Heat pumps


Industrial heat pumps mainly using natural refrigerants such as ammonia or CO2, one or two-stage with different temperature outputs for domestic hot water, heating and process heat.

We plan and design the following specific kinds of heat pump installation for industrial or domestic hot water and process heat supplies:

  • Redundant heating installations
  • Heating distribution and supply systems for consumers
  • Heat sinks of every kind, such as process heat, groundwater and lake water
  • Design and layout of complete hydraulic systems
  • Measurement and control technology installations

Customer benefits

  • Refrigeration installations using natural refrigerants such as ammonia, in cascade configuration, with one or two-stage heat pumps
  • High performance scalability
  • Redundancy modes and configurations to ensure high availability
  • High energy-efficiency and economy
  • Low operating costs even at high loading
  • Low CO2 emissions with small CO2 footprint
  • High dependability and operating security
  • High flexibility and supply reliability


  • Aargauische Elektrizitätswerke AG (Aargau Power Company, AEW), Aarau: concept study for Rheinfelden district heating
  • Bell AG, Oensingen: ammonia heat pump in cascade configuration for process heat
  • Trio Housing Estate, Dietikon: 2-stage ammonia heat pump with river water heat sink
  • St. Gall Abattoir, Gossau: ammonia heat pump in cascade configuration for process heat
  • Badrutt’s Palace Hotel, St. Moritz: control system upgrade for 2-stage ammonia heat pump


You are welcome to contact us for additional references or a personal appointment:

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