Specifications
Air Compressors Category Spec Sheet
Air compressors are essential heavy equipment used to power pneumatic tools and systems on construction sites, roadwork projects, and industrial applications. They convert power into potential energy stored in pressurized air, offering a portable and reliable energy source for a variety of tasks. Key specifications often include engine output, air delivery rate (CFM), and operating pressure (PSI).
AI-updated monthly · Last refresh 7/18/2026
Specifications by system
Engine
Horsepower25-600 hpDiesel engines are most common for heavy-duty units.
Fuel Tank Capacity20-150 gallonsAffects operational duration between refueling.
RPM Range1800-2400 rpmGoverned engine speed for optimal compression.
Compressor System
Free Air Delivery (FAD)100-1600 cfmCubic feet per minute, the most critical specification for air output.
Operating Pressure80-200 psiPounds per square inch, dictates suitability for different tools.
Maximum Pressure100-250 psiHighest pressure the system can achieve.
Air Outlets2-6Number of simultaneous tool connections.
Cooling SystemAir/Oil cooledType of system to manage heat generated during compression.
Dimensions
Length8-18 ftOverall length for transport and site placement.
Width4-7 ftOverall width for transport and site placement.
Height5-9 ftOverall height for transport and clearance.
Dry Weight2,000-18,000 lbsWeight without fuel or operating fluids.
Chassis/Undercarriage
Axle ConfigurationSingle/Tandem axleInfluences towing stability and weight distribution.
Tire Size13-16 inchCommon sizes for robust site mobility.
Ground Clearance10-20 inchImportant for uneven terrain on job sites.
Operating Features
Sound Level65-100 dBANoise output at 7 meters, important for regulated environments.
Control PanelAnalog/Digital displayInterface for monitoring and adjusting settings.
Safety Shut-offsLow oil pressure, High temperatureEssential for protecting the engine and compressor.
Weight classes
| Class | Weight range | Typical use |
|---|---|---|
| Small Portable | under 3,000 lbs | Small construction, general utility |
| Medium Duty | 3,000-10,000 lbs | Roadwork, demolition, sandblasting |
| Heavy Duty | 10,000-20,000 lbs | Large industrial, pipeline, heavy-duty drilling |
Common attachments
BreakersJackhammersSandblasting potsAir tools (impact wrenches, grinders)Pneumatic pumpsRock drillsSpraying equipmentPneumatic sawsBlow gunsTube cleaning guns
Typical price ranges
Used Entry-Level
$5,000 - $20,000Older models, lower CFM, potential for higher hours or maintenance.
Used Mid-Range
$20,000 - $60,000Well-maintained units, good CFM for general construction.
New Mid-Range
$30,000 - $90,000Brand new units with modern features and warranties.
New Heavy-Duty/High CFM
$90,000 - $250,000Large industrial compressors, high CFM, advanced controls.
Buyer tip: Always verify the actual CFM output at the desired operating pressure as this is the most crucial specification. Inspect engine and compressor maintenance records, and check for any signs of oil leaks or unusual noises on used units.