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Air compressor for a framing nailer

Framing demand is published and modest. Roofing demand is not published anywhere we could find - so this page tells you how to size for it without pretending otherwise.

By Ryder M.Last updated Published
A carpenter assembling a timber frame on a deck

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Published figures

What framing actually demands

Engineering ToolBox lists 2.5 CFM for a framing nailer, on its stated 25% load factor. Metabo HPT publishes 0.09 SCFM at 100 PSI for the NR90AES1 on a per-cycle basis, with a 70 to 120 PSI operating range.

Those two figures look wildly different and both are correct - they describe the same tool at different firing rates. That is precisely why a single CFM number for a nailer is misleading, and why we publish both rather than picking the one that makes a compressor look good.

The practical consequence: nail pace sets the demand, not the badge on the tool. One person framing at a sustainable pace is a 2.6 CFM job. Two nailers off one compressor is not, and no tank size fixes it.

Published air demand at 90 PSI
ToolCFM @ 90 PSIAt loadDutyWhat the number means
Framing nailer, 21 or 30 degree2.5-BurstEngineering ToolBox lists 2.5 CFM for a framing nailer on a 25% load factor. Metabo HPT publishes 0.09 SCFM at 100 PSI for the NR90AES1 on a per-cycle basis. The two describe the same tool at different firing rates, which is exactly why one CFM number for a nailer is misleading: nail pace sets the demand, not the badge on the tool.
Roofing / coil nailerNot published-IntermittentNeither published chart carries a separate roofing-nailer line. Roofing is fired far faster and for far longer than framing, so treat it as the top of the framing range and size for recovery rather than peak. We will not print a number no source publishes.
Finish nailer, 15 gauge1.8-BurstBostitch publishes 1.8 CFM of free air at 80 PSI for its BTFP72155 running 60 fasteners a minute - a fast, sustained trim pace, not casual use. At a realistic pace the draw is a fraction of that.
Brad nailer, 18 gauge0.5-BurstThe most forgiving air tool there is. A nailer draws air only at the instant it fires, so almost any tank covers it. That is why a 1-gallon compressor is a genuinely complete tool for trim work rather than a compromise.

Where two references publish different figures, both are shown rather than averaged into a number nobody published. Primary sources: Ingersoll Rand air consumption chart, Engineering ToolBox air tool consumption, and per-tool manufacturer specifications.

Ranked

The picks

Quick picks

#ProductBest forScorePrice
1
A red six-gallon pancake air compressor on a garage floor
Porter-Cable C20022.6 CFM @ 90 / 6 gal / 150 PSIThe default answer to 'cheapest useful compressor'. 6 gallons, 2.6 CFM, 150 PSI, and it has been the same machine for years.
A first compressor for nailing, inflation and burst automotive work3.6/10★★☆☆☆
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2
A high-capacity pancake air compressor with a roll cage
Metabo HPT EC914S (THE TANK)4 CFM @ 90 / 6 gal / 200 PSI4.0 CFM at 90 PSI and 200 PSI max - the only 6-gallon unit here that breaks the 2.6 CFM ceiling.
Getting real CFM without moving up to a 20-gallon footprint5.1/10★★★☆☆
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3
A pneumatic framing nailer resting on framing lumber
Metabo HPT NR90AES17.5 lb0.09 SCFM at 100 PSI per cycle and 7.5 lb. Drives 3-1/2 inch nails off a 6-gallon pancake.
Framing, decking and subfloor off a portable compressor3.5/10★★☆☆☆
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4
A twenty-gallon vertical air compressor standing against a garage wall
Husky C201H 20-gallon4 CFM @ 90 / 20 gal / 175 PSI / 83 dBA4.0 CFM with 20 gallons at 175 PSI. The cheapest way to buy STORAGE rather than flow.
Burst automotive work where tank volume, not CFM, is the limit6.3/10★★★☆☆
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Scores are computed from manufacturer-published specs by the rubric on our methodology page. Nothing here has been bench-tested, and we do not publish prices we cannot verify.

Pick 1 - Porter-Cable C2002

3.6/10★★☆☆☆

Porter-Cable C2002

Best for: A first compressor for nailing, inflation and burst automotive work

Verdict

The default answer to 'cheapest useful compressor'. 6 gallons, 2.6 CFM, 150 PSI, and it has been the same machine for years.

