If you’re seeking a blend of mobility and performance, a 20-gallon air compressor fits the bill perfectly. These compressors stand out as the preferred choice among midsize options, catering to a wide range of users. Specifically crafted for occasional and low-load air tools, they are ideal for homeowners, small-scale projects, and DIY enthusiasts alike.
Whether you’re tackling household repairs or working on creative projects, a 20-gallon air compressor offers the versatility and reliability you need to get the job done efficiently.
Just like any other tool, you have to consider certain factors to purchase the best 20-gallon air compressors. Some of them are mentioned below…
- Maximum Air Pressure: This indicates the maximum air pressure that the air tank can hold. For most users, any value exceeding 120 PSI is more than sufficient.
- Motor Power: All air compressors employ an electric motor to compress and store air in the tank. Due to the sizable tank and the need for high air pressure, this process can be time-consuming. Opting for a higher motor rating ensures more efficient results. Single-stage compressors typically range from 1 to 5 HP, while two-stage compressors span from 1 to 14 HP.
- CFM Rating: The CFM rating informs you about the volume of air delivered by the compressor, measured in Cubic Feet per Minute. This metric is particularly useful for various applications. A CFM rating of 5 or higher is deemed excellent for 20-gallon air compressors, ensuring ample airflow for various tools and tasks.
Explore additional considerations for selecting a 20-gallon air compressor in our comprehensive “Buying Guide” Drawing from these considerations, we’ve identified the leading contenders.
Best 20-Gallon Air Compressors: Table
| 20 Gallon Air Compressors | Maximum Pressure | Motor Power | Buy Now |
|---|---|---|---|
| Stealth 20-Gallon Air Compressor | 150 PSI | 1.8 HP | Check On Amazon |
| Craftsman 20-Gallon Air Compressor | 175 PSI | 1.8 HP | Check On Amazon |
| Porter Portable 20-Gallon Air Compressor | 150 PSI | 1.5 HP | Check On Amazon |
| California 20-Gallon Air Compressor | 90 PSI | 2. 0 HP | Check On Amazon |
| Ingersoll 20-Gallon Air Compressor | 135 psi | 2 HP | Check On Amazon |
| Industrial 20-Gallon Belt Driven Air Compressor | 135 PSI | 1 HP | Check On Amazon |
| NorthStar20-Gallon Air Compressor | 135 PSI | 2 HP | Check On Amazon |
| EMAX 20-Gallon Air Compressor | 125 PSI | 2 HP | Check On Amazon |
| Campbell 20-Gallon Air Compressor | 90 PSI | 2 HP | Check On Amazon |
Best 20-Gallon Air Compressor Reviews
1. Stealth 20-gallon Air Compressor
The Stealth Compressor is highly efficient, quiet, and runs on a robust 1.8 horsepower motor. It operates at a noise level of just 68 decibels, making it ideal for creating a calm work setting.
This compressor stands out with its quick recovery time, reaching a peak pressure of 150 PSI. It’s perfect for various tasks like drilling, bolting, cutting, or inflating tires. The sturdy Q235B steel tank body adds stability, and the 8-inch rubber-reinforced wheels make it easy to move with a long life cycle of over 1000 hours. It’s a dependable partner for any project, offering power, efficiency, and durability.
Best Features:
- Powerful 1.8 HP induction motor.
- Ultra-quiet operation at 68 dB.
- Quick recovery with peak 150 PSI.
- Stable heavy-duty Q235B steel tank body.
- Mobile with 8-inch rubber-reinforced wheels.
- Cold weather and low voltage start capability.
2. Craftsman 20-gallon Oil-Free Air Compressor
Craftsman Air Compressor is a dependable and effective solution crafted for effortless handling of diverse tasks. With a spacious 20-gallon tank and a maximum pressure of 175 PSI, this compressor guarantees prolonged tool operation for a wide range of industrial and household uses.
The robust 1.8 HP motor, generating 4 SCFM at 90 psi, ensures swift compressor recovery, making it capable of effortlessly powering various tools such as drills, wrenches, paint sprayers, and nailers.
