Best 20 CFM Air Compressors: Top 9 Picks (November 2026)

The best 20 CFM air compressors include the VEVOR 13-Gallon Air Compressor for quiet home workshops, the Metabo HPT Portable Pancake Air Compressor for multiple nailers, and the VEVOR Air Compressor for the highest stated airflow.

On this page (7 sections)

1. Which air compressor is closest to 20 CFM?
2. The best 20 CFM air compressor options
3. How do you choose a compressor for a 20 CFM tool?
4. Does tank size matter for 20 CFM work?
5. How should you set up and care for an air compressor?
6. What can a 20-gallon compressor do?
7. Best 20 CFM air compressor: final decision

The best 20 CFM air compressor option in this roundup is the VEVOR 15-gallon model, with 5.3 CFM at 90 PSI and a 2 HP oil-free motor. None of these products reaches 20 CFM, so they are better matched to inflation, nailers, short tool cycles and light spray work than to tools that need 20 CFM continuously.

A 20 CFM requirement usually points to a larger shop compressor or a multi-compressor setup. For abrasive work on wood, compare air compressors for wood sandblasting.

The picks below are still useful when the phrase “20 CFM” describes your target airflow and you need to understand what smaller portable models can and cannot do.

If you need help with the basic measurement, read What Is CFM on an Air Compressor?. For a smaller tool setup, our guide to the best 5 CFM air compressor gives a closer match to several products here.

Our picks at a glance

1. 1
   Best for quiet home workshops

   VEVOR 13-Gallon Air Compressor

   9.6/10 our score

   See it on Amazon
2. 2
   Best for multiple nailers

   Metabo HPT Portable Pancake Air Compressor

   9.5/10 our score

   See it on Amazon
3. 3
   Best for the highest stated airflow

   VEVOR Air Compressor

   9.4/10 our score

   See it on Amazon

4. 4

   ECOMAX Air Compressor 6 Gallon 150 PSI

   Best for an included accessory kit
   Check it
5. 5

   California Air Tools 20020 2.0 HP Ultra

   Best for a 20-gallon quiet tank
   Check it
6. 6

   Stealth 20 Gallon Ultra Quiet Air Compressor

   Best for a quiet 20-gallon setup
   Check it
7. 7

   Craftsman Air Compressor

   Best for broad garage tool use
   Check it
8. 8

   AAIN Ultra Quiet Air Compressor

   Best for small-tool bursts
   Check it
9. 9

   Klutch 20-Gallon Air Compressor

   Best for a simple shop workhorse
   Check it

Which air compressor is closest to 20 CFM?

The VEVOR 15-gallon compressor and California Air Tools 20020 are the closest matches in this group, but both are rated at 5.3 CFM at 90 PSI. That is well below 20 CFM, so neither should be treated as a true 20 CFM compressor.

We compared the stated airflow at 90 PSI where it was available, then considered tank size, pressure, noise, portability and the intended work. A larger tank can make short bursts easier, but it cannot replace the pump capacity needed for continuous high-airflow tools.

For longer sessions, compare air compressors for continuous use.

Our score weighs specs, features and buyer feedback against what you're shopping for. The scores are a guide to fit within this roundup, not a claim that every model can run every pneumatic tool.

The best 20 CFM air compressor options

The products below are ordered by score, with the strongest overall fit first. Read each section for the airflow limit and the kind of work it suits.

1

VEVOR 13-Gallon Air Compressor: Best for quiet home workshops

9.6/10Our score

• 13-gallon tank
• 2 HP motor
• 4.6 SCFM at 90 PSI
• 66 dB noise level
• 125 PSI maximum pressure
• Oil-free tank

This VEVOR model suits home workshops that need a portable oil-free compressor for inflation, woodworking, auto repairs and spray painting. Its 66 dB noise level is the lowest stated level in this group.

See it on Amazon

Pros

• Lowest stated noise level
• 13-gallon tank
• Two 7-inch rubber wheels
• Oil-free operation

Cons

• Does not deliver 20 CFM
• Lower stated airflow than the larger VEVOR model

The VEVOR 13-Gallon Air Compressor fits a quieter home workshop that needs more reserve than a small pancake model. Its 13-gallon tank, 2 HP motor and 4.6 SCFM at 90 PSI suit tire inflation, woodworking, auto repairs and spray painting.

At 66 dB, it has the lowest stated noise level in this group. That helps near a home, office or shared workspace, or when you would rather not move the unit to another room.

