HDI Air Pak
Hydraulic all in one unit for work trucks: air compressor, battery assist, aux power, welding.
HDI™ Air Pak™
Stop wasting payload on separate compressor and engine-driven welder units. Simplify your job and fleet with the all-in-one Miller® HDI™ Air Pak™ series. Maximize payload, save space and get more done with a single hydraulically driven unit.
Explore the Series
It's Time to Raise Your Standard
Stop wasting payload with a standalone compressor and engine-driven welder — simplify your job and fleet with the hydraulically driven all-in-one Miller® HDI™ Air Pak™ series. Maximize payload, save space and get more done in a single unit.
Simplify Your Fleet With the HDI™ Air Pak™ Series
Make Way for More Room on Your Truck
Drag the slider to see how the HDI Air Pak maximizes payload and saves space on your truck.
Powerful Capabilities
Compressed Air
Rotary-screw compressor with 40 cfm (265 model) or 60 cfm (325 model) provides air on demand.
Battery Charge / Crank Assist
Up to 150 amps of DC power for 12/24V battery charging. Up to 300 amps for crank assist.
Auxiliary Power
7,000-watt generator can handle most jobsite electrical needs to power electric tools, lights and more.
Integrated Multiprocess Welding
Provides 265 amps (265 model) or 325 amps (325 model) of output.
Key Benefits
The Only Hydraulically Driven Power System You and Your Technicians Need
The HDI™ Air Pak™ all-in-one solutions do the work of two machines and are designed with industry-leading technologies to provide the reliability and support you need on the job, while reducing payload for increased capabilities.
Smaller and Lighter
Up to 400 pounds lighter and 54 percent smaller footprint over an engine-driven welder and standalone compressor.
Industry-Leading Weld Quality
Best-in-class welding performance, reliability and support.
Auto-Set™ Technology
Predefined weld settings make welding straightforward and accurate for technicians.
Simple Setup
Save time with a single, easy-to-use interface for air compressor, battery charge/crank assist and weld parameter settings.
Modular Remote Panels
Individual panels allow for customized setup for quick, easy access and reduced risk of injuries from climbing onto the truck.
Quieter Operation
Reduced sound levels lessen noise fatigue on the jobsite.