What it does well

  • 2.6 CFM at 90 PSI and 3.7 at 40 - the most common spec in the budget class for a reason
  • 6-gallon tank at 150 PSI stores enough air for real bursts of impact work
  • Two couplers, so two people or two tools without swapping

What it will not do

  • Porter-Cable does not publish a noise figure for it; the class sits in the high 70s to low 80s dBA
  • 2.6 CFM will not run a ratchet, die grinder or sander continuously
How this 3.6 was calculated
MetricScoreWeightBasis
Air flow3.640%2.6 CFM at 90 PSI, on a 0.7-6 CFM scale
Stored air2.325%6 gal x 150 PSI = 900, on a 125-3,500 scale
Noise5.015%Manufacturer publishes no dBA figure - scored a neutral 5, not a guess
Portability5.010%No weight published - scored a neutral 5
Spec transparency3.310%2 of 6 useful figures published (CFM at 90, CFM at 40, dBA, duty cycle, recovery, weight)
A red six-gallon pancake air compressor on a garage floor

Licensed stock photo - illustrative of the category, not a photo of this unit

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Published specs

Porter-Cable C2002 published specifications
CFM @ 90 PSI2.6
CFM @ 40 PSI3.7
Tank6 gal
Max pressure150 PSI
NoiseNot published
Duty cycleNot published
RecoveryNot published
PumpOil-free
Motor0.8
WeightNot published
Power120V

Source: Porter-Cable C2002 - product specifications

Pick 2 - Metabo HPT EC914S

5.1/10★★★☆☆

Metabo HPT EC914S (THE TANK)

Best for: Getting real CFM without moving up to a 20-gallon footprint

Verdict

4.0 CFM at 90 PSI and 200 PSI max - the only 6-gallon unit here that breaks the 2.6 CFM ceiling.

What it does well

  • 4.0 CFM at 90 PSI is 54% more air than the rest of the 6-gallon class
  • 200 PSI max means the same 6 gallons holds far more usable air
  • Clears the published average demand for a 1/2-inch impact and a 3/8-inch ratchet

What it will not do

  • 41 lb, the heaviest 6-gallon unit in the roster
  • Metabo HPT does not publish a noise figure, and high-pressure pumps are not quiet
How this 5.1 was calculated
MetricScoreWeightBasis
Air flow6.240%4 CFM at 90 PSI, on a 0.7-6 CFM scale
Stored air3.225%6 gal x 200 PSI = 1200, on a 125-3,500 scale
Noise5.015%Manufacturer publishes no dBA figure - scored a neutral 5, not a guess
Portability7.010%41 lb, on a 20-90 lb scale
Spec transparency3.310%2 of 6 useful figures published (CFM at 90, CFM at 40, dBA, duty cycle, recovery, weight)
A high-capacity pancake air compressor with a roll cage

Licensed stock photo - illustrative of the category, not a photo of this unit

Check price on Amazon

#ad Disclosure - we do not publish prices we cannot verify

Published specs

Metabo HPT EC914S (THE TANK) published specifications
CFM @ 90 PSI4
CFM @ 40 PSINot published
Tank6 gal
Max pressure200 PSI
NoiseNot published
Duty cycleNot published
RecoveryNot published
PumpOil-free
MotorNot published
Weight41 lb
Power120V

Source: Metabo HPT EC914S THE TANK - product specifications

Pick 3 - Metabo HPT NR90AES1

3.5/10★★☆☆☆

Metabo HPT NR90AES1

Best for: Framing, decking and subfloor off a portable compressor

Verdict

0.09 SCFM at 100 PSI per cycle and 7.5 lb. Drives 3-1/2 inch nails off a 6-gallon pancake.

What it does well

  • 0.09 SCFM at 100 PSI published per cycle - genuinely undemanding for a full framing tool
  • 7.5 lb is light for a 3-1/2 inch capable nailer
  • 70-120 PSI operating range, so it works on every compressor in our roster

What it will not do

  • Nail pace is what drives demand; at roofing speed a small tank will not keep up
  • 21-degree plastic collation means you are buying plastic-strip nails, not paper-tape
How this 3.5 was calculated
MetricScoreWeightBasis
Air economy5.040%No average CFM published - scored a neutral 5
Handling0.825%7.5 lb, on a 1.8-8 lb scale
Noise5.020%No dBA published - scored a neutral 5
Spec transparency2.015%1 of 5 useful figures published (average CFM, CFM at load, dBA, weight, minimum hose)
A pneumatic framing nailer resting on framing lumber

Licensed stock photo - illustrative of the category, not a photo of this unit

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Published specs

Metabo HPT NR90AES1 published specifications
Average air @ 90 PSINot published as a CFM figure
Performance0.09 SCFM at 100 PSI per cycle, 70-120 PSI operating range, 64-70 nail magazine
NoiseNot published
Weight7.5 lb
Minimum hoseNot published