The oil-free design cuts oil-related maintenance. Two 7-inch reinforced rubber wheels make indoor and outdoor moves easier, and the listed dimensions help you check fit beside a bench.

The 125 PSI maximum pressure suits general tasks, but 4.6 SCFM is not close to continuous 20 CFM use. Choose it for quiet, moderate airflow and plan pauses with steady-drawing tools.

Set it on a stable surface with room around it and set the regulator to your tool pressure. Drain the tank as the manual directs after humid use to limit moisture buildup.

2

Metabo HPT Portable Pancake Air Compressor: Best for multiple nailers

9.5/10Our score

• 6-gallon tank
• 200 PSI maximum pressure
• 4 CFM at 90 PSI
• Supports multiple nailers
• 41 lb weight
• 73 dB noise level

Metabo HPT's compact pancake compressor is aimed at framing, roofing, siding, finish and brad nailers. Its 6-gallon tank and 41 lb weight make it easier to move than the 20-gallon units.

See it on Amazon

Pros

• 200 PSI rating
• Lightest stated weight among these picks
• Supports multiple nailers
• 1-year warranty

Cons

• Smallest tank among the main workshop models
• Does not deliver 20 CFM

The Metabo HPT Portable Pancake Air Compressor is the best choice for multiple nailers and frequent jobsite movement. Its 6-gallon tank delivers 4 CFM at 90 PSI, while the product is designed to support combinations of framing, roofing, siding, finish and brad nailers.

At 41 lb, it is lighter than the larger wheeled compressors here. The pancake shape can also sit low in a truck bed or storage area, which helps when you carry it between rooms or job sites during the day.

The 200 PSI rating provides more pressure reserve than the 125 PSI models, although pressure reserve does not equal 20 CFM airflow. That distinction matters because a nailer uses short bursts of air, while a sander or grinder may keep drawing air for much longer.

Choose this compressor for nail-driven work rather than continuous sanding or grinding. It is a practical match when portability and nailer support matter more than a large tank, and when you want to run more than one nailer without constant waiting between shots.

Metabo HPT identifies the model as EC914S and includes a 1-year warranty. Its stated noise level is 73 dB, so it is not silent, but the light weight makes it easier to position near the work instead of running a long hose across a floor.

3

VEVOR Air Compressor: Best for the highest stated airflow

9.4/10Our score

• 15-gallon steel tank
• 2 HP motor
• 5.3 CFM at 90 PSI
• 125 PSI maximum pressure
• 78 dB noise level
• Oil-free operation

This VEVOR compressor has the highest stated airflow in the group at 5.3 CFM at 90 PSI. It fits buyers who want more reserve and airflow than a small pancake compressor without moving to a larger high-CFM system.

See it on Amazon

Pros

• Highest stated airflow here
• 15-gallon tank
• 2 HP motor
• Oil-free pump

Cons

• 78 dB noise level
• Does not deliver 20 CFM

The VEVOR Air Compressor has the highest stated airflow in this group at 5.3 CFM at 90 PSI. Its 15-gallon steel tank and 2 HP oil-free motor give it more reserve than the 6-gallon options.

VEVOR lists tire inflation, auto repair and spray painting among its recommended uses. The compressor also supports tools such as nail guns, impact wrenches, spray guns and pneumatic screwdrivers, but the tool's actual airflow demand still controls how long it can run before the tank pressure falls.

The 125 PSI maximum pressure is suitable for many general workshop tasks. Its 78 dB noise level is higher than the quieter 20-gallon options, so placement matters if you work near living areas or if other people share the space.

Choose it when you want the strongest stated CFM in this roundup without moving to a much larger compressor class. The extra gallonage over a 13-gallon tank gives a little more buffer for bursts, yet it does not change the basic limit set by the pump.

For setup, keep the intake clear and allow room around the unit for airflow. Because oil-free operation removes oil checks, your main care tasks are draining moisture, inspecting the hose and couplers, and listening for leaks that waste air.

4

ECOMAX Air Compressor 6 Gallon 150 PSI: Best for an included accessory kit

9.3/10Our score

• 6-gallon tank
• 150 PSI maximum pressure
• 1.5 HP motor
• 25 ft air hose
• 10-piece accessory kit
• Oil-free pump

ECOMAX is a practical starter set for inflation, blow cleaning, air brushing and light spraying. The included hose, gauge, couplers, blow gun and other accessories reduce the need to gather separate setup parts.

