--- title: Refrigerated & Desiccant Air Dryers | Industrial Air Systems description: PneuTech refrigerated and dessicant air dryers can produce high quality, dry compressed air, for a variety of industries. --- - [**](https://www.facebook.com/Industrial-Air-Systems-NZ-Ltd-1935101686744916/) - [**](https://twitter.com/IndustrialAirNZ) - [**](https://www.youtube.com/channel/UCk7XQ0Jjoxj1G0MMEQ7Idqg) - [**](https://www.linkedin.com/company/industrial-air-systems-nz-ltd/) - ** [Freephone: 0800 555 018 ](tel:0800555018) - ** [Enquire now](https://www.industrialair.co.nz/contact-us) [![IAS x ISO Logo](https://www.industrialair.co.nz/hubfs/IAS%20x%20ISO%20Logo.png) ](https://www.industrialair.co.nz/) ![Air dryer - image 1](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%206.jpg) ![Air dryer - image 2](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%203.jpg) ![Air dryer - image 3](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%205.jpg) ![Air dryer - image 4](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%202.jpg) ![Air dryer - image 5](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%204.jpg) ![Air dryer - image 6](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%209.jpg) ![Air dryer project](https://www.industrialair.co.nz/hubfs/Gallery%20images/ias_integrated_compressor_dryer_1.jpeg) ![Industrial Air Systems air dryer](https://www.industrialair.co.nz/hubfs/Gallery%20images/ias_nitropak_2.png) ![Air dryer - image 1](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%206.jpg) ![Air dryer - image 2](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%203.jpg) ![Air dryer - image 3](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%205.jpg) ![Air dryer - image 4](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%202.jpg) ![Air dryer - image 5](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%204.jpg) ![Air dryer - image 6](https://www.industrialair.co.nz/hubfs/Product%20page%20images/dryer%20-%209.jpg) ![Air dryer project](https://www.industrialair.co.nz/hubfs/Gallery%20images/ias_integrated_compressor_dryer_1.jpeg) ![Industrial Air Systems air dryer](https://www.industrialair.co.nz/hubfs/Gallery%20images/ias_nitropak_2.png) # Air Dryers With the introduction of today’s high-tech spray coatings, sophisticated CNC operated machinery and high productivity requirements, the compressed air supply line needs to be free of moisture contamination. Correct filtration will remove contaminants, but will not entirely eliminate the moisture problem – this can be achieved by installing an air dryer.   Enquire about this product ## Product Enquiry Refrigerated Dryers + ## Refrigerated dryers With an ambient temperature capacity of 5 to 50°C, the PneuTech PDR refrigerated dryers can perform in extreme temperatures and high humidity to produce 99% moisture-free compressed air every time.  With a generously spaced cabinet and oversized components such as the heat exchanger, cooling fan and industrial compressor, the PDR dryer is designed for optimum performance whilst providing low-cost operation.  Special features such as the stainless steel heat exchanger (models up to 141cm), low energy requirement and low maintenance costs, make the PneuTech refrigerated dryer the number one choice in every industrial compressed air situation, where long term and reliably dry air is critical. For more information on the range of dryers available, [download our free brochure](https://www.industrialair.co.nz/compressed-air-treatment-brochure). Desiccant Dryers + ## Desiccant Dryers PneuTech adsorption dryers totally clean and dry compressed air down to -40°C pressure dew-point as standard. For critical applications, adsorption dryers can be specified to provide a pressure dew-point of -70°C. A pressure dew-point of -26°C or better will not only prevent corrosion but will also inhibit the growth of micro-organisms within the compressed air system – critical to some applications. While adsorption dryers guarantee a very safe and dry compressed air supply, the process does account for some pressure drop in the compressed air supply, which in turn requires greater air pressure input and thus higher energy costs. The PneuTech adsorption dryers incorporate specially designed and matched components working in synergy to produce optimum air flow rates with minimal pressure drop, averaging only 0.35bar including pre and after filters. This minimal pressure drop constitutes 50% less energy consumption over conventional adsorption dryers, leading to huge electrical savings every year. For more information on the range of