Best Features:
- 20-gallon ultra-large tank for extended tool run times
- Powerful 1.8 HP motor for quick compressor recovery
- Max 175 PSI pressure for versatile tool compatibility
- Sturdy stainless steel construction with rubber feet for durability
- Two quick couplers for convenient tool connections
3. Porter Cable 20-Gallon Portable Air Compressor
The PORTER-CABLE 20-Gallon Portable Air Compressor offers a flexible solution, blending reliable performance with effortless portability. With a 5.0 CFM at 40 psi and 4.0 CFM at 90 psi, driven by a sturdy 1.5-HP motor, it caters to a range of tasks like drilling, air brushing, spraying, and nailing.
Its sizable 20-gallon tank guarantees ample air reserve, while the maintenance-free, oil-free motor minimizes the need for frequent inspections and oil replacements.
Best Features:
- 5.0 CFM at 40 psi and 4.0 CFM at 90 psi for versatile tool compatibility
- Heavy-duty 1.5-HP motor for reliable performance
- 20-gallon tank capacity for extended tool runtime
- Oil-free motor for low maintenance operation
- Portable design with semi-pneumatic wheels for easy transportation
4. California 20-Gallon Air Compressor
This air compressor from California is best known for its quiet operation and strong performance. It runs at just 70 decibels, creating a peaceful work environment, and boasts a powerful 2.0 HP motor operating at 1680 RPM.
With an oil-free pump, it reduces maintenance costs and improves durability. Its dual-piston system ensures high performance with a life cycle exceeding 3000 hours. The 20-gallon steel tank offers ample air storage, ideal for demanding tools like spray guns and sanders. This compressor includes an easy start valve for smooth startups, even in cold weather.
Best Features:
- ltra-quiet operation at 70 decibels
- Powerful 2.0 HP motor for consistent performance
- Oil-free pump for low maintenance and durability
- Large 20-gallon steel tank with wheels for portability
- Easy start valve for smooth startups
- A long life cycle of over 3000 hours
- Suitable for a wide range of applications
5. Ingersoll Air Compressor
We were impressed by the compact, wheeled design of Ingersoll’s 2 HP 20-gallon compressor. This compressor, highly favored by both DIY enthusiasts and professionals, boasts a powerful 2 horsepower motor and can reach a maximum operating pressure of 135 psi, providing a steady and dependable air supply for a variety of air-powered tools, from impact guns to drills.
Constructed from robust cast iron, this compressor ensures durability, while its oil-lubricated belt-driven mechanism ensures smooth and quiet operation, registering at only 80 dB. Moreover, it comes equipped with manual thermal overload motor protection and a fully enclosed belt guard, adding an extra layer of safety during operation.
Best Features:
- Easy-to-transport wheeled design
- 2 horsepower motor with a maximum pressure of 135 psi
- Robust cast iron construction for durability
- Oil-lube belt-driven design for quiet operation
- Semi-pneumatic tires and ergonomic handle for effortless mobility
6. Industrial 20-Gallon Belt Driven Air Compressor
The Industrial Air 20-Gallon Belt Driven Air Compressor stands out as a dependable workhorse engineered for optimal functionality and convenient portability. Equipped with a 1.6 HP dual-voltage induction motor, this compressor is initially configured for standard 120-volt outlets, but can effortlessly adapt to 240-volt setups, offering adaptability across various worksites.
Boasting a maximum psi of 135, it delivers a substantial 6.2 CFM at 40 psi and 5.3 CFM at 90 psi, catering perfectly to rigorous tasks like drilling, airbrushing, spraying, and nailing.
Best Features:
- 1.6 HP dual-voltage induction motor for reliable power
- 135 max psi for versatile tool operation
- 6.2 CFM at 40 psi and 5.3 CFM at 90 PSI for efficient performance
- V-twin, cast-iron, oil-lubricated pump for durability
- Pneumatic tires for superior mobility
7. NorthStar Air Compressor
Ranked fifth among the top 20-gallon air compressors, NorthStar presents a robust option suitable for diverse tasks. Our testing revealed its remarkable blend of compactness and power, with commendable engineering evident throughout.