See it on Amazon

Pros

• 10-piece accessory kit
• 25 ft hose included
• 150 PSI maximum pressure
• 34.17 lb weight

Cons

• Stated airflow is lower than the other workshop picks
• Does not deliver 20 CFM

The ECOMAX Air Compressor 6 Gallon 150 PSI is the most complete starter kit here. It includes a 25 ft PVC hose, thread seal tape, air chuck, plugs, coupler, tire pressure gauge, nozzle, blow gun and sleeve.

Its 6-gallon tank and 150 PSI maximum pressure suit inflation, blow cleaning, air brushing, spraying, brad nailers and staplers. At 34.17 lb with a flip-up handle, it is easier to carry and store than the 20-gallon models.

The stated airflow is 3 cubic inches per minute, lower than the CFM ratings for the other picks. Use it for lighter tasks and short cycles, since the motor will spend more time catching up with the tank.

Choose ECOMAX if the included hose and accessories matter more than maximum CFM. You can set up basic jobs right away without ordering fittings separately.

Dual gauges show tank pressure and tool pressure separately. That makes regulator settings easier and helps you check recovery before a longer run.

5

California Air Tools 20020 2.0 HP Ultra: Best for a 20-gallon quiet tank

9.1/10Our score

• 20-gallon tank
• 2 HP motor
• 5.3 CFM at 90 PSI
• 70 dB noise level
• 125 PSI maximum pressure
• Oil-free dual piston pump

The California Air Tools 20020 combines a 20-gallon tank with 5.3 CFM at 90 PSI and a 70 dB noise level. It suits garages and shops that need more stored air while staying on a 110V outlet.

See it on Amazon

Pros

• 20-gallon tank
• 5.3 CFM at 90 PSI
• 70 dB noise level
• Wheels and oil-free dual piston pump

Cons

• Heavy at 134 lb
• Does not deliver 20 CFM

The California Air Tools 20020 2.0 HP Ultra is the strongest pick for a 20-gallon tank with moderate noise. It delivers 5.3 CFM at 90 PSI from a 2 HP motor at a stated 70 dB.

The oil-free dual piston pump and 125 PSI maximum pressure suit spray guns, sanders and other higher-demand tools in shorter cycles. The tank stores more air for bursts, but 5.3 CFM still falls far short of 20 CFM for continuous use.

At 134 lb, it is heavy even with wheels for movement. It uses a 110V outlet and draws 14 amps, so check your circuit and outlet placement before settling it in a corner.

Choose it when tank reserve, lower noise and oil-free operation matter more than true 20 CFM output. Dual pressure gauges help you watch tank and tool pressure while you work.

Low amp draw and thermal protection help in garage use. Keep the motor area clear, drain the tank regularly, and let the unit cool between heavy cycles.

6

Stealth 20 Gallon Ultra Quiet Air Compressor: Best for a quiet 20-gallon setup

8.6/10Our score

• 20-gallon tank
• 1.8 HP motor
• 5 CFM at 90 PSI
• 68 dB noise level
• 150 PSI maximum pressure
• Oil-free motor

Stealth gives you a 20-gallon tank, 5 CFM at 90 PSI and a 68 dB noise level. Its wheels, two quick couplers and oil-free motor fit a garage where moving between tools and keeping maintenance simple matter.

See it on Amazon

Pros

• Quietest stated 20-gallon option
• 150 PSI maximum pressure
• Two quick couplers
• 8-inch rubber wheels

Cons

• 1.8 HP motor
• Does not deliver 20 CFM

The Stealth 20 Gallon Ultra Quiet Air Compressor is the best quiet 20-gallon option by its stated 68 dB noise level. It provides 5 CFM at 90 PSI, a 1.8 HP motor and 150 PSI maximum pressure.

The oil-free motor reduces maintenance, while two quick couplers make switching between tools easier. Stealth also lists 8-inch rubber wheels for movement around a garage, which helps when you need to shift the unit closer to a car or bench for a short job.

The 20-gallon tank can support short bursts from tools such as nailers, inflation tools and other accessories. It does not supply the 20 CFM needed for continuous high-demand grinding, sanding or similar work, so match the tool to the airflow before you plan a long session.

Choose this model when a large tank and quiet operation are central to your setup. Measure the storage space first because the compressor is 20 in long, 18 in wide and 42 in high, and taller units need clearance for valves and gauges.

The cold weather start and low voltage start features listed for this model can help in seasonal garages. Even so, drain moisture after use, inspect the couplers for leaks, and keep the wheels and feet stable on a flat floor.