dryers available, [download our free brochure](https://www.industrialair.co.nz/compressed-air-treatment-brochure). Dryer FAQs + How do refrigerated dryers work? A refrigerated dryer processes hot, moisture-laden air from the compressor, down to the dew-point temperature (3°C) in three stages - firstly through a heat exchanger, then through a refrigerant/air exchanger, which brings it down to dew-point, at which point the oil and water vapour condense into a droplet form and are drained off. The cold air then re-enters the heat exchanger and is reheated to normal working temperature. How do desiccant dryers work? PneuTech cold refrigerated desiccant dryers operate on the PSA (pressure swing adsorption) principle. Two drying towers filled with a powerful hygroscopic drying agent operate in conjunction to eliminate water particles from the compressed air supply down to a pre-set dew-point level. While one tower is drying the compressed air, the other tower is regenerating the drying agent, allowing for a continual, reliable supply of moisture-free air, through this cycling process. What is required for servicing a dryer? Refrigerated dryers typically require very little servicing outside cleaning the condenser (recommended yearly) and checking drains are working correctly. Filtration attached to the refrigerated dryer as part of the compressed air set-up should have the elements changed a minimum of 12 monthly – more frequent replacement may be required for high usage. Desiccant dryers also incorporate pre and after-filters, and these should be changed at minimum in 12-month intervals, or more frequently for high-running hours. The desiccant inside the dryer should be serviced at 24-month intervals or earlier if indicated by the inbuilt sensors. Learn more about the different dryers available and find product specifications in the free brochure [here](https://www.industrialair.co.nz/compressed-air-treatment-brochure). ## Refrigerated dryers With an ambient temperature capacity of 5 to 50°C, the PneuTech PDR refrigerated dryers can perform in extreme temperatures and high humidity to produce 99% moisture-free compressed air every time.  With a generously spaced cabinet and oversized components such as the heat exchanger, cooling fan and industrial compressor, the PDR dryer is designed for optimum performance whilst providing low-cost operation.  Special features such as the stainless steel heat exchanger (models up to 141cm), low energy requirement and low maintenance costs, make the PneuTech refrigerated dryer the number one choice in every industrial compressed air situation, where long term and reliably dry air is critical. For more information on the range of dryers available, [download our free brochure](https://www.industrialair.co.nz/compressed-air-treatment-brochure). ## Desiccant Dryers PneuTech adsorption dryers totally clean and dry compressed air down to -40°C pressure dew-point as standard. For critical applications, adsorption dryers can be specified to provide a pressure dew-point of -70°C. A pressure dew-point of -26°C or better will not only prevent corrosion but will also inhibit the growth of micro-organisms within the compressed air system – critical to some applications. While adsorption dryers guarantee a very safe and dry compressed air supply, the process does account for some pressure drop in the compressed air supply, which in turn requires greater air pressure input and thus higher energy costs. The PneuTech adsorption dryers incorporate specially designed and matched components working in synergy to produce optimum air flow rates with minimal pressure drop, averaging only 0.35bar including pre and after filters. This minimal pressure drop constitutes 50% less energy consumption over conventional adsorption dryers, leading to huge electrical savings every year. For more information on the range of dryers available, [download our free brochure](https://www.industrialair.co.nz/compressed-air-treatment-brochure). How do refrigerated dryers work? A refrigerated dryer processes hot, moisture-laden air from the compressor, down to the dew-point temperature (3°C) in three stages - firstly through a heat exchanger, then through a refrigerant/air exchanger, which brings it down to dew-point, at which point the oil and water vapour condense into a droplet form and are drained off. The cold air then re-enters the heat exchanger and is reheated to normal working temperature. How do desiccant dryers work? PneuTech cold refrigerated desiccant dryers operate on the PSA (pressure swing adsorption) principle. Two drying