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Auxiliary Power Units



Powering Aircraft on the Ground

A market leader with over 50 years’ experience and more than 100,000 gas turbine Auxiliary Power Units (APUs) produced, we proudly offer proven products to power regional, executive, commercial and military applications, including both fixed wing and rotary wing.

Explore Our Products

Auxiliary Power Units

Our Auxiliary Power Units provide the power necessary to keep a variety of aircraft systems running smoothly. Whether it's temperature control in the cabin, providing strength to engine starters, or powering electronics and lighting in the cockpit, our Auxiliary Power Units are relied upon in short-range, long-range and military applications.

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Supported Industries

See why Honeywell is the go-to choice for industry-leading solutions.

Airlines & Cargo
With more than 150 applications, our Auxiliary Power Units support the operational needs of commercial aircraft as well as those of military operations of all sizes.
Business Aviation
Our Auxiliary Power Units are relied upon within the private jet industry, as well as the helicopter industry, getting people where they need to be with adequate power solutions.
Defense
Both fixed-wing and rotary-wing needs are met with our Auxiliary Power Units, giving miliary units confidence their aircraft are always deployment-ready with the latest technology in place.
Helicopters
Our Auxiliary Power Units power various helicopter operations on aircraft of different sizes. No matter the goal, business or military, our APUs ensure your machines are running efficiently.
UAVs and Urban Air Mobility
Our Auxiliary Power Units provide power for efficient aviation, supporting urban air taxi travel, drone delivery of parcels, and all forms of electric and autonomous flight.

Thought Leadership

Expert Insights for All Your Aerospace Needs.

PRODUCT
APU to Save Fuel and Time
Airbus narrow-body operators using Honeywell’s 131-9A APU can save up to $11,000 in annual fuel costs and improve on-wing-time by as much as 17%.
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BLOG
The Green APU
We’re working to modify our APUs to operate on sustainable aviation fuel (SAF), reducing greenhouse gas emissions by up to 80%.
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BLOG
All About High-Efficiency Mode
The High Efficiency Mode (HEM) upgrade for the 131-9A APU for Airbus Single Aisle aircraft puts out more power with less fuel.
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News

Stay up to date on what’s happening with Honeywell.

News
Our APU Is Aboard the DEFIANT-X
Our APU has been selected for the DEFIANT X® helicopter, a contender in the U.S. Army’s Future Long-Range Assault Aircraft (FLRAA) competition.
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News
Our APU Flies On The Redesigned B-52
Boeing has selected our proven 36-150 APU to upgrade the B-52 as part of the bomber’s Commercial Engine Replacement Program (CERP).
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News
Ameco Expands Repair Capabilities
Honeywell authorizes AMECO to repair our APUs on Air China’s A350 fleet, including an agreement to supply parts and materials.
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NEWS
Our Avionics Power the New Falcon 10X
Honeywell’s advanced flight deck technologies will bring a user-friendly touch screen experience for future pilots of the long-range Falcon 10X.
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Speak To Our Experts

Our Aerospace experts can customize solutions based on your individual or business needs.