7

Craftsman Air Compressor: Best for broad garage tool use

8.3/10Our score

• 20-gallon tank
• 1.8 HP motor
• 4 CFM at 90 PSI
• 175 PSI maximum pressure
• Two quick couplers
• Oil-free pump

The Craftsman 20-gallon model is aimed at garage, jobsite and workshop tasks such as inflation, nailing, drilling and spraying. Its 175 PSI maximum pressure and two quick couplers support a flexible setup.

See it on Amazon

Pros

• 175 PSI maximum pressure
• 20-gallon tank
• Two quick couplers
• 6 ft cord and wheels included

Cons

• 4 CFM at 90 PSI
• 80 dB noise level

The Craftsman Air Compressor suits a garage or workshop that needs a 20-gallon tank, two quick couplers and a high 175 PSI maximum pressure. Its 1.8 HP oil-free pump delivers 4 CFM at 90 PSI.

Craftsman lists inflation, cleaning, stapling, brad and finish nailing, roofing nailing, drilling, spraying, caulking and chiseling among its uses. The 6 ft cord, ball drain valve, plastic filter and two rubber wheels are included, so you have the basics for moving the unit and connecting tools without buying those parts separately.

The 80 dB noise level is higher than the Stealth and California Air Tools models. Its tank stores more air than a 6-gallon compressor, but the pump output remains below a continuous 20 CFM target, which means air hungry tools will still cycle the motor often.

Choose it for broad garage use when 175 PSI and dual couplers are more important than low noise. The two gauges let you read tank pressure and tool pressure at a glance, which is handy when you switch between a nailer and a sprayer.

The stainless steel construction and rubber feet are listed for durability and stability. Keep the filter clean, drain the tank through the ball valve after humid work, and check the hose connections before each use to keep pressure steady.

8

AAIN Ultra Quiet Air Compressor: Best for small-tool bursts

8.2/10Our score

• 6.3-gallon tank
• 1.5 HP motor
• 6 CFM stated airflow
• 116 PSI maximum pressure
• 70 dB noise level
• Oil-free design

AAIN fits short jobs that need a compact tank and higher stated airflow than many small compressors. Its recommended uses focus on tire inflation, air blowing, air brushing and short-time small pneumatic tool work.

See it on Amazon

Pros

• 6.3-gallon tank
• 70 dB noise level
• Oil-free motor
• Wheels

Cons

• 116 PSI maximum pressure
• Recommended for short-time small pneumatic tool use

The AAIN Ultra Quiet Air Compressor is built for short-time small pneumatic work, tire inflation, air blowing and air brushing. It has a 6.3-gallon tank, a 1.5 HP oil-free motor and a stated 5.5 to 6 CFM actual SCFM range at 116 PSI.

At 70 dB, its noise level is moderate for this group. A twin-cylinder design and a stated fill time from empty to 116 PSI in 2.75 minutes suit quick jobs where refill time matters.

The 116 PSI maximum pressure gives less headroom than the 150 PSI and 175 PSI options. Choose it for short jobs, not a continuous 20 CFM tool, and set the regulator carefully to avoid wasting tank air.

At 46.3 lb, it is easier to move than the heavy 20-gallon units. The black unit has wheels and includes a USB cable, so it can be rolled to a car or bench.

Oil-free operation keeps maintenance simple, but you still need to drain the tank and check the hose for wear. Plan work in bursts and let the tank recover between tools.

9

Klutch 20-Gallon Air Compressor: Best for a simple shop workhorse

7.9/10Our score

• 20-gallon tank
• 2 HP motor
• 4.2 SCFM at 90 PSI
• 175 PSI maximum pressure
• Oil-free pump
• Thermal overload protection

Klutch combines a 20-gallon tank with a 2 HP motor, oil-free pump and thermal overload protection. It suits a garage or workshop that values stored air, rubber wheels and reduced pump maintenance.

See it on Amazon

Pros

• 20-gallon tank
• 175 PSI maximum pressure
• Thermal overload protection
• 2-year warranty

Cons

• 4.2 SCFM at 90 PSI
• 80 dB noise level

The Klutch 20-Gallon Air Compressor is a simple shop-focused option with a 2 HP motor, 20-gallon tank and 175 PSI maximum pressure. Its stated output is 4.2 SCFM at 90 PSI.

The oil-free pump reduces regular maintenance, while thermal overload protection is designed to help prevent overheating. Rubber foot stabilizers reduce vibration, and large rubber wheels with an ergonomic handle support movement around a garage or workshop floor.