towers filled with a powerful hygroscopic drying agent operate in conjunction to eliminate water particles from the compressed air supply down to a pre-set dew-point level. While one tower is drying the compressed air, the other tower is regenerating the drying agent, allowing for a continual, reliable supply of moisture-free air, through this cycling process. What is required for servicing a dryer? Refrigerated dryers typically require very little servicing outside cleaning the condenser (recommended yearly) and checking drains are working correctly. Filtration attached to the refrigerated dryer as part of the compressed air set-up should have the elements changed a minimum of 12 monthly – more frequent replacement may be required for high usage. Desiccant dryers also incorporate pre and after-filters, and these should be changed at minimum in 12-month intervals, or more frequently for high-running hours. The desiccant inside the dryer should be serviced at 24-month intervals or earlier if indicated by the inbuilt sensors. Learn more about the different dryers available and find product specifications in the free brochure [here](https://www.industrialair.co.nz/compressed-air-treatment-brochure). [![Learn about our range of compressed air treatment products. Download the brochure](https://hubspot-no-cache-ap1-prod.s3.amazonaws.com/cta/default/6157760/79e12662-d88a-4c4c-9506-37388c3fe39b.png)](https://hubspot-cta-redirect-ap1-prod.s3.amazonaws.com/cta/redirect/6157760/79e12662-d88a-4c4c-9506-37388c3fe39b) [![Go back to air treatment page](https://hubspot-no-cache-ap1-prod.s3.amazonaws.com/cta/default/6157760/1d8fbf52-6905-474f-b4a5-ba25f041e612.png)](https://hubspot-cta-redirect-ap1-prod.s3.amazonaws.com/cta/redirect/6157760/1d8fbf52-6905-474f-b4a5-ba25f041e612) ## Industrial Air Systems Projects --- ![Orams Marine project](https://www.industrialair.co.nz/hubfs/ias_case_study_orams_marine.png) [View case study](https://www.industrialair.co.nz/our-case-studies/turnkey-compressor) ### Turnkey compressor for superyacht servicing ![Gloss Boats project](https://www.industrialair.co.nz/hubfs/ias_case_study_gloss_boats_banner.png) [View case study](https://www.industrialair.co.nz/our-case-studies/marine-spraying-auckland) ### Compressed air system for Auckland marine spraying specialists ![Pegasus Engineering project](https://www.industrialair.co.nz/hubfs/ias_banner_pegasus_engineering_case_study-1.png) [View case study](https://www.industrialair.co.nz/our-case-studies/engineering-company) ### Compressed air system for an engineering project ![Harrows Furniture project](https://www.industrialair.co.nz/hubfs/ias_case_study_harrows_table_chairs.png) [View case study](https://www.industrialair.co.nz/our-case-studies/harrows) ### A new compressed air system for Harrows Furniture [View more projects](https://www.industrialair.co.nz/our-case-studies) Excellent service. Your guys have all been very, very good. You were willing to work around our production needs and come out in the middle of the night to get amongst the rats! ### Rodney, CID Resource Recovery We’ve been staying with these guys because they have the right skills and experience. ### Joe, Ritchies Top-rate service. I would recommend your company. I hope we get Paul every time! ### Ian, Agvance We had an issue with the compressor which these guys fixed. We’re very pleased with Industrial Air Systems. They reacted quickly, kept the unit running while a part was sourced and then fixed it quickly. When we’re looking at any upgrades Industrial Air Systems will be our first port of call. ### Nigel, SAS You ticked all the boxes. Your guys were great. You come in, do the job and leave a pack of biscuits! ### Reuben, Oceania Meat Processors Paul has done a very nice job installing the pipework, it looks awesome. I’m glad that you recommended the aluminium pipe. ### Steve, Straight-N-Paint We have found Industrial Air Systems very good to deal with and very professional. Good service at a good price. I would not hesitate to recommend Industrial Air Systems to any company considering using them. ### Maintenance Manager, McCains Foods, Hastings [Your tech] is a great guy to work with, he has great knowledge with all the gear and is always there when we need him. All the guys here at VIP love working with him. ### Operations Manager, VIP Steel Christchurch We have had a good experience working with Industrial Air Systems – they are easy to do business with and we have no hesitation recommending them to companies wanting an efficient and economical supply for compressed air. ### Mike (General