Industrial Gold · P-Series · TWO-STAGE PISTON

P21H20

2 HP · Horizontal · 50% duty · electric · oil-lubricated · 2-stage
AVERAGE PRICE
$1,820
1 retailer
Industrial Gold P21H20

Industrial Gold P21H20 is a 2 HP two-stage reciprocating air compressor delivering 6 CFM at 125 PSI on a 20-gallon tank, wired for 115/120V single-phase. Rated at 50% duty cycle, it suits intermittent-demand shop environments including small garages, body shops, and light fabrication tasks. The simplex piston design and compact footprint make it suitable for spaces where larger industrial units are impractical. List price is approximately $1,820 through specialty compressor retailers. Key specs: 2 HP motor, 6 CFM at 125 PSI, 20-gal tank, 115/120V single-phase, 2-stage piston, 50% duty cycle. Note: scfm_psi_rating not confirmed at a specific standard pressure from primary datasheet; value sourced from retailer listing.

HP
2
CFM
6 @ 125 PSI
Duty
50% continuous
Tank size
20 gal
Air output per horsepowerAirflow per motor HP
3CFM/HP
Poor 2.8Typical 3.15Good 3.5
Isentropic efficiencyClass median · 2-stage piston
67%
Poor <50Good 70Best 92
Price per cubic foot · minuteVerified retailer price
$303$/SCFM
Good $180Typical $211High $260
PUMP & DRIVE
Stages2-stage recip
Cylinder—
Pump RPM—
Lubricationoil-lubricated
Oil—
Sump—
Pump life—
Pump material—
Head material—
Intercooler—
PERFORMANCE
Catalog CFM6 @ 125 PSI
CFM / HP3
Cut-in / out—
Tank fill—
Est. draw1.8 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. $630
Maintenance · yearlyEst. $80
Savings with Compressor Controller · yearlyEst. $145–$265
ELECTRICAL & FORM
Serviceelectric
Voltage115/120
Amps—
Motor—
Motor RPM—
Control—
Starter—
Weight—
FormHorizontal · 20 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
1708 units
Peer class
28 · 2 HP
Sizing & pricevs. 28 in class
  • SCFM @ 2 HP6cfm
    3median 7.817
    -22.6% vs. median
  • Average price$1,820
    $299median $2,543$9k
    -28.4% vs. median
Efficiency vs. peersvs. 28 in class
  • CFM per HP3cfm/hp
    1.65median 48.65
    -25% vs. median
  • Price per CFM$303$/scfm
    $17median $267$1,101
    +13.2% vs. median

Price history

Showing the current verified price for each retailer. As the price-tracking worker collects new readings, dots will appear along each line.

$1,729$1,789$1,850$1,911avg $1,820today-10d-20d-30d
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