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Our products

Thanks to our wide range of products and our specialist knowledge, you get what you need for your projects. Filter our products by product type and other specifications and get talking to us.

Optiheat Terra All-in-One

Geothermal energy

Optiheat Terra All-in-One

Unique – uses propane with no need for an on-site safety plan (up to 18 kW)

Heating capacity range: 1 - 18 kW
Natural refrigerant R-290 (propane)
Swiss development and production
Simple and flexible installation
Scarcely audible
High flexibility of hydraulic connections
Highest efficiency (SCOP 5.3 à B0/W35 resp. 6.2 à B5/W35)
Secure, no on-site safety concept required

Optiheat Inverta TWW

Geothermal energy

Optiheat Inverta TWW

3-in-1 concept, capacity-regulated, personalised

Heating capacity range: 2 - 7.5 kW
One unit for heating, cooling and hot water
Space-saving all-in-one unit
No heat billing in block of flats
Scarcely audible

Optiheat Inverta Economy

Geothermal energy

Optiheat Inverta Economy

Energy-efficient, capacity-regulated, flexible

Heating capacity range: 5 - 35 kW
Wide performance range
Available with hydraulics ready for connection (OH I 9ec)
Fits through all standard doors
Very quiet operation

Optialtum Inverta HT

Geothermal energy

Optialtum Inverta HT

Hot water generation made easy – compact and reliable

Heating capacity range: 13.6 - 50.1 kW
Particularly suitable for hot water generation
Legionella protection without electric booster heater
Perfect for renovations
Reliable make with one or two separate cooling circuits

Optialtum Inverta HT with two compressors

Geothermal energy

Optialtum Inverta HT with two compressors

Hot water generation made easy – compact and reliable

Heating capacity range: 13.6 - 100.2 kW
Particularly suitable for hot water generation
Legionella protection without electric booster heater
Perfect for renovations
Reliable make with one or two separate cooling circuits

5 from 263 product ranges

Our references

CO2W Bassersdorf web

CO₂ heat pump for a residential complex with 28 homes

At the InSite residential complex in Bassersdorf, a modern CO2 air/water heat pump, supported by an isobutane heat pump, acts as a reliable source of heat and hot water for the 28 homes spread across three buildings. The installation shows how fossil fuel heating systems can be replaced efficiently and sustainably even in large residential complexes.

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Efficient cooling solution for Interlaken Hospital

Interlaken Hospital is investing in its future and adapting its infrastructure to meet modern requirements. In the new building now replacing the oldest complex on the hospital campus, a CTA standard chiller ensures everything is at the right temperature – in summer and in winter.

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Cooling and heating for the new Festhalle in Bern

When up to 9,000 people attend a concert or conference inside the new Festhalle Bern, it can get pretty warm. A custom CTA cooling/heating unit acts as a chiller in summer and a heat pump during winter, thus ensuring pleasant temperatures all year round.

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Heat pump replacement in a 1950s house

Every heating system needs to be replaced at some point. Heat pumps are no exception. In this detached house, the old heat pump was replaced by a new one. Latest-generation heat pumps are even more energy-efficient and economical.

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Replacement system

Extremely quiet replacement system with a sustainable refrigerant

The previous chiller had reached the end of its service life and had to be replaced. A new low-noise propane chiller was installed and commissioned in record time. The backbone of the project was the long-standing partnership with the supplier of the chiller.

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Replacement system

Sustainable cooling technology for cheese production

Cheese production requires reliable cooling. To achieve this, the Studer cheese dairy uses a propane-based cooling system with ice storage. Thanks to its natural refrigerants, a sound and simple safety concept and regular maintenance, this system guarantees optimum quality and seamless operation.

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Replacement system

Bespoke cooling solutions pay off

In addition to high-quality and financially attractive standard solutions, CTA offers its customers custom refrigeration systems that meet special requirements (capacity, regulation, installation, etc.). Although they are more expensive to purchase, they often promise savings in energy costs. And it shows: despite higher investment costs, custom refrigeration solutions are not necessarily more expensive than standard machines over their entire service life.

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Do you have any questions regarding our products?

We will be happy to discuss with you in detail how one of our products can be useful for your project.

Link to the sales team