Manager), National Springs & Wire Products NZ Ltd We have found their service team very responsive and excellent to work with, and from our good experience we would recommend Industrial Air Systems to any company requiring compressed air in the future. ### Peter (Operations Manager), Allegion We are very happy with the airlines and the setup. The whole process was easy and we received great communication from you and the team. Your contractor was also great to deal with and did a very tidy job of the install. ### Eddie (Operations Manager), Zenitec ![Industrial Air Systems](https://www.industrialair.co.nz/hubfs/Industrial_Air_Systems_November2019/Images/industrialair-footer-logo.png) We are committed to helping businesses maximise their productivity, save on operating expenses and become a positive contributor to the environment. [**](https://www.facebook.com/Industrial-Air-Systems-NZ-Ltd-1935101686744916/) [**](https://www.youtube.com/channel/UCk7XQ0Jjoxj1G0MMEQ7Idqg) [**](https://www.linkedin.com/company/industrial-air-systems-nz-ltd/) ### From the blog ### Case Studies [![Kereru Brewing - Case study](https://www.industrialair.co.nz/hubfs/insta%20size%20squoosh.jpg) ](https://www.industrialair.co.nz/our-case-studies/kereru-brewing) [![Nitropak nitrogen generator for Autobend](https://www.industrialair.co.nz/hubfs/Case%20Studies/Autobend%20Nitrogen%20Generator/Compressed/ias_autobend_1.jpg) ](https://www.industrialair.co.nz/our-case-studies/autobend) [![Fabriweld Nitropak project](https://www.industrialair.co.nz/hubfs/Fabriweld%20pics/Project%20images/Fabriweld%20project%20(3).jpg) ](https://www.industrialair.co.nz/our-case-studies/fabriweld) [![industrial air compressor and nitrogen generator](https://www.industrialair.co.nz/hubfs/Mid%20section%20of%20bartender%20pouring%20beer%20on%20glass%20in%20bar%20counter.jpeg) ](https://www.industrialair.co.nz/our-case-studies/clayton-hops) [![Turnkey compressor for Orams Marine](https://www.industrialair.co.nz/hubfs/ias_case_study_orams_marine.png) ](https://www.industrialair.co.nz/our-case-studies/turnkey-compressor) [![Air-assist compressor for laser cutting machine](https://www.industrialair.co.nz/hubfs/ias_case_study_priest_sheetmetal.png) ](https://www.industrialair.co.nz/our-case-studies/compressor-laser-cutting) [![South Canterbury Hydraulics case study](https://www.industrialair.co.nz/hubfs/ias_case_study_sch_banner_edited.png) ](https://www.industrialair.co.nz/our-case-studies/new-hydraulic-premises) [![Compressor system for marine spraying specialists](https://www.industrialair.co.nz/hubfs/ias_case_study_gloss_boats_banner.png) ](https://www.industrialair.co.nz/our-case-studies/marine-spraying-auckland) [![Engineering company project](https://www.industrialair.co.nz/hubfs/ias_banner_pegasus_engineering_case_study-1.png) ](https://www.industrialair.co.nz/our-case-studies/engineering-company) [![Nitrogen generation project](https://www.industrialair.co.nz/hubfs/ias_case_study_Nitropak_5-1.jpg) ](https://www.industrialair.co.nz/our-case-studies/nitrogen-generation) [![Plastic manufacturer project](https://www.industrialair.co.nz/hubfs/ias_case_study_hawkes_bay_feature_img-1.png) ](https://www.industrialair.co.nz/our-case-studies/plastic-packaging) [![Harrows Furniture project](https://www.industrialair.co.nz/hubfs/ias_case_study_harrows_table_chairs.png) ](https://www.industrialair.co.nz/our-case-studies/harrows) [![Project for Auckland poultry processor](https://www.industrialair.co.nz/hubfs/poultry_2.png) ](https://www.industrialair.co.nz/our-case-studies/poultry-auckland) [![Project for Christchurch poultry processor](https://www.industrialair.co.nz/hubfs/poultry_1.png) ](https://www.industrialair.co.nz/our-case-studies/poultry-christchurch) [![Compressed air project for a Wellington engineering company](https://www.industrialair.co.nz/hubfs/Industrial_Air_Systems_November2019/Images/pipes-1280.jpeg) ](https://www.industrialair.co.nz/our-case-studies/engineering-wellington) [![Compressed air project for a Christchurch engineering company](https://www.industrialair.co.nz/hubfs/Industrial_Air_Systems_November2019/Images/cutting-laser-1280.jpeg) ](https://www.industrialair.co.nz/our-case-studies/engineering-christchurch) [![Project for structural steel manufacturer](https://www.industrialair.co.nz/hubfs/Industrial_Air_Systems_November2019/Images/structure-body.jpg) ](https://www.industrialair.co.nz/our-case-studies/steel-manufacturer) ### Industrial Air Newsletter Want to receive helpful tips and the latest promotions? 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