Klutch lists a 14 amp current rating and an 80 dB noise level. The compressor is a better fit for stored-air tasks and moderate workshop use than for a tool that continuously needs 20 CFM, so tools that draw air nonstop will outpace the pump.

Choose it when a 20-gallon tank, oil-free pump and thermal protection are more useful to you than the highest airflow in this group. The 175 PSI ceiling leaves headroom for tools that need higher pressure, even though the airflow at 90 PSI is more modest.

For daily care, keep the motor vents clear, drain the tank, and inspect the hose and fittings for leaks. The 2-year warranty listed for this model is a plus for shop buyers, but proper placement on a stable surface still matters for smooth, low vibration running.

How do you choose a compressor for a 20 CFM tool?

Choose the compressor by delivered CFM at the same PSI your tool uses, not by tank size or maximum PSI alone. If the tool needs 20 CFM continuously, a 4 to 6 CFM portable compressor will not keep up without long pauses.

Check the tool manual for average and continuous airflow. Some tools use high airflow only in bursts, while sanders, grinders and spray equipment may draw air for long periods.

A larger tank can delay pressure loss during a short burst. It cannot make a pump produce more air per minute, so recovery will still be slow if the tool demand is much higher than the compressor output.

For a broader comparison, see our guide to the best high CFM air compressors. If your work is mostly inflation or nailers, a smaller unit may be the better match.

Does tank size matter for 20 CFM work?

Tank size matters for reserve, recovery time and motor starts, but it does not define airflow. A 20-gallon tank can give a longer burst than a 6-gallon tank, yet both may still have pumps rated below 6 CFM at 90 PSI.

Use the tank as a buffer for intermittent work. For continuous work, prioritize delivered CFM, motor capacity, electrical needs and the tool working pressure, since those figures decide whether the tool keeps running or must pause.

The California Air Tools, Stealth, Craftsman and Klutch models all use 20-gallon tanks. Their stated airflow ranges from 4 to 5.3 CFM at 90 PSI, which shows why tank capacity and CFM must be compared separately.

Maximum PSI is a ceiling, not a measure of flow. A 175 or 200 PSI compressor may hold pressure for a short burst, but at only 4 CFM at 90 PSI it cannot match a tool that truly needs 20 CFM.

Duty cycle matters too. A motor that runs almost nonstop to keep up will wear faster and may overheat, which is why thermal protection and ventilation matter in a busy shop.

When two models share a tank size, compare CFM at your tool pressure first. Use tank size second, to judge reserve for bursts and how often you will stop.

Electrical needs also affect real use. A compressor drawing 14 amps on 110V needs a suitable circuit, so plan outlet placement before you buy.

For most garage work, a 20-gallon tank is a practical middle ground. If your main tasks are inflation, nailing and light spraying, tank reserve may be enough, but if your main tool is a continuous air user, delivered CFM should drive the choice.

How should you set up and care for an air compressor?

Set the compressor on a stable surface with room around it for airflow and access to the controls. Use the correct electrical supply, connect the hose and fittings securely, then set the regulator to the tool's required pressure.

Drain moisture from the tank according to the manual, especially after humid use. Moisture left in the tank can contribute to corrosion, while water in the hose can affect painting and air tools.

Oil-free pumps reduce oil maintenance, but they still need basic care. Keep intake areas clear, inspect hoses and couplers, check for leaks and avoid exceeding the compressor's pressure or duty limits.

Before using a compressor with a spray gun or pneumatic tool, confirm the tool's CFM requirement at the working PSI. A compressor that reaches the pressure setting may still lack the airflow needed to keep the tool running.

What can a 20-gallon compressor do?

A 20-gallon compressor can support inflation, cleaning, nailers and short cycles with some spray guns, sanders or other pneumatic tools when its CFM matches the task. It stores more reserve air than a smaller tank, which can reduce immediate pressure drops during bursts.

The 20-gallon air compressor guide explains the work that fits this tank size. Remember that pump CFM remains the deciding factor for continuous tool use, so tank size alone should not set expectations.

For these products, the 20-gallon choices provide 4 to 5.3 CFM at 90 PSI. That suits many garage tasks, but it is not equivalent to a compressor rated at 20 CFM.

Tire inflation is a good fit for a 20-gallon tank. The reserve helps you top up tires without the motor running the whole time.

Nailers also match well, because they use short bursts of air. Framing, finish and brad nailers can work from a 20-gallon tank, and stored air gives a small cushion between shots.

Blow cleaning uses air in short bursts as well. A larger tank can keep the blow gun feeling strong while you clear a bench or floor.

