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Contractor Jobsite Air Compressors
Contractor and jobsite air compressors are portable, field-ready units built for framing crews, roofers, fencing contractors, and tradespeople who need compressed air at job sites that change daily. CompressorPros carries gas and electric contractor compressors from 1.5 to 14 HP, plus compressor/generator and compressor/generator/welder combos. Standard shipping is free.
What Are Contractor and Jobsite Air Compressors?
A contractor air compressor is a portable unit designed to travel to the job site every day and power the pneumatic tools that framing crews, roofing crews, fencing contractors, siding installers, and general tradespeople rely on. These compressors must be durable enough for daily transport in a truck bed, powerful enough to run nailers and light impact tools throughout the shift, and available in configurations that work at sites with or without electrical power. Most contractor compressors are gasoline-powered for field independence, though electric portables serve indoor job sites and renovation work where outlets are available.
Gasoline Piston Portables vs. Electric Portables vs. Compressor/Generator/Welder Combos
Gasoline Piston Portables
Gas-powered piston portables are the backbone of contractor compressed air. They use Honda or similar commercial engines and deliver 8-15 CFM from 4-5.5 HP, enough for framing nailers, roofing nailers, finish nailers, and intermittent impact tools. They require no electrical power and are available in hand carry, wheeled, and wheelbarrow configurations. The Jenny K5HGA-8P 5.5 HP Honda Gasoline Driven Single Stage Portable Air Compressor is a solid twin tank contractor air compressor. The Quincy G15H8WQ 5.5 HP Honda Powered Contractor Portable Air Compressor uses a wheelbarrow frame for rough-terrain job sites. For lighter crews working on rooftops and in tight spaces, the Mi-T-M AM1-HM04-05M 4 HP Gasoline Driven Single Stage Hand Carry Air Compressor weighs under 100 pounds and can be carried by one person.
Electric Portables
Electric portable compressors plug into 115V outlets and serve indoor job sites, renovation projects, and finish work where gasoline exhaust is not acceptable. They deliver 4-8 CFM from 1.5-2 HP motors and handle brad nailers, finish nailers, and light pneumatic tools. The C-Aire P016H020-1115 1.6 HP 115 Volt 20 Gallon Horizontal Portable Air Compressor plugs into any standard outlet for immediate use on interior trim and finish work.
Compressor/Generator and Compressor/Generator/Welder Combos
Multi-function units combine an air compressor, electrical generator, and in some cases a welder into a single engine-driven package. These serve contractors who need compressed air, electrical power, and welding capability at remote sites without running three separate machines. The EMAX EGES14020T Combination Air Compressor Generator Welder delivers all three functions from one platform with 28 organic clicks. Mi-T-M and Industrial Gold also offer compressor/generator and compressor/generator/welder combos from 13 to 14 HP.
Types of Contractor Compressors by Trade
Framing and Structural Work
Framing nailers draw 4-6 CFM at 90 PSI. A 5.5 HP gas portable on an 8-17 gallon tank is the standard for framing crews. Wheelbarrow frames handle the rough terrain typical of new construction sites.
Roofing
Roofing air compressors must be light enough to carry or hoist to a rooftop. Roofing nailers draw 3-5 CFM. Hand carry gas compressors at 4-5.5 HP are the preferred configuration since they can be lifted onto a roof by one or two people. Electric portables work for re-roofing projects where power is available at the building.
Finish and Trim Work
Brad nailers and finish nailers draw 1-2 CFM and operate at 60-80 PSI. A small electric portable at 1.5-2 HP on a 17-20 gallon tank handles all finish carpentry tasks. Electric is preferred for interior trim since it produces no exhaust.
Fencing, Siding, and General Contracting
These trades use a mix of nailers, staplers, and light impact tools. A 5.5 HP gas portable covers most requirements. Contractors who also need electrical power at the site benefit from a compressor/generator combo.
Key Specifications
- CFM (Cubic Feet per Minute): A framing nailer draws 4-6 CFM; a roofing nailer draws 3-5 CFM; a brad nailer draws 1-2 CFM; a stapler draws 1-3 CFM. Add up all nailers running simultaneously and include a 25% buffer.
- HP (Horsepower): Gas portables: 4-5.5 HP for single-tool and two-tool setups. Compressor/generator combos: 13-14 HP. Electric portables: 1.5-2 HP.
- Tank Capacity (Gallons): Hand carry gas: 5-8 gallons. Wheeled and wheelbarrow gas: 8-17 gallons. Electric portables: 17-30 gallons. Larger tanks reduce cycling and provide a longer buffer between refills.
- Max PSI (Pounds per Square Inch): Most contractor compressors deliver 125-150 PSI, well above the 60-90 PSI that nailers and staplers require.
- Engine/Motor Type: Honda GX-series engines are the standard for gas portables, valued for reliable cold starting and field durability. Electric portables use standard induction motors on 115V.
- Weight: Hand carry gas: 50-90 pounds. Wheeled gas: 100-150 pounds. Electric portables: 80-120 pounds. Weight determines whether the compressor can be carried to rooftops and upper floors.
Brands Carried
- Jenny: The largest contractor compressor line on the site, with Honda-powered gas portables at 5.5 HP in wheeled and wheelbarrow configurations on 8 and 17 gallon tanks.
- Mi-T-M: Gasoline hand carry compressors at 4 HP and compressor/generator combos at 13 HP for crews needing air and electricity from one unit.
- Quincy: Honda-powered wheelbarrow contractor portables for rough-terrain job sites.
- C-Aire: Electric portable compressors on 115V for indoor jobsite and finish work.
- Industrial Gold: Compressor/generator and compressor/generator/welder combos from 13 HP for multi-function field use.
- EMAX: Combination air compressor/generator/welder units for contractors who need all three at remote sites.
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FAQ
What size compressor do I need for framing? A 5.5 HP gas portable on an 8-17 gallon tank covers most framing work. If two framers are nailing simultaneously, a 17 gallon tank provides a better air buffer than an 8 gallon. For crews running three or more nailers, consider stepping up to a larger construction portable or adding a second compressor.
What is the most common mistake when buying a contractor compressor? Choosing based on price alone without considering how much air you need to do the job. Purchasing by price can leave you unable to perform the tasks needed.
Can I use a contractor compressor for spray painting? Gas piston portables are not well-suited to production spray painting because their CFM output is intermittent and exhaust makes them outdoor-only.
What is a compressor/generator/welder combo? A single engine-driven unit that provides compressed air, AC electrical power, and a DC welding arc from one machine. These replace three separate tools at remote job sites and are popular with general contractors, fence builders, and mobile fabrication crews.
Should I choose a hand carry, wheeled, or wheelbarrow compressor? Hand carry for rooftops, upper floors, and tight access. Wheeled for truck bed to flat job site. Wheelbarrow for rough terrain, gravel, and unfinished ground.
Does CompressorPros offer free shipping on contractor compressors? Yes. Standard shipping is free, direct from the manufacturer, on every unit in this category.
Shop Contractor and Jobsite Air Compressors at CompressorPros
CompressorPros carries contractor air compressors from 1.5 HP electric portables to 14 HP gas-powered compressor/generator/welder combos in hand carry, wheeled, and wheelbarrow configurations. For roofing-specific options, browse the sub-category. For larger engine-driven rotary screw units, see construction portable and sand blasting air compressors. Standard shipping is free, direct from the manufacturer.
If you need help choosing a compressor for your crew, call (803) 339-0445 or email info@compressorpros.com.