Featuring a 2 HP, 115V/230V dual-voltage induction motor, this compressor boasts a substantial output of 5.0 CFM at 90 PSI and 6.0 CFM at 40 PSI. The presence of a 2-cylinder cast iron single-stage pump not only ensures longevity but also facilitates efficient heat dissipation, thereby optimizing performance.
Best Features:
- 2 HP dual-voltage induction motor for robust power
- 5.0 CFM at 90 PSI and 6.0 CFM at 40 PSI for efficient operation
- 2-cylinder cast iron single-stage pump for durability
- Copper finned inter- and after-coolers for effective heat dissipation
- Ball bearings on each side of the crankshaft for smooth running
8. EMAX 20-Gallon Air Compressor
When it comes to choosing a product known for both performance and reliability, look no further than the EMAX Air Compressor. It’s designed for consistent performance, boasting a quiet 2 HP motor operating at just 66 dB. Made from tough heavy-gauge steel, it’s built to last with durable cylinders and valves. Its oil-free, dual-piston pump reduces maintenance needs and extends its lifespan. With a 20-gallon tank and maximum pressure of 125 PSI, it’s perfect for tasks like drilling, air brushing, and nailing. Plus, it’s portable and comes with a two-year warranty for peace of mind. Get powerful air output with less noise and cleaner air.
Best Features:
- Ultra-quiet operation at 66 dB
- Heavy-gauge steel cylinders, head, and valves for durability
- Oil-free, dual-piston, two-cylinder pump for low maintenance
- Portable design with a 20-gallon tank
- High air output power for faster recovery time
- Commercial-grade construction for jobsite durability
9. Campbell 20-Gallon Air Compressor
The Campbell Air Compressor features a motor that can operate on either 120V or 240V. Its durable cast iron, oil-lubricated two-cylinder pump can last up to 5000 hours. Designed for quiet operation, and a comfortable work environment without compromising performance. The ASME code tank enhances safety and durability, and its 20-gallon tank capacity. With semi-pneumatic wheels, it’s easy to move around, making it portable. Overall, the Campbell Hausfeld compressor delivers consistent and reliable performance.
Best Features:
- Dual-voltage motor (120V/240V)
- Heavy-duty cast iron pump for durability
- Oil-lubricated twin-cylinder pump for smooth operation
- Portable design with semi-pneumatic wheels
- Quiet operation for comfortable use
- ASME code tank for safety and durability
- A long life cycle of over 5000 hours.
How to Choose Best 20 Gallon Air Compressor?
To make an informed decision, it’s essential to consider key factors that can significantly impact performance and efficiency. In this guide, we’ll delve into the essential aspects to consider when choosing the best 20-gallon air compressor for your needs.
1. Types of Air Compressors
Air compressors come in two main types: single-stage and two-stage.
a. Single-Stage Air Compressors
Single-stage compressors operate with a single cylinder that directly pumps compressed air into the tank. These compressors typically have a compression ratio of 120 psi. They are well-suited for lighter tasks, simple applications, as well as activities like sawing and nailing. If your needs involve relatively straightforward work, a single-stage air compressor may be the practical choice.
b. Two-Stage Air Compressors
As the name suggests, two-stage air compressors are equipped with two cylinders, offering enhanced performance capabilities. In this design, air is initially compressed in the first cylinder before being transferred to a cooling tube. From there, it moves into the second cylinder for additional compression at 90 psi before finally reaching the tank at a maximum pressure of 175 psi. This design is ideal for applications that demand higher pressure levels.
2. Noise Level
Noise levels are measured in decibels (dB), and a lower rating indicates quieter operation. A good benchmark is to look for compressors with noise levels around 70 dB or less. Some premium models even boast noise levels as low as 60 dB. Investing in a quieter compressor not only contributes to a more comfortable working environment but also reduces the risk of hearing damage over prolonged use.