Spray painting is more demanding, because a spray gun draws air steadily while you work. A 20-gallon compressor may handle a small part or short pass, but pressure can fall on a larger panel.

Sanders and grinders are often continuous users too. Even with a 20-gallon tank, a 4 to 5.3 CFM pump will struggle if the tool needs much more air at its working pressure, so check the tool label first.

Setup matters for getting the most from a 20-gallon unit. Set the regulator to tool pressure, use a hose long enough to reach the work, and drain the tank after humid use.

In short, a 20-gallon compressor is a versatile garage size for bursts and moderate jobs. It works well when your tools match its CFM, and poorly when you need 20 CFM delivered continuously.

Best 20 CFM air compressor: final decision

The VEVOR 15-gallon Air Compressor is the best overall option here because it has the highest stated airflow at 5.3 CFM at 90 PSI and a 15-gallon tank. Choose the California Air Tools 20020 or Stealth if you prefer a 20-gallon tank with moderate noise.

Choose Metabo HPT for multiple nailers and easier carrying. Pick ECOMAX for the included accessory kit, Craftsman for 175 PSI and dual couplers, AAIN for short small-tool work, or Klutch for a simple oil-free shop setup.

If your tool truly needs 20 CFM continuously, skip this group and choose a compressor designed for that delivered airflow. The right compressor matches the tool CFM at its working pressure, not simply the largest tank.

For quiet home use, the VEVOR 13-gallon model at 66 dB and the Stealth at 68 dB are the lower noise choices. That can decide it if you work near living space.

For jobsite carrying, weight matters as much as tank size. The Metabo HPT at 41 lb and the ECOMAX at 34.17 lb are far easier to move than the 20-gallon wheeled units.

Think about the tools you use most often before you decide. Nailers and inflators fit these portable models, while sanders, grinders and spray guns need a closer check against CFM at 90 PSI.

Included parts can also change value. ECOMAX includes a hose and full accessories, Craftsman includes two quick couplers and wheels, and Stealth includes two quick couplers for faster tool changes.

Oil-free pumps appear across most picks, which simplifies maintenance. You still need to drain the tank, keep vents clear, inspect hoses, and set the regulator for each tool.

A bigger tank helps with bursts, but it does not create airflow. That is why the 20-gallon models here still top out at 5.3 CFM at 90 PSI, well below a true 20 CFM target.

Match the compressor to the work, not the headline number. If the tool needs steady high airflow, step up to a larger shop compressor, and if the work is inflation, nailing or light spraying, one of these portable options can do the job well.

Our top 3 picks at a glance

1. 1
   Best for quiet home workshops

   VEVOR 13-Gallon Air Compressor

   9.6/10 our score

   See it on Amazon
2. 2
   Best for multiple nailers

   Metabo HPT Portable Pancake Air Compressor

   9.5/10 our score

   See it on Amazon
3. 3
   Best for the highest stated airflow

   VEVOR Air Compressor

   9.4/10 our score

   See it on Amazon

Frequently asked questions

Does any compressor here deliver 20 CFM?

No. The highest stated working airflow in this roundup is 5.3 CFM at 90 PSI from the VEVOR 15-gallon model and the California Air Tools 20020.

A true 20 CFM air compressor is a different class of equipment, so check the tool's required CFM and buy by delivered airflow at its working pressure.

What does 20 CFM mean on an air compressor?

20 CFM means the compressor can supply about 20 cubic feet of air per minute under a stated test condition. The pressure matters because CFM at 40 PSI and CFM at 90 PSI are not interchangeable.

Read what CFM means on an air compressor before comparing numbers.

Can a 5 CFM compressor run a 20 CFM tool?

Not continuously at the tool's full demand. A 5 CFM compressor may run a tool that uses 20 CFM in short bursts if the tank provides reserve, but pressure will fall and recovery will take longer.

For repeated use, choose a compressor whose delivered CFM meets the tool requirement.

Is a bigger tank the same as higher CFM?

No. Tank size stores compressed air, while CFM describes how quickly the pump supplies air.

A 20-gallon tank can support short bursts, but it doesn't turn a 5 CFM compressor into a 20 CFM compressor.

Use the tank for reserve and the CFM rating for continuous demand.

What size compressor do I need for a workshop?

Choose by the tool with the highest continuous CFM demand, then compare that requirement with the compressor's CFM at the same PSI. A tire inflator or brad nailer needs less sustained airflow than a sander, grinder or spray gun.

Use our air compressor size guide for the matching process.