Source: Metabo HPT NR90AES1 framing nailer - product specifications

Pick 4 - Husky C201H

6.3/10★★★☆☆

Husky C201H 20-gallon

Best for: Burst automotive work where tank volume, not CFM, is the limit

Verdict

4.0 CFM with 20 gallons at 175 PSI. The cheapest way to buy STORAGE rather than flow.

What it does well

  • 20 gallons at 175 PSI is roughly six times the stored air of a 6-gallon 150 PSI pancake
  • 4.0 CFM at 90 PSI and 5.2 at 40 - enough to recover between bursts instead of chasing you
  • Vertical footprint takes a corner instead of floor space

What it will not do

  • 83 dBA published and a 7-minute fill from empty - plan to switch it on before you start
  • Oil-free at 20 gallons means a shorter pump life than a cast-iron oil-lubricated unit
How this 6.3 was calculated
MetricScoreWeightBasis
Air flow6.240%4 CFM at 90 PSI, on a 0.7-6 CFM scale
Stored air10.025%20 gal x 175 PSI = 3500, on a 125-3,500 scale
Noise0.715%83 dBA, on a 58-85 dBA scale
Portability5.010%No weight published - scored a neutral 5
Spec transparency6.710%4 of 6 useful figures published (CFM at 90, CFM at 40, dBA, duty cycle, recovery, weight)
A twenty-gallon vertical air compressor standing against a garage wall

Licensed stock photo - illustrative of the category, not a photo of this unit

Check price on Amazon

#ad Disclosure - we do not publish prices we cannot verify

Published specs

Husky C201H 20-gallon published specifications
CFM @ 90 PSI4
CFM @ 40 PSI5.2
Tank20 gal
Max pressure175 PSI
Noise83 dBA
Duty cycleNot published
Recoveryabout 7 minutes to fill from empty
PumpOil-free
Motor1.3 running
WeightNot published
Power120V

Source: Husky C201H 20-gallon compressor - retailer specification listing

What nobody publishes

The roofing data gap, stated plainly

Neither of the two published charts we rely on carries a separate roofing or coil nailer line. We looked. Rather than fill the gap with a plausible-sounding number, we are telling you it is empty.

What we can say from the physics of the job: roofing fires faster and for longer stretches than any other nailing task, so treat it as the top of the framing range or above, and size for recovery rather than peak. A 6-gallon tank at 2.6 CFM keeps up with one roofer working steadily. It will not keep up with a crew.

If you are roofing a whole house, the right sizing input is not a chart - it is how many nailers are on the hose and how fast the fastest person works. That is a judgment call, and we would rather hand it to you honestly than dress it up as a calculation.

Our rule when a figure does not exist

If a number cannot be sourced, it does not go on the page. Writing that the manufacturer does not publish a figure is more useful than a confident guess, and it is what our no-fabrication policy requires.

Buying both

Nailer and compressor as one purchase

If you are buying both at once, the nailer's own spec sheet is the sizing input, not a class average. Metabo HPT's published 70 to 120 PSI operating range means any compressor in our roster reaches its working pressure, and the per-cycle air figure means any tank covers it.

The thing to match carefully is the hose and fitting, not the compressor. A framing nailer at the end of 100 feet of 1/4-inch hose will drop below its working pressure at pace, and the fix is diameter rather than more compressor. A 3/8-inch hose is the right default for any nailer used at a working pace.

The other thing worth budgeting for: a filter-regulator at the compressor. Nailers are tolerant of damp air compared with spray guns, but water in the tool still causes rust and misfires, and a filter-regulator costs a fraction of a nailer and outlives several of them.

FAQ

Questions people actually ask

What size air compressor for a framing nailer?

A 6-gallon tank at 2.6 CFM covers one person framing at a sustainable pace. Engineering ToolBox publishes 2.5 CFM for the class, and the burst duration is a fraction of a second per nail. Two nailers on one compressor needs more flow, not more tank.

How many CFM does a roofing nailer need?

Neither of the published charts we use carries a roofing-nailer figure, so we will not print one. Treat it as the top of the framing range or above, and size for recovery: a 6-gallon 2.6 CFM unit keeps up with one roofer, not a crew.

Can a pancake compressor run a framing nailer?

Yes, comfortably, for one person at a normal pace. The framing nailer in our roster operates from 70 to 120 PSI and publishes 0.09 SCFM per cycle - a 6-gallon pancake supplies that many times over.

Do I need a 20 gallon compressor for framing?

Not for one nailer. A 20-gallon unit helps if two people are working off one compressor, or if you are also running burst automotive tools. For framing alone the extra tank buys nothing you will notice.

What hose should I use with a framing nailer?

3/8-inch ID is the right default at a working pace, especially on runs over 50 feet. A 1/4-inch hose will let pressure sag at the tool when you are nailing fast, and the symptom looks like an undersized compressor.

Sources

Where these numbers come from

Accessed September 2026. If a figure on this page does not match the manufacturer's current sheet, tell us at contact@psiandhose.com and we will correct and date the change - see our editorial policy.

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