Güntner Gas Cooler Horizontal Vario

40 - 1450 kW

FLAT Vario

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Info Operation and installation instructions


  • Condensating of gases
  • Process Cooling
  • Gas Cooling


Güntner Gas Cooler Horizontal Vario


Robust and variable

Güntner specialises in air-cooled condensers and dry coolers for all the usual media. Our FLAT and VERTICAL series have proved particularly popular and are continually being improved.

These extremely versatile units are available in horizontal or vertical design. Using the Güntner Product Calculator GPC you can quickly and easily configure suitable condensers or dry coolers for your requirements.

You can choose from a very wide performance range, a variety of fans for different noise emission requirements and an extensive programme of accessories.




Wide capacity range

  • Capacity range: 40 – 1450 kW
  • Large number of different types
  • Can be supplied for all refrigerants
  • Large selection of accessories

High-quality heat exchanger

  • Special copper pipes for HFC and heat carriers
  • Stainless steel pipes for NH3
  • Undulating aluminium fins for ease of cleaning and high heat transfer
  • Staggered tube pattern
  • Various fin spacings

Robust casing

  • Non-warping casing thanks to profiled side walls
  • All fan sections are separated from one another by separation sheets.
  • Sheet steel, galvanised
  • Powder coated in RAL 7035
  • Special varnishing possible

Suitable for All Noise Protection Requirements

  • Various diameter fans
  • Various speeds
  • Night setback with Güntner controls

The Güntner Product Calculator GPC calculates the optimum combination of number of fans, diameter and speed for the customer’s specific noise requirements.



Tailored solutions for any application

Inspection and cleaning

  • Fans easily accessible
  • Inspection cover
  • Hinged fan plates

Easy to install

  • Robust crane lugs to simplify transport by crane
  • Small number of feet and hence fewer bases, fewer attachments
  • Factory-fitted assembly groups (switch cabinets, empty casing...)

High operational reliability and leak containment

  • Proven Güntner floating coil principle (refrigerant tubes do not make contact with the casing, which increases the heat exchanger’s service life)
  • Low deflection casing for crane and forklift transport



  • 1-16 pcs.
  • 800mm, 900mm, 1000mm
  • Each fan section is separated by separation sheets

AC fans

  • Low-noise impeller with high efficiency
  • Two speeds as standard feature
  • Suitable for speed controllers
  • Motor protection with thermocontacts

EC fans

  • Low-noise impeller with a high level of efficiency
  • EC motors with a high level of efficiency
  • Individual speed adjustment
  • Integrated motor protection
  • Highly efficient operation and operational safety when used with Güntner Motor Management

All controls possible

AC fans

  • Step control, GMM step
  • Phase cutting control, GMM phasecut
  • Frequency regulator with all-pole sine filter, GMM sincon

EC fans

  • Speed-controllable, GMM EC

Modular and flexible!

  • Numerous possible combinations
  • Configurable tube materials and geometries
  • Various fin spacings
  • Various diameter fans
  • Various numbers of fans

Technical details



Güntner gas coolers for the first transcritical CO2 plant in China significantly improve the COP

Güntner gas coolers for the first transcritical CO2 plant in China significantly improve the COP

A wealth of Güntner’s expertise has gone into China’s first transcritical CO2 plant, which provides reliable refrigeration for Metro’s new Cash & Carry market in Beijing Li Shui Qiao. Peak summertime temperatures that almost reach the 40 °C/104 °F mark are the reason for using this efficient technology. An effective gas cooler solution by Güntner has been installed: A flatbed gas cooler in dry cooling mode combined with a V-SHAPE gas cooler in optional adiabatic cooling mode for summer. Thanks to the adiabatic system, the temperature of the air entering the coil is significantly lower. Hence, the CO2 outlet temperature can be much lower, improving the system’s COP by an average of 25 % during the summer months and by even up to 50 % at extreme ambient conditions with a dry bulb temperature of 40 °C/104 °F and a relative humidity of 35 %.


Project description (239 KB)

CO2 at the forefront

CO2 at the forefront

In an environmentally friendly CO2 cascade refrigerating plant, the Danish supermarkt uses condensers that operate as gas coolers at high ambient temperatures and supercritical processes.


Project description (1.16 MB)





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