Apr 3
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Light weight
2.8
4.1
4.0
4.4
4.4
Value for money
5.0
3.8
4.0
4.7
Noise level
4.6
4.1
3.7
4.1
Portability
4.6
4.3
4.5
4.6
Maneuverability
4.5
4.1
4.5
4.4
Sold By
Amazon.com
Limodot
Amazon.com
Amazon.com
Amazon.com
capacity
4 gallons
1 gallons
24 liters
6 gallons
1 gallons
power source
electric-powered
Corded Electric
Corded Electric
Corded Electric
Electric
air flow capacity
4.3 cubic feet per minute
2.4 cubic feet per minute
2.6 cubic feet per minute
0.75 cubic feet per minute
voltage
120 volts
115 volts of alternating current
120 volts
0 volts
maximum power
2 horsepower
1 horsepower
2 horsepower
0.2 horsepower
motor horsepower
2
1
2

Important information

Wattage

120 watts

Bulb Voltage

120 volts

Customer reviews

4.3 out of 5 stars
4.3 out of 5
180 global ratings

Customers say

Customers like the quality, performance, noise and speed of the air compressor. For example, they mention it's well made, works great and is extremely quiet. Some appreciate the value, and size of the product. That said, opinions are mixed on weight.

AI-generated from the text of customer reviews

52 customers mention42 positive10 negative

Customers like the quality of the air compressor. They say it's well made, reliable, and built for long-term use. They also mention that the tank is braided steel and the frame is heavy duty. Customers are pleased with their purchase, saying that it arrived in perfect condition.

"...The box was well intact its a super heavy duty cardboard box with packing straps and a glossy outside finish, its the original box from Ingersoll..." Read more

"...leading from compressor to tank (not visible in pictures), quality brass fittings and copper lines. All plumbing seemed to be properly assembled...." Read more

"Seems like a well built unit. They should have an installed sight glass for oil level instead of a dip stick...." Read more

"...nice brass, the hose between the tanks is braided steel, the frame is heavy duty and painted nicely, even the plastic output knob is fine...." Read more

30 customers mention25 positive5 negative

Customers like the performance of the air compressor. They say it works great right out of the box, has two tanks for plenty of air on small jobs, and starts first try. Some say that the compressor has performed flawlessly. Overall, most are satisfied with the performance and functionality of the product.

"...a long time (at least 4 hrs) I couldn't wait wanted to use it, It all works great...." Read more

"...No issues. I plug it into 15-amp outlets with no problems. I definitely recommend this compressor." Read more

"...Good recept, good breaker, 75f, but nothing doing. Call to IR and on phone diagnosis was bad limit switch...." Read more

"Works great. I've had this several years now. It does the job well. I'll just share a few observations from several years of use...." Read more

25 customers mention19 positive6 negative

Customers like the noise of the air compressor. For example, they say it's extremely quiet, emitting two primary tones, and has low vibrations.

"...up of this but, it is a direct drive to the pump and it sounds like a very loud refrigerator...." Read more

"...I also noticed it had low vibration. Previous compressor vibrated quite violently...." Read more

"...It is much quieter than the little Craftsman it is replacing, which after about 15-18 months of use, just airing up tires, suddenly started..." Read more

"...The negatives are that it is loud (all small compressors are). And it vibrates (all small compressors do)...." Read more

17 customers mention17 positive0 negative

Customers find the air compressor to be fast. They mention that the pump up time is minimal, the tank fills quickly, and consistently. They also say that it builds air quickly, charges up fast, and provides plenty of air for stapling and nailing.

"...It does fill fast and does not take long to recover when using my 1/2 impact. It's over kill but I did replace all my fittings with Milton V style...." Read more

"...Previous compressor vibrated quite violently.Tank fills quickly and consistently and comes with a brass ball-valve drain...." Read more

"...It fills up in just a few minutes to around 110 psi. I usually set the output at 95 psi for the nailers and they work great...." Read more

"...10 dB less then my fathers old hot dog craftsman but with much better performance...." Read more

10 customers mention7 positive3 negative

Customers like the size of the air compressor. They say it's small enough that they can move it around, has plenty of power, and is a work horse for its size. Some customers also mention that the fit and finish is nice.

"...This one is great for a small compressor. I used it to build a 12x18 shed in the spring of 2013...." Read more

"...Compact, well-built unit.b) Fittings are good quality...." Read more

"...it is powerful enough for my needs, and it has a relatively small footprint...." Read more

"...Gauges, as many have said, are poor. They are hard to read (small print). I had to get down on my hands and knees to read the pressure...." Read more

10 customers mention10 positive0 negative

Customers like the value of the air compressor. They say it's worth the money, a great buy, and the best investment for onboard air. Some mention that it'll be a little heavy to lug around.

"...I am a value hound and this is one of the best values I have run across in a long time. Built like a tank...." Read more

"Usa made compact quiet high volume compressor!!! Best investment for onboard air for my welder trailer...Machine is mounted in a 24x24x24 UWS box..." Read more

"...Good price. It cycles back on at high pressure so I never have those last few nails not set right. Has 1/4 turn ball valve tank drain...." Read more

"...the heaviest "portable" compressor that I have found, but well worth the extra effort to lug around...." Read more

35 customers mention12 positive23 negative

Customers are mixed about the weight of the air compressor. Some mention that it's the heaviest portable compressor they have found, yet it has plenty of power. That said, some say it'll be easy to carry with its compact design. That being said, others say it is a bit heavy for a portable compressor and awkward to lift and move about.

"...She is quite heavy but not to the point that it is not portable. I will probably dedicate a dolly or cart to facilitate rolling it around...." Read more

"...It is heavy but that is fine for me, the carry handle well position for carrying...." Read more

"...bits are tucked away, it doesn't balance all that well and seems unwieldy at best...." Read more

"...It is a small compressor (still quite heavy/awkward to lift anD move about)..." Read more

15 customers mention0 positive15 negative

Customers are dissatisfied with the damage to the air compressor. They mention that the safety relief valve was broken, the tank gauges were broken, and the case had a huge crack. The box was battered when they received the compressor, and within a week the air inlet filter broke off.

"...Oh, and the dip stick broke. Go figure." Read more

"...The box was battered when I received the compressor, but nothing was broken...." Read more

"...He said the new valve plate was defective. He took the compressor with him and they sent me a new one. Moral of the story, buyer beware...." Read more

"...tank wasn't building the required pressure (135psi), and the tank gauge was faulty. Who knows what the story is with the output gauge...." Read more

Best small compressor you can buy.
5 Stars
Best small compressor you can buy.
Love this thing. It's the perfect size and IR is a super cool company to deal with upon arrival my tank gauges were broken and I got on the phone with IR and I had new ones the next day. It's quiet and powerful and not to heavy use it for automotive and construction. You want an oiled compressor if you use it for anything more than inflating the occasional tire.
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Laura Jaime
5.0 out of 5 stars Muy buen compresor
Reviewed in Mexico on October 26, 2021
Style: Compressor OnlyVerified Purchase