In safe hands
Once CTA your air-conditioning units, chillers or heat pumps are installed and in operation, our service team will ensure they run perfectly and optimally for years to come.
There for you, 24/7, 365 days a year
CTA service technicians are there for you and your customers. Whatever the system or refrigerant, our specialists are trained and equipped to handle it.
+41 31 720 10 00 (german)
+41 21 654 99 00 (french)
Please have the following information available when reporting a fault:
unit name and serial number
fault type
fault code from the unit display
property address
invoicing address
how to access the system
contact person (incl. telephone number)
Need a replacement part?
Need a new filter or another replacement part for your CTA unit? Just give us a call:
Service contracts and warranty extensions
We offer your customers a variety of service contracts. Regular servicing leads to flawless operation, an extended service life and reduced maintenance costs. Our customers are happy, and you will be too.
Advice on service contracts and warranty extensions for air-conditioning/refrigeration systems
Sascha Aeschbacher-Hefti
Sales Representative System Maintenance
Replacement unit for air-conditioning/refrigeration systems
At the end of an air-conditioning/refrigeration system’s service life, the unit must be dismantled and the potential for a replacement explored. Replacement projects pose their own particular challenges and requirements, whether this is replacement during ongoing operation or insertion into confined spaces.
Support team for large system servicing and servicing contracts
Matthias Grossenbacher
German-speaking Switzerland, Swiss Mittelland
Are you looking for domestic heat pump servicing information?
You can find our service offers here