3. CFM Rating
All air compressors come with a CFM rating which is very essential to consider while analyzing the models. Cubic feet per minute (CFM) measures the airflow capacity of a compressor, a vital specification to match the requirements of your tools. For instance, a pneumatic tool like a framing nailer might need around 2-3 CFM at 90 PSI, while a paint sprayer could require 4-6 CFM.
Therefore, choose a compressor with a CFM rating that meets or exceeds the demands of your most air-hungry tools, guaranteeing consistent and efficient operation.
4. Maximum Air Pressure
The maximum air pressure, measured in pounds per square inch (PSI), is a critical determinant of an air compressor’s versatility. For most applications, a compressor with a PSI range between 125 and 150 is sufficient.
However, if you are working with higher-demanding tools like impact wrenches or sandblasters, consider a compressor with a PSI of 175 or more. This ensures compatibility with a broader range of pneumatic tools, making your compressor a versatile workhorse.
5. Motor Power
You should also check the motor power of the air compressor you are buying. A powerful motor in your air compressor makes it quite practical for many users. The motor of an air compressor is responsible for storing the air inside the air tank. But since the size of the air tank is quite large with high air pressure inside, this process can take a lot of time.
Based on how quickly you deplete the tank, having high motor power can be quite a bit of use. Keep in mind that air compressor that has higher motor power is capable of filling then tank much quicker than others. However, it can get hotter as well. Single stage compressors come with 1 to 5 HP while two stage compressors come with 1 to 14 HP.
6. Duty Cycle
When considering the purchase of an air compressor, one crucial factor to assess is its duty cycle. This specification, typically represented as a percentage, indicates the amount of time the compressor can operate within a given time frame, often expressed in a 10-minute duration.
For instance, a compressor with a 50% duty cycle means it can run for more than 5 minutes within a 10-minute period. On the other hand, higher-quality industrial-grade compressors often boast duty cycles of at least 75%, with some models reaching 100%. A 100% duty cycle indicates that the compressor can operate continuously without the risk of overheating or performance degradation.
To better illustrate the significance of the duty cycle, consider the following scenario: You and a friend are tasked with painting a barn using a 10 CFM compressor. Your compressor has a 65% duty cycle, while your friend’s compressor has a 50% duty cycle.
In practical terms, this means:
- With your compressor, you can paint for 6 ½ minutes before needing to allow for a 3 ½ minute cooldown period.
- In contrast, your friend’s compressor can only run for 5 minutes continuously before requiring a 5-minute cooldown period.
Another example highlights the impact of the duty cycle on motor power: A 5HP air compressor with a 100% duty cycle can operate continuously, whereas a 7.5HP compressor with a 75% duty cycle must allow for downtime to prevent overheating.
7. Oil Filling or Oil-Free
When considering an air compressor, one crucial aspect to evaluate is whether it requires oil for lubrication or operates oil-free. Each type has its advantages and is better suited for specific applications. Let’s delve into the details of both oil-filled and oil-free air compressors:
a. Oil-Filled Air Compressors
Oil-filled air compressors, also known as lubricated compressors, utilize oil for lubrication within the compression chamber. This lubrication reduces friction between moving parts, resulting in smoother operation and extended longevity of components.
b. Oil-Free Air Compressors
Oil-free air compressors, also known as oil-less compressors, utilize alternative methods for lubrication, such as Teflon-coated pistons or self-lubricating materials.
