Refrigeration technology suitable for your project

Each of your refrigeration projects is intended to fulfil a specific purpose – and in fact sensibly, economically and sustainably. We contribute to your success with our chillers and expertise. Our products are available in series or custom-made with a power range between 6 and 4000 kW, installed inside or outside, water-cooled or air-cooled and with refrigerants such as propane, HFO or ammonia.

Your advantages with CTA chillers


CTA as a professional partner


High-quality product


Natural and synthetic refrigerants


Personal service throughout Switzerland


Durable and sustainable


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Chillers in the data centre

Data centres should achieve maximum performance with as little energy as possible. This should be as eco-friendly as possible. Refrigeration technology offers solutions for this - our experts show how.

Chillers references

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The art of replacing systems

A leading Swiss luxury watch company replaced the refrigeration system at its headquarters after 14 years. Particularly challenging: the placement.

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New building

Safe and climate-friendly – Chillers with NH₃ for data centres

Their high safety standards make ammonia chillers a reliable and safe solution for cooling data centres. The example of a redundantly designed cooling system for a regional data centre operator shows that high performance and energy efficiency go hand in hand.

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New building

Energy-efficient leisure experience at the Silvretta Thermal Baths

The Silvretta Thermal Baths in Ischgl set new standards, both in terms of the experience it offers and in terms of building technology. The construction and its operation should be as energy-efficient and sustainable as possible. CTA’s heat pumps also play an important role.

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Sustainable energy supply for historic building

The site of today’s industrial park “The Valley” is located where the legendary Maggi stock cubes were once produced. From autumn 2023, the historic buildings will be sustainably heated and cooled using energy from the air. The key components are four custom-made, reversible chillers/industrial heat pumps.

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Indoor CBD hemp facility, Nunningen

Complex cooling control for cannabis products

The professional indoor production of CBD hemp flowers requires the precise regulation of temperature and humidity. LMP GmbH in Nunningen therefore uses CTA’s cooling control system. This ensures an optimal climate, day and night, while cooling and dehumidifying the rooms simultaneously.

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CO₂-neutral at 2,100 metres above sea level

Can a building at more than 2,000 metres above sea level be heated in a CO2-neutral way? The Pro Natura Aletsch Centre in Riederalp puts this to the test and proves that it can. Air/water source heat pumps from CTA play a key role in this process. The power comes from a self-powered photovoltaic system.

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Heat for sustainable shrimp farming

With a CTAexklusiv industrial heat pump, the energy supplier AEW Energie AG uses the waste heat from salt production at the Riburg salt mine for the Rheinfelden Rüchi heating network. A major consumer of the heat is the nearby SwissShrimp AG shrimp farm.

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1.2 MW

Propane chillers, each with a 1.2 MW cooling output

Natural refrigerants are on the rise. Whereas ammonia has to date been the main compound used in megawatt refrigeration systems, propane is now also making inroads into the higher-performance segment. This is underlined by the expansion of the energy centre at the Stuecki-Areal in Basel to include two propane refrigeration systems from CTA, each with a cooling capacity of 1.2 MW.

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Biozentrum Basel

Perfect cooling for innovative cutting-edge research

Perfect cooling for innovative cutting-edge research. Three NH3 chillers (Varimatik) are installed in the Biozentrum Basel.

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High-performance air/water

530kW air source heating capacity for Basel

In 2018, Basel City energy provider IWB installed two custom-made, high-temperature air/water source heat pumps from CTA, with a total heating capacity of 530 kW, in the St Jakob heating network. These replaced a natural gas-powered combined heat and power unit (CHP) and contributed to the further reduction of CO2 emissions from the heat supply in Basel.

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Your contact for standard chillers

Marco Vagelli 20220113_083313815_iOS_1000x667

Marco Vagelli

Zurich, Eastern Switzerland, Zug, Schwyz

+41 44 405 40 44

Hanspeter Pfister DSC0308_1000x667

Hanspeter Pfister

Zurich, Eastern Switzerland, Zug, Schwyz

+41 44 405 40 20

Fritz Egli DSC0378_1000x667

Fritz Egli

Lucerne, Obwalden, Nidwalden, Uri, Ticino

+41 31 720 10 24

Danijel Matic IMG_5139_1000x667

Danijel Matic

Basel-Landschaft, Basel-Stadt, Aargau, Solothurn

+41 61 413 70 78

Christian Krebs DSC0364_1000x667

Christian Krebs

Freiburg, Bern, Valais

+41 31 720 10 46


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