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Strong. Extreme. ClimeEvent!

A new era in environmental simulation.

When it comes to testing extreme conditions, engineers the world over choose weisstechnik innovative climate test chambers. Developing high-performance systems which guarantee reliable and extremely reproducible measurement results is our passion. Our ClimeEvent, which is about to launch, is a world first. Are you ready for a new era? Discover its many benefits and get an impression of our latest innovation. 


Strong to the extreme.

New era. New standards.

With ClimeEvent, a world first from weisstechnik, your measurement results will become even more reliable and reproducible. A new refrigerant that deceeds tomorrow's standards already today ensures high future-proofness, making ClimeEvent extremely eco- and user-friendly. Optimised air guidance delivers best-in-class performance. The innovative WEBSeason® user interface allows you to program, control and monitor your tests at anytime and anywhere – even from your tablet or smartphone.

Extreme benefits.

A new generation of climate test chambers


ClimeEvent takes you to the future – extremely safely

All ClimeEvent climate test chambers use the new R449A refrigerant. Its GWP value of just 1,397 ensures safe usage even after 2030, and the refrigerant will not have to be replaced. As a result, we are already surpassing the statutory standards of tomorrow as well as future-proofing your tests and making them easier to maintain and more environmentally friendly.

Be prepared for the future

Future-proof thanks to the new R-449A refrigerant

R-449A, the new and environmentally-friendly refrigerant, is already used today in the climate test chambers of the ClimeEvent series. With a GWP value of just 1,397, it has an extremely low global warming potential and allows the long-term operation of the system beyond 2030. R-449A offers yet another benefit: Thanks to its low GWP value, fewer leak tests are required. This reduces the servicing requirements compared to R-404A and saves you time and money.

F-gas Regulation: extremely important questions and answers

Impacts of Regulation (EU) No 517/2014


When did the European Regulation (EU) No 517/2014 become binding?


Regulation (EU) No 517/2014, also known as F-gas Regulation, entered into force Europe-wide on 1 January 2015.


What is the F-gas Regulation?


The objective of this Regulations is to protect the environment by reducing emissions of fluorinated greenhouse gases, among others in refrigerants.


What are the requirements under the F-gas Regulation?


The F-gas Regulation establishes rules on containment, use, recovery and destruction of fluorinated greenhouse gases and on related ancillary measures.


Why does the F-gas Regulation affect operators of climate chambers?


Climate chambers are cooled by refrigerants which consist of hydrofluorocarbons and are thus subject to the F-gas Regulation. Operators of such a systems are legally obliged to implement the Regulation in a technically correct manner.


Which refrigerants are affected?


The Regulation contains a classification system that specifies which refrigerants must be replaced due to their potentially detrimental properties. In the case of environmental simulation systems, this refers to R404A and R507.


What relevance does the GWP value have?


The GWP (Global Warming Potential) value indicates the factor by which the substance's potential effect on global warming is higher than that of CO2. This is referred to as the CO2 equivalent.


From which date onwards will the Regulation affect operators?


All new and existing systems will be subject to the amended regulations for leakage tests as of 1 January 2017. Depending on the CO2 equivalent of the respective refrigerant, leakage tests may be mandatory – even in the case of smaller fill quantities.


Which regulations apply to new systems?


As of 2020, refrigerants in new systems may not exceed a GWP value of 2,500. Regulation (EU) No 517/2014 does not specify any limits regarding the fill quantity.


Which regulations apply to existing systems?


Existing systems may continue to operate after 2020, irrespective of the refrigerant used. As of 2030, existing systems must be changed over to an alternative refrigerant when they are serviced.


Which refrigerant is used in ClimeEvent climatic test chambers?


weisstechnik® uses the future-proof and environmentally compatible R449A refrigerant with a very low GWP value of 1,397 in all ClimeEvent climate test chambers.

Everything at a glance. Everything under control. Everything perfect.

More comfort and better usability with S!MPAC® and WEBSeason®.


• Modern and dynamic design with gesture control for intuitive operation

• The multi-user concept allows several users to have access at the same time, user rights are individually allocated

• Easy programming of test procedures and loops

• Program preview presented as a chart

• Global access, even from tablets and smartphones


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