Certainly, here’s a comparison between oil-filled and oil-free air compressors:
|
Aspect |
Oil-Filled Compressors |
Oil-Free Compressors |
|
Lubrication |
Utilizes oil for lubrication |
Uses alternative methods like Teflon or self-lubricating materials |
|
Durability and Longevity |
Generally has a longer lifespan due to reduced wear and tear |
May have a shorter lifespan due to increased wear on components |
|
Noise Levels |
Operates quieter due to oil dampening noise and vibration |
Tends to be noisier compared to oil-filled compressors |
|
CFM Output |
Often delivers higher CFM output |
May have slightly lower CFM output |
|
Maintenance |
Requires regular maintenance including oil level checks, filter changes, and oil changes |
Requires minimal maintenance, no oil changes, and lower upkeep |
|
Clean Air Output |
May introduce oil contaminants into the air output |
Produces clean air, making it suitable for applications requiring pristine air quality |
|
Portability |
Typically heavier and less portable |
Generally more compact and lightweight, suitable for portability |
|
Applications |
Ideal for heavy-duty applications and continuous use |
Suitable for clean environments, portable applications, and intermittent use |
|
Overall Consideration |
Best suited for applications with higher demands and continuous usage |
Ideal for users prioritizing low maintenance, clean air output, and portability |
8. Tank Style
When selecting a 20-gallon air compressor, one crucial aspect that often goes overlooked is the tank style. The design and configuration of the tank can significantly impact the compressor’s performance, stability, and overall user experience. Let’s look into the various tank styles and why they should be a key consideration in your decision-making process.
a. Horizontal Tanks
Horizontal tanks are a common tank style for 20-gallon air compressors. They are characterised by their wide and low-profile design, making them suitable for situations where space is limited in the vertical dimension. These tanks offer stability and are often preferred for their ease of manoeuvrability. The low centre of gravity provided by a horizontal tank contributes to better balance, reducing the risk of tipping during transportation.
b. Vertical Tanks
Vertical tanks, on the other hand, have a more upright design, taking up less floor space. This style is advantageous in workshops or garages where floor space is at a premium. The vertical configuration allows the compressor to be tucked into corners or tight spaces, optimising the overall layout of the workspace.
c. Pancake Tanks
Pancake tanks represent a unique and space-efficient tank style. Characterised by their flat, disc-shaped design, these tanks are typically smaller in capacity but are highly portable. Pancake tanks are ideal for those who prioritise compactness and portability over larger air storage capacity.
d. Twin-Stack Tanks
Twin-stack tanks feature two separate air chambers, providing increased air storage capacity without sacrificing portability. These tanks are stacked horizontally or vertically, and the dual-chamber design allows for continuous operation by alternating between chambers. Twin-stack tanks are an excellent compromise for those who need a balance between air capacity and mobility.
9. Tank Material and Models
While analyzing this factor, you have to check out the space requirement and how portable the air compressor has to be. A 20-gallon air compressor has a medium storage footprint which satisfies both the above requirements.
If you want an air compressor that can be installed in a garage and is mostly used for vehicle work, then check out the model that is suitable for that particular requirement, rather than the one that has large wheels and a sturdy carriage.
However, if you have to move around the air compressor to your workplace, then choose a model that comes with large wheels and easy mobility.
When it comes to the sturdiness and durability of the tank, you have to look at the tank material. Some of the materials are solid cast iron, aluminum with cast iron coating, and aluminum. We recommend going for cast iron as it is the most durable option.
10. Control Systems
They help you operate the compressor easily. Some of the control systems often found with different air compressor models are – start and stop systems, constant speed controls, and several others.
11. Other Features to Consider
- Air Cooling System: It cools down the pumping machinery and also extends the motor life as well.
- Thermal Overload Switch: It will automatically shut off whenever the motor overheats. This will increase the life span of the air compressor and protect your investment.
- ASME Certification: It indicates that only high quality materials and craftsmanship is used. This label often states that the unit will meet the standards of American Society of Mechanical Engineers.
- Roll Cage: It protects the compressor or battery from crushes. If you are planning to use the tools for just one project, then you can rent the air compressor instead of purchasing one.
How to Use a 20-gallon Air Compressor?
Using a 20-gallon air compressor isn’t as difficult as it may seem. For using it, you can just follow some simple steps. We have mentioned them below for your reference.
- Initially, you have to identify whether it is oil-free or oil air compressor. If it is an oil one, then make sure it is properly lubricated.
