What horsepower is the Quincy G15H8WQ air compressor?

The Quincy G15H8WQ is rated at 5.5 HP.

How much air does the Quincy G15H8WQ produce?

The Quincy G15H8WQ delivers 9.5 SCFM at 90 PSI.

What is the maximum pressure of the Quincy G15H8WQ?

The Quincy G15H8WQ has a maximum operating pressure of 145 PSI.

What size tank does the Quincy G15H8WQ have?

The Quincy G15H8WQ has a 8-gallon portable tank.

Is the Quincy G15H8WQ single-stage or two-stage?

The Quincy G15H8WQ is a single-stage compressor.

Is the Quincy G15H8WQ oil-free or oil-lubricated?

The Quincy G15H8WQ is oil-lubricated.

What is the Quincy G15H8WQ best for?

The Quincy G15H8WQ is best suited for Portable jobsite air for framing crews, roofers, and contractors running nail guns and impact tools where no power outlet is available..

Quincy G15H8WQ – 5.5 HP 8-Gallon Portable Air Compressor

Quincy G15H8WQ is a 5.5 HP gas-powered wheelbarrow compressor delivering 9.5 CFM at 90 PSI (145 PSI maximum), running on a Honda GX160 engine. The twin 4-gallon tanks provide 8 gallons total capacity on a portable wheelbarrow frame, making it suited for remote jobsites, roofing, framing, and field service work without electrical hookup. At 550 lbs, it offers contractor-grade portability. Single-stage compression, oil-lubricated. Use case: pneumatic nailers, framing guns, and light air tools on construction sites where grid power is unavailable. Confirm final CFM rating at operating PSI against Quincy G-Series gas compressor documentation.

5.50

CFM

9.5 @ 90 PSI

Duty

— continuous

Tank size

8 gal

Air output per horsepowerAirflow per motor HP

1.73CFM/HP

Poor 2.8Typical 3.15Good 3.5

Isentropic efficiencyClass median · 1-stage piston

58%

Poor <50Good 70Best 92

Price per cubic foot · minuteVerified retailer price

$142$/SCFM

Good $180Typical $211High $260

PUMP & DRIVE

Stages1-stage recip

CylinderSingle-stage

Pump RPM1250 rpm

Lubricationoil-lubricated

Oil—

Sump—

Pump life—

Pump material—

Head material—

Intercooler—

PERFORMANCE

Catalog CFM9.5 @ 90 PSI

CFM / HP1.73

Cut-in / out—

Tank fill—

Est. draw4.8 kW

COST & MAINTENANCE

Compressor Controller ROI calc · $0.14/kWh · 1920 hr/yr · 70% motor efficiency · HP×1.10 sizing · savings 23–42% of electric

Electric · yearlyEst. $1,733

Maintenance · yearlyEst. $138

Savings with Compressor Controller · yearlyEst. $399–$728

ELECTRICAL & FORM

Servicegas

Voltage—

Amps—

Motor—

Motor RPM—

Control—

Starter—

Weight143 lb

FormPortable · 8 gal

BUILD & ENVIRONMENT

Air outlet—

Drain—

Drain outlet—

ASME tank—

Made in USA—

Noise—

Op. temp—

Dimensions—

Ship weight—

Warranty—

Where this sits in the catalog

Histograms below: highlighted bar marks this unit’s bucket.

Catalog: 1655 units
Peer class: 4 · 5.5 HP

Sizing & pricevs. 4 in class

SCFM @ 5.5 HP9.5cfm
4median 9.413
+1.1% vs. median
Average price$1,423
$1,203median $1,427$2k
-0.3% vs. median

Efficiency vs. peersvs. 4 in class

CFM per HP1.73cfm/hp
0.84median 1.732.51
-0% vs. median
Price per CFM$148$/scfm
$130median $156$261
-5.4% vs. median

Where this is sold

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Price history

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Compressor Pros

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