For more than 60 years products from our house ensure the right temperatures. Through path- breaking developments in the field of refrigeration and air- conditioning engineering we have gained worldwide recognition.

Our product range covers unit air coolers, fan coils and finned heat exchangers. We only produce at our company located in Gerlingen near Stuttgart.

Fan Coil Units
Air Coolers
Heat Exchangers



Chillventa 2014

Chillventa 2014 will be all about natural refrigerants and energy saving. We invite you to have a look at our innovations. You can find us in hall 5 stand 209.[more]

Starting at Chillventa 2014 we will introduce our new condeser and dry cooler portfolio.[more]

Latest additions include e.g. new prices and DHN with EC fans.[more]

We advance in implementing energy saving EC technology to further models. Latestly we upgraded our double exhaust cooler DHN.[more]

A very efficient way to defrost unit air coolers is by hot brine. Let's have a look into our development department to get a impression of this way of defrosting.[more]

Walter Roller can built air unit coolers up to room temperatures of -60 °C.[more]

Documentation for different products has been updated feel free to download our request a printed one.[more]

The energy- efficiency of the FKN/T unit has been improved by installing EC- fans.[more]

Version 7.4.6 of the Roller Selection Software is now available for downloading.[more]

With immediate effect we can declare, that our air unit coolers for refrigerant CO2 (R744) can be used for pressures up to 60 bar.[more]