Planning, construction and maintenance of energy-efficient refrigeration, air conditioning and heat pump systems as well as energy centres for indoor farming.
Kälte Kuster GmbH
SwitzerlandNew on Amplifa
About Kälte Kuster
Kälte Kuster GmbH is a Swiss specialist company for climate technology systems with core competencies in the planning, construction and maintenance of refrigeration systems. The portfolio includes split and multi-split air conditioning systems for residential, commercial and industrial buildings, refrigeration systems for gastronomy and industry including cold storage and deep-freeze rooms, heat pumps (air-water, water-water, geothermal) as well as heat recovery and heat storage systems. A key focus is on complete solutions and energy centres, in particular for indoor farming and vertical farming: the in-house developed energy centre covers capacity ranges from 2 to 2000 kW of cooling or heating capacity and uses exclusively refrigerants with the lowest possible environmental impact (R290, R744, HFO). Further services include optimisation of existing building services, maintenance, remote maintenance, emergency on-call service and CO2 fumigation systems. Reference customers come from sectors such as public transport, hotels and gastronomy, wastewater treatment, biotechnology and agriculture. Projects have been realised in Switzerland, Germany and Austria; the website growing.technology documents the project references.
- Site
- Switzerland
- Processes
- Planning, construction and maintenance of refrigeration systems, Air conditioning systems (split and multi-split) for residential, commercial and industrial, Refrigeration systems for gastronomy and industry, cold storage and deep-freeze rooms, plug-in, Heat pumps (air-water, water-water, geothermal), heat recovery and, Complete solutions/energy centres: cooling, heating, free cooling, energy storage, energy management, Energy centre for indoor farms (cooling, dehumidification, adaptive dehumidification, heating,, Maintenance and service of refrigeration and air conditioning systems, optimisation of existing, Refrigeration drying (sludge drying with refrigeration dryer, control via frequency converter)
- Materials
- R32, R513A, R290, R744, HFO, Plant-based glycols, R404A, R449A
- Certificates
- Remote maintenance/monitoring 24/7, Statutory leak checks
- Industries
- Indoor Farming / Vertical Farming, Gastronomy / Hotels, Industry, Public Transport, Wastewater Treatment, Commercial Halls / Real Estate
- 01
Consultation and needs assessment
- 02
Preliminary project and planning (engineering)
- 03
Quotation and solution development
- 04
Construction and installation of the system
- 05
Commissioning
- 06
Remote maintenance, servicing and optimisation
Refrigerants and System Technology
R290 (propane)
Natural refrigerant with minimal environmental impact for energy centres.
R744 (CO2)
Natural refrigerant for energetically optimised cooling and heating systems.
HFO
Refrigerant family with the lowest possible environmental impact.
R32
Low-GWP refrigerant, used among others in multi-split air conditioning systems and the chiller for Umami Illnau.
R513A
Refrigerant of the climate system with energy storage at SANlight in Schruns.
R449A
Modern refrigerant (GWP 1397) for refrigerant conversions from R404A.
R404A
Legacy refrigerant (GWP 3922) whose replacement by R449A was implemented.
Plant-based glycols
Heat transfer fluids for energy systems with minimal environmental impact.
Locations
Spiez
CHPlanning, engineering, installation and service
- Materials
- R290, R744, HFO, R32, R513A, R449A
- Refrigeration and heating systems
- Energy centres
- Remote maintenance
Systems and Plants
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Planning, construction and maintenance of refrigeration systemsEngineering | – | – | – | – | – |
| Air conditioning systems (split and multi-split) for residential, commercial and industrialInstallation | – | – | – | – | R32 |
| Refrigeration systems for gastronomy and industry, cold storage and deep-freeze rooms, plug-inEngineering | – | – | – | – | – |
| Heat pumps (air-water, water-water, geothermal), heat recovery andEngineering | – | – | – | – | – |
| Complete solutions/energy centres: cooling, heating, free cooling, energy storage, energy managementEngineering | – | – | – | – | – |
| Energy centre for indoor farms (cooling, dehumidification, adaptive dehumidification, heating,Engineering | – | – | 2 kW – 2000 kW | – | R290, R744, HFO, Plant-based glycols |
| Maintenance and service of refrigeration and air conditioning systems, optimisation of existingTesting | – | – | – | – | – |
| Refrigeration drying (sludge drying with refrigeration dryer, control via frequency converter)Engineering | – | – | – | – | – |
| CO2 fumigation system, modular climate system with energy storage for indoor farmingEngineering | – | – | – | – | – |
| Chilled and hot water generation, free cooling, air/water heat pump operation, cooling systemEngineering | – | – | – | – | – |
| Refrigerant retrofit (R404A to R449A) and heat recovery on existing refrigeration systemsInstallation | – | – | – | – | R404A, R449A |
| Geocooling via ground probe system, active cooling with water-cooled VRV system, hydraulicEngineering | – | – | – | – | – |
| Chiller with low-GWP refrigerant, waste heat utilisation, heat pump operation, hydraulicEngineering | – | – | – | – | R32 |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Reciprocating compressor with frequency converter | Bock | – | 25Hz (minimum capacity) to 60Hz (maximum capacity) | – | SANlight Schruns |
| Water-cooled VRV air conditioning system | Daikin VRV | – | – | – | Single-family house Lake Thun |
| VRF air conditioning system | – | – | – | – | – |
Additional services
Reference customers
Quality and Maintenance
Systems are monitored around the clock and continuously optimised via remote maintenance. Maintenance includes leak checks in accordance with legal requirements for systems with a refrigerant charge of 3 kg or more.
| Evidence | Spiez |
|---|---|
| Remote maintenance/monitoring 24/7 | |
| Statutory leak checks |
Project History
- 2019
Air-conditioned technical rooms for the Berner Oberland Bahnen to ensure fail-safe railway operation.
- 2019–2020
Planning and construction of the complete system for Vertical Growing, Dietlikon: cooling capacity 1080 kW, 2118 m2 of growing area, medical cannabis, CO2 fumigation system.
- 2021
Refrigerant conversion from R404A to R449A and extended heat recovery at Hotel Eden Spiez.
- 2022
Market launch of the energy centre for indoor farms (capacity ranges 2–2000 kW, refrigerants R290/R744/HFO).
- 2023
Climate system with energy storage for the SANlight laboratory in Schruns, Austria (70.3 kW cooling / 90.6 kW heating, refrigerant R513A).
- 2024
Multi-split air conditioning systems (R32) for GreenPlaces commercial halls in Switzerland and Germany.
- 2025
Optimisation of the sewage sludge drying at ARA Meiringen with electricity cost reductions of around 30%; complete solution for Umami AG in Illnau.