- Once you have followed this process, you have to move on to fix the hose to the regulator valve.
- Now attach the power tool to the hose.
- Plug the compressor into the nearest plug socket.
- Once the air compressor is set up properly, you have to turn it on by pulling the safety valve.
- Look out for the specific tool you are using and find out how much air pressure it needs to work.
- Make sure the pressure on the air compressor is similar to the pressure the tool requires.
- Now, it is ready to use.
20 Gallon Air Compressor – FAQs
Ans: 20 gallon air compressor can be used for multiple things ranging from simple DIY projects, business use to commercial purposes.
Ans: Using a 20 gallon air compressor isn’t as difficult as it may seem. For using it, you can just follow some simple steps. We have mentioned them below for your reference.
* Initially, you have to identify whether it is oil-free or oil air compressor. If it is oil one, then make sure it is properly lubricated.
* Once you have followed this process, you have to move on to fix the hose to regulator valve.
* Now attach the power tool to the hose.
* Plug the compressor into nearest plug socket.
* Once the air compressor is set up properly, you have to turn it on by pulling the safety valve.
* Look out for the specific tool you are using and find out how much air pressure it needs to work.
* Make sure the pressure on air compressor is similar to the pressure the tool requires.
* Now, it is ready to use.
Ans: Usually, air compressors have a long life and you should be easily use for at least 20 to 30 years which is similar to 40,000 to 60,000 hours of continuous work. However, this range can increase or decrease based on some features. Some brands market that their models last for even more than we provided. So, check out carefully and make your choice wisely.
Ans: It can probably run an impact wrench for up to ½ inch drive. You can also use ¾ inch or even larger however you cannot get full torque out of the tool. They are suitable for inflating tires or running air ratchets. When it comes to carpenters, they are an overkill for running multiple tools simultaneously.
Ans: Most of the 20 gallon air compressors we have analyzed in the market draw 15 amps on 120 volt household current. If you want to run these air compressors on a generator, then you will need a model that can provide at least 2000 running watts or 4000 starting watts. However, for best performance we recommend to choose a model with 3000 running watts/4000 starting watts.
Manufacturers usually don’t recommend using generator for powering an air compressor. According to them, these compressors can get damaged due to sudden fluctuations in the power. Using generator will be considered as improper use and void the warranty of compressor.
Ans: Draining compressor tank is an important part of improving the durability and lifespan of an air compressor. So, easy process will help you properly maintain the unit.
* First switch off the compressor and unplug it from the electrical outlet or power source.
* You have to eliminate the internal pressure and for doing that you can pull then tank’s safety value. It releases the pressurized air present inside.
* Now locate the tank’s drain valve. This is usually present at the bottom of tank.
* Open the drain valve and make sure the moisture is completely out.
Conclusion
So, in this article, we’ve covered some top-notch 20-gallon air compressors, detailing their key features and options. You’ll also find a handy buying guide for air compressors. All this info should make it easier for you to pick the perfect air compressor. But if you’re still unsure, here are a few recommendations to help you out.
- If you want one of the best-performing 20-gallon air compressors out there, then you can go with the Stealth Air Compressor. you get a maximum air pressure of 150 PSI along with a highly powerful 1.8 HP motor. Since this is a reputable brand, and with great build quality.
- You can also go with the Porter-Cable Air Compressor if you are on a budget. Despite the lower price tag, it can offer a 150 PSI maximum air pressure limit. It uses a 1.5 HP motor to quickly fill its 20-gallon air tank. And despite its affordable price tag, you get a 1-year warranty with it making it a reliable option for a lot of users.
- For Professionals in Noise-Sensitive Environments California Air Compressor With an ultra-quiet operation at only 70 decibels, this air compressor is a perfect fit for professionals working in environments where noise reduction is crucial. Its durability, easy start-up valve, and automatic drain valve add to the convenience, making it an excellent choice for professionals who prioritize both performance and reduced noise levels.
One Response
Thanks To Best Gallon Air Compressors Reviews & Buying Guide 2021.