Patented oil-free scroll technology solutions from Air Squared provide the fuel cell industry with the most advanced compressor or H2 recirculation pump available.

In 1999 Air Squared released its first scroll compressor specifically designed for fuel cell applications, the P32H58N2.25. Today, extensive development has given way to a full line of low-pressure, high-efficiency, oil-free scroll compressors for fuel cell applications, positioning Air Squared as the leader in compressor solutions for PEM fuel cell system.

Air Squared understands the potential of fuel cell technology to change the energy landscape and has spent over twenty years supporting the industry with the efficient and durable solutions.

Scroll Technology Advantages

Efficient Performance
Continuous compression process with no re-expansion or throttling losses
100% Oil-Free
Maintain the purity of your system with oil-free scroll technology
Reliable, Durable Solution
Long product life and simple field maintenance
Cost Competitive
Low-cost compressor configurations for OEMs
Quiet, Smooth Operation
Dynamically balanced, valve-less, and near pulsation-free

Fuel Cell Applications

  • PEM Fuel Cell
  • SOFC Fuel Cell
  • Hydrogen Recirculation
  • Material Handling
  • Hybrid Buses

Fuel Cell Products and Projects

Find your solution through a growing line of scroll compressor engineered specifically for fuel cell OEMs and view past development projects for fuel cell applications.

Fuel Cell + Scroll Technology Products

P22H060A-BLDC Orbital Series™ Scroll Compressor


Max Pressure: 1.6 barg Max Flow: 485 lpmv

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P24H056A-BLDC Scroll Compressor


Max Pressure: 1 barg Max Flow: 800 lpmv

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P27H069A-BLDC Orbital Series™ Scroll Compressor


Max Pressure: 1.2 barg Max Flow: 950 lpmv

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P34H080A-BLDC Scroll Compressor


Max Pressure: 1.8 barg Max Flow: 1850 lpmv

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Fuel Cell + Scroll Technology Projects

P38H083B-IND High-Flow, Oil-Free, Scroll Compressor

High-Flow, Oil-Free, Scroll Compressor for Hybrid Power Generation System

April 02, 2020

Designed as part of a five-organization partnership under the ARPA-e INTEGRATE program, the P38H083B-IND delivers contaminate-free air to a solid oxide fuel cell (SOFC) that is at the heart of a hybrid power generation system under development by Colorado School of Mines. The novel power generation system combines an intermediate-temperature SOFC, custom internal combustion engine, […]

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P13H032A-BLDC-SH Scroll Hydrogen Recirculation Pump

High-Temperature Hydrogen Recirculation Pump for Fuel Cell

January 08, 2020

State-of-the-art fuel cell stacks run most efficiently on pure hydrogen (H2); however, clean supply is often economically prohibitive. To solve this, the Department of Energy has invested in several pilot projects to accelerate the development of on-demand electrolysis H2 fuel separation from humid mixed-gas streams, including natural gas (CH4), syngas, and others for direct use […]

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P26H052A-BLDC-SH Corrosion-Resistant Scroll Hydrogen Blower

Corrosion-Resistant Scroll Hydrogen Blower

November 08, 2017

Alkaline Fuel Cells (AFC) are more efficient than Proton Exchange Membrane Fuel Cells (PEM) but use alkaline electrolytes that are difficult for standard pumping technologies because of their corrosive properties. Very few efficient, oil-free, and corrosion-resistant pumping options exist for this technology, and none are sized specifically for the needs of Alkaline Fuel Cells. Air […]

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P34H080A-BLDC Scroll Compressor

High-Capacity Scroll Compressor for Fuel Cell Applications

November 09, 2016

Growing in unison with the international alternative energy industry, Air Squared has become the transportation fuel cell standard through the development of their largest production scroll compressor, the P34H080A-BLDC. Capable of delivering up to 1,850 lpmv, the P34H080A-BLDC provides reliable oil-free air for transportation fuel cell stacks. Design Specifications Discharge Pressure: 1.8 barg Max Volume […]

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P32H076A-BLDC-LC Liquid-Cooled Scroll Compressor for Fuel Cell

Liquid-Cooled Scroll Compressor with Integrated Motor for Fuel Cell Vehicles

January 22, 2016

Fuel cell applications require oil-free air to prevent contamination of the fuel cell stack. When a major automotive company approached Air Squared in search of an oil-free air compressor, they knew they would find the compact, reliable, efficient, and oil-free product needed for a fuel cell-powered vehicle. Providing 700 SLPM of air at 3 barg, […]

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Spinning Scroll Compressor for H2 Recirculation

April 03, 2014

The P21H050A-BLDC-SH-SS is designed to boost 180 ºC, 100% humid hydrogen from 20 bara to 20.5 bara. Used to recirculate high-temperature hydrogen for a solid oxide fuel cell (SOFC) system in a weight-sensitive aerospace application, this innovative spinning scroll compressor provides 375 lpmv of hydrogen to the anode side of the SOFC in a package […]

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Lightweight, Compact, Oil-free Scroll Compressor

