Nitrogen & Oxygen Gas Generators

Since 1966, Pneumatech has provided industry-leading compressed air treatment and on-site gas generation solutions to customers across the globe. Our on-site nitrogen and oxygen generators provide you with premium, industrial gas without the cumbersome handling of bottles, cost-efficient, easy and at the purity level required by you.


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Onsite gas generation tailored to your needs

Experience top-notch on-site nitrogen and oxygen generation in New Zealand with our advanced Pneumatech N2 and O2 gas systems. Say goodbye to the hassle of handling gas bottles, enjoy cost-effective solutions, and ensure the purity levels tailored to your specific needs in the industrial sector.

Talk to our team today about nitrogen and oxygen gas generators Talk to our team today about nitrogen and oxygen gas generators

Nitrogen Generators:

 Empower your operations with the intelligent choice of producing nitrogen on-site. Opting for an on-site nitrogen generator in New Zealand is a superior, cost-efficient, and sustainable alternative to traditional gas deliveries. Switch from Liquid Nitrogen to On-Site Generation and Cut Your Operating Cost Down.

Oxygen Generators:

Experience the cutting-edge on-site oxygen generation offered by Pneumatech, a leading air treatment and gas generation expert, proudly presented by Ash Air in New Zealand. Utilizing advanced zeolite technology, our oxygen generators efficiently separate gases, ensuring purity levels of up to 95%. From compressed air applications to critical environments like veterinary clinics and medical facilities, our machines deliver unparalleled performance. Elevate your business with a dependable O2 supply, reduce costs, and enhance operational excellence through Pneumatech's expertise, products, and services. Discover the seamless synergy of cutting-edge oxygen solutions for optimal reliability and efficiency, exclusively offered by Ash Air in New Zealand.

Explore our Industrial Gases Selection

Browse our online catalogue and discover Pneumatech Nitrogen and Oxygen Generators  for sale in New Zealand. We're excited to offer only the best on the market in NZ. Get in touch today and learn why Ash Air have over 40 years in the business, with thousands of happy customers throughout the country.

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Air Compressors & Treatment

From powerful rotary screw compressors to reliable piston air compressors, we offer a comprehensive range. Explore top-quality air compressors and treatment solutions in New Zealand with Alup and Chicago Pneumatic. Enhance your compressed air system with our refrigerated and desiccant air dryers. Trust us for sales and service of premium air compressors in NZ.

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Vacuum Pumps & Blowers

The team at Ash Air has an extensive range of top quality vacuum pumps and equipment, including rotary vane pumps, liquid ring pumps, claw pumps and screw pumps that are low maintenance, energy-efficient, reliable, affordable and hard working.

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Nitrogen & Oxygen Gas Generators

Our nitrogen gas generators offer excellent all-in-one solutions, with technologically-advanced systems, are very convenient, space saving and easy to install. Our nitrogen generators have impressive control and monitoring capabilities with very reliable purity settings and long-lasting membrane technology.

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SpiralAIR SPR 20 Multi Oil-free (8 bar version)

SpiralAIR SPR 20 Multi Oil-free (8 bar version)

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SpiralAIR SPR 8 Oil-free (8 bar version)

SpiralAIR SPR 8 Oil-free (8 bar version)

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SprialAIR Scroll Compressors SPR 2-30 Series

SprialAIR Scroll Compressors SPR 2-30 Series

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WISAIR 20V - 75V Oil-Free Screw Compressor - Inverter Version

WISAIR 20V - 75V Oil-Free Screw Compressor - Inverter Version

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WISAIR 40 - 75 Oil-Free Screw Compressor - Fixed Speed Version

WISAIR 40 - 75 Oil-Free Screw Compressor - Fixed Speed Version

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Chicago Pneumatic CPM 5.5 Oil Injected Screw Compressor with 200L Receiver + Dryer

Chicago Pneumatic CPM 5.5 Oil Injected Screw Compressor with 200L Receiver + Dryer

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Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 1402 - 2002 VSD+ Series

Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 1402 - 2002 VSD+ Series

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Chicago Pneumatic CPM 9 M Oil Injected Screw Compressor with 200L Receiver + Dryer

Chicago Pneumatic CPM 9 M Oil Injected Screw Compressor with 200L Receiver + Dryer

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Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 3800 - 5400 VSD+ Series

Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 3800 - 5400 VSD+ Series

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Chicago Pneumatic CPA 10 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

Chicago Pneumatic CPA 10 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

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Chicago Pneumatic CPA 15 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

Chicago Pneumatic CPA 15 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

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Chicago Pneumatic CPA 20 Oil Injected Screw Compressor with 500L Receiver + Dryer (8 bar version)

Chicago Pneumatic CPA 20 Oil Injected Screw Compressor with 500L Receiver + Dryer (8 bar version)

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Chicago Pneumatic CPBg 29 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

Chicago Pneumatic CPBg 29 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

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Chicago Pneumatic CPBg 40 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

Chicago Pneumatic CPBg 40 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

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CPBg 50 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions avaliable

CPBg 50 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions avaliable

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Our Resources

We're committed to offering our customers an extensive range of knowledge-based resources to support you at every stage of your journey. Whether you're just starting your research or making your final purchasing decision, Ash Air is here to support you. 


Contact Us Contact Us Ash Air Expert Corner Blog Ash Air Expert Corner Blog Our News and Stories Our News and Stories

Read our blog


Choosing the right assist gas in laser cutting: nitrogen or oxygen


Controlling your nitrogen purity made easy


How is Nitrogen Used in the Coffee Industry?


Our customers say...



"At Fisher & Paykel Appliances, compressed air and vacuum systems are an important part of our operations. Ash Air understands our needs and can solve our problems very swiftly. They have maintained our systems to a high standard. The service and support from Ash Air over the years has proven to be reliable, professional and genuine. They are highly skilled real people and we are happy to be working with them."

Shane Farrington Engineering Manager, Fisher & Paykel Appliances



"Ash Air has been pivotal in assisting Air New Zealand Engineering in our energy saving efforts. They provide us with constant improvement programs that include high quality equipment & service, Air Quality Testing, Leak Detection & Repairs and point of use improvements. Air New Zealand Engineering do our best in servicing large jet airframes and Ash Air has always been there to support our compressed air efficiency requirements." 
Harvey Roberts Senior Facilities Manager Property & Infrastructure, Auckland Jet Base, Air New Zealand Engineering

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