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Fulfilling a vital role in a compressed air system, a refrigerant dryer cools the compressed air to allow water vapour to condense and then be separated. Clean and dry compressed air helps make sure a system is never compromised. Furthermore, with many modern production systems and processes demanding high quality compressed air, in accordance with the air quality classes defined in ISO8573-1:2010, refrigerant dryers have a critical role to play in achieving this.

This is true for all manufacturers, where production uptime is critical for profitable and trouble-free operations. Companies will often need to adhere to strict compressed air guidelines and legislation, and therefore cannot afford to deal with corrosion and its impact on efficiency levels in air distribution systems, as well as the potential contamination of goods on production lines. To meet this need, Gardner Denver has launched its new GDD refrigerant dryer range, offering air flow rates of to 384 m3/min, the GDD refrigerated dryer range is one range for all applications. These units provide a small footprint with complete, affordable solutions for applications ranging from dry cleaning to automotive body shops, to light processing and manufacturing applications.

The high capacity units are designed for large-scale industrial, automotive and petrochemical applications.

Energy Saving Potential with Cycling Dryers

For Gardner Denver, quality and efficiency is just as important for compressed air treatment as it is for compressed air generation. With the cost of electricity being so high, any technology which can reduce the amount of power needed by the air dryer is essential. Gardner Denver has developed a range of different dryer technologies, refrigerant, sub freezing and absorption (or desiccant) dryers which can give energy savings depending on the process the air is serving.

Our range of cycling dryers shut off the refrigerant compressor during low loads, which dramatically reduces energy consumption as shown in the graph below. Using environmentally-friendly R513A, R407C refrigerants with the lowest Global Warming Potential, also contributes to reducing greenhouse gas emissions.

energy saving graph cycling dryers

Optimised, Eco‑Efficient Air Treatment for a Sustainable Future

The GDD‑VS Variable Speed Refrigeration Dryers deliver next‑generation energy efficiency by combining advanced inverter‑driven variable‑speed technology with an eco‑friendly, low‑GWP R513A refrigerant to significantly reduce operating costs and environmental impact.  Their intelligent DMC55 controller ensures stable dew‑point performance, adapts compressor and fan speed to real‑time thermal loads, and offers multiple operating modes—including ECO, ECO PLUS, and Automatic Optimised Dew‑Point Management—for maximum efficiency under all conditions.  With a robust ALU‑DRY heat exchanger, an electronic zero‑loss drain, and an EHGBV electronic hot gas bypass valve enabling both cycling and no‑cycling operation, the GDD‑VS range provides exceptional reliability, energy savings, and performance consistency across diverse industrial environments.

Variable Speed Dryer left angle