February 07, 2013

Developed for mobile applications, the oil-free P24H056A-BLDC features a compact and lightweight design, capable of delivering up to 600 lpmv of air at 0.7 barg. The unit is ideal for mobile fuel cell and medical applications. The efficient compressor employs a traditional orbiting scroll design, but can operate at speeds over 4,000 RPM. While most […]

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Fuel Cell Hydrogen Recirculation Pump

November 01, 2011

Weighing just 2.2 kg, the compact P16H034C-BLDC-SH delivers 100 lpm of hydrogen, with a 0.25 bard pressure rise. The semi-hermetic unit is designed to recirculate humidified hydrogen in fuel-cell-powered fork lifts. The goal of the project was to develop a semi-hermetic hydrogen pump that offers improved reliability and efficiency over diaphragm pumps currently used in […]

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Stainless Recirculation Pump

Stainless O2 and H2 Recirculation Pump

March 14, 2010

The stainless steel hydrogen and oxygen recirculation pump was developed for Lockheed Martin’s ISIS program as part of the on-board fuel cell system. Excess electricity provided by the photovoltaic cells during the day is used to convert water into oxygen and hydrogen, which is used by the fuel cell system to power the dirigible during […]

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Fuel Cell + Scroll Technology Articles

Fuel Cell + Scroll Technology News

Hannover Messe Logo

Hannover Messe 2021

April 21, 2020

Monday, April 12th – Friday, April 16th, 2021 At The Hannover Fairgrounds, Laatzen, Germany In April 2021, Air Squared will exhibit alongside over 150 companies and institutions from 25 different countries at Europe’s largest and most important fuel cell exhibition – Hydrogen + Fuel Cells Group Exhibit at Hannover Messse. The Group Exhibit is the […]

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High-Capacity Scroll Compressor Concept Rendering for INTEGRATE Program

Air Squared Part of Cross-Industry Collaboration Developing Hybrid Power Generation System

November 09, 2018

Broomfield, CO – A collaboration between Colorado School of Mines, Colorado State University, Kohler Power Systems, and Air Squared, has been awarded $3 million in funding from the Advanced Research Projects Agency-Energy (ARPA-E) to develop a novel hybrid power generation system. Led by Professor Rob Braun at Colorado School of Mines, the team is one […]

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Hannover Messe

Hannover Messe 2016

February 01, 2016

Monday, April 25 – Friday, April 29, 2016 At The Hannover Messe Fairgrounds, Laatzen, Germany In April 2016, Air Squared will exhibit alongside over 150 companies and institutions from 25 different countries, showcasing a full line of scroll compressors and hydrogen recirculation pumps at Europe’s largest and most important fuel cell exhibition – Hydrogen + […]

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Hannover Messe

Hannover Messe 2015

March 06, 2015

The 21st Hydrogen, Fuel Cells, and Batteries Group Exhibit at HANNOVER MESSE 2015.

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Hannover Messe

Hannover Messe 2014

March 06, 2014

Air Squared, Inc. joins Europe’s largest and most important fuel cell exhibition – The 20th Hydrogen + Fuel Cell + Battery Group Exhibit at HANNOVER MESSE 2014.

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H2+FC 2013 at Hannover Messe

November 19, 2012

The 19th Group Exhibit Hydrogen + Fuel Cells at HANNOVER MESSE 2013.

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2012 Fuel Cell Seminar and Exposition

2012 Fuel Cell Seminar & Exposition

October 09, 2012

Air Squared, Inc. joins fuel cell industry leaders at the 2012 Fuel Cell Seminar & Exposition.

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Plug Power Places Large Production Order

October 27, 2011

Plug Power places large production order for Air Squared compressors used in GenDrive fuel cell units.

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Fuel Cell

Development for Fuel Cell Recirculation Pumps

August 12, 2011

High-reliability oxygen and hydrogen fuel cell recirculation pumps for a lighter-than-air aircraft application.

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Custom Scroll Design

Contact Air Squared to learn how custom scroll design can support medical applications with the most advanced compressor and vacuum pump solution available.

Advanced Custom Design Capability for Fuel Cell Applications

For over twenty-five years, Air Squared has continuously challenged the limits of possibility with scroll technology. With an ever-expanding range of custom design capability, put our long history of innovation to work in your next fuel cell application.

Oil-Free Scroll Design

Orbiting scroll technology offers a quiet oil-free alternative to traditional technology like piston, diaphragm, and vain.


When minimal power consumption is critical, leverage the inherent efficiency advantage of orbiting and spinning scroll technology.

Gases other than Air

With several patented semi-hermetic configurations, scroll compressors and vacuum pumps can be used for far more than moving air.

Compact Footprint

Unique staged configurations allow scroll compressors and vacuum pumps to fit in small space envelope without sacrificing performance.

Elevated Temperatures

Using patented liquid-cooled scroll technology and stainless steel or other alloys, solutions can be designed to withstand harsh temperatures and environmental conditions.


With patented liquid-cooled scroll technology, scroll compressors can now be designed for pressure ratios that were previously unattainable.