Planning, implementation and maintenance of refrigeration, air conditioning and heat pump systems for industry and buildings.
hs kälte wärme klima gmbh
Siebnen (CH) · HeadquartersNew on Amplifa
About hs kälte wärme klima
hs kälte wärme klima gmbh, based in Siebnen in the canton of Schwyz, has been planning, implementing and maintaining refrigeration, air conditioning and heating systems for industry and buildings since 1998. What began as a classic service and installation company has developed into a holistic project partner that accompanies projects from technical consulting through calculation, quotation preparation and design planning to installation, commissioning and service. The product portfolio includes refrigeration units and chillers with cooling capacities from 13 to 1600 kW, free-cooling chillers from 40 to 1200 kW, industrial coolers from 1.7 to 971 kW, heat pumps with heating capacities from 49 to 324 kW as well as split, multisplit and VRF air conditioning units, IT cooling cabinets and climate convectors. In addition, the company builds refrigeration units to customer specifications, including control panels with PLC or conventional control and on-site installation. As the Swiss service centre of KKT chillers and a distribution partner of Fujitsu, hs offers solutions for industries such as laser technology, plastics technology, food technology, surface technology, chemicals and pharmaceuticals, medicine and IT/EDP. Since 2025, the office, warehouse and workshops have been consolidated at the new location in Siebnen; the company also operates as a training company.
- Site
- Siebnen
- Processes
- Planning of refrigeration and air conditioning systems (concept support, design planning,, Refrigeration installations, equipment installation, dismantling and disposal, commissioning, Periodic maintenance, leak testing, system cleaning and upkeep of refrigeration/air conditioning, 24h on-call service for fault rectification, Sales and installation of split air conditioning units (Fujitsu, R-32, 2–22 kW), Sales and installation of multisplit/VRF air conditioning units (Fujitsu, 12–150 kW), IT cooling cabinets (close control, cooling capacity 5–105 kW), Fan-coil climate convectors (floor, ceiling and duct versions)
- Materials
- Refrigerant R-32, Refrigerant R410A, Refrigerant R134a, Refrigerant HFO R1234ze, Refrigerant R454B, Refrigerant R513A, Heat transfer medium water/glycol, Refrigerant HFO R1234ze (GWP 1)
- Certificates
- Pressure Equipment Directive PED, Module A2 (internal production control with, Connection permit according to Low-Voltage Ordinance Art. 15 NIV, Specialist permit for handling refrigerants (VFB-K), PED Module A2 (2014/68/EU), Swiss Safety Center, Connection permit Art. 15 NIV, Specialist permit refrigerants (VFB-K), ISO 9001
- Founded
- 1998
- Industries
- Industry, Building services, Laser technology, Plastics technology, Food technology, Surface technology
- 01
Sales and technical consulting
- 02
Calculation and quotation preparation
- 03
Quotation preparation and concept support
- 04
Design planning and implementation supervision
- 05
Refrigeration installation and equipment installation
- 06
Commissioning and system documentation
- 07
Maintenance, leak testing and upkeep
- 08
24h on-call service
Refrigerants and heat transfer media
Refrigerant R-32
Environmentally friendly refrigerant for split, multisplit and VRF air conditioning units and IT cooling cabinets.
Refrigerant R410A
Used in heat pumps, reversible heat pumps/chillers and industrial coolers.
Refrigerant R134a
Refrigerant for heat pumps and NANO LINE industrial coolers.
Refrigerant HFO R1234ze (GWP 1)
Future-proof refrigerant with a very low GWP for free-cooling chillers and heat pumps.
Refrigerant R454B (GWP 466)
Option for refrigeration units and chillers.
Refrigerant R513A (GWP 631)
Option for refrigeration units and chillers.
Heat transfer medium water/glycol
Coolant for liquid coolers and industrial coolers.
Locations
Siebnen
CHHeadquarters: office, warehouse, workshops
- Materials
- Refrigerants R-32, R410A, R134a, HFO R1234ze, water/glycol
- Workshops
- Warehouse
- On-call service vehicles
Systems and products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Planning of refrigeration and air conditioning systems (concept support, design planning,Engineering | – | – | – | – | – |
| Refrigeration installations, equipment installation, dismantling and disposal, commissioningInstallation | – | – | – | – | Refrigerants |
| Periodic maintenance, leak testing, system cleaning and upkeep of refrigeration/air conditioningTesting | – | – | – | – | – |
| 24h on-call service for fault rectificationInstallation | – | – | – | – | – |
| Sales and installation of split air conditioning units (Fujitsu, R-32, 2–22 kW)Installation | – | – | – | – | Refrigerant R-32, Refrigerant R-410A |
| Sales and installation of multisplit/VRF air conditioning units (Fujitsu, 12–150 kW)Installation | – | – | – | – | Refrigerant R-32 |
| IT cooling cabinets (close control, cooling capacity 5–105 kW)Installation | – | – | – | – | Refrigerant R-32 |
| Fan-coil climate convectors (floor, ceiling and duct versions)Installation | – | – | – | – | – |
| Liquid coolers/chillers (cooling capacities 13–1600 kW, scroll or screw compressors)Installation | – | – | – | – | Refrigerant R32 (GWP 675), Refrigerant R454B (GWP 466), Refrigerant R513A (GWP 631), HFO R1234ze (GWP 1) |
| Free-cooling chillers (FC chillers, 40–1200 kW)Installation | – | – | – | – | HFO R1234ze |
| Industrial coolers NANO LINE (1.7–6.5 kW cooling capacity) for laser technology, plasticsInstallation | – | – | – | – | Heat transfer medium water or water/glycol, Refrigerant R134a |
| Industrial coolers VARIO LINE (6–28 kW cooling capacity)Installation | – | – | – | – | Heat transfer medium water or water/glycol, Refrigerant R410A |
| Industrial coolers COMPACT LINE (30–200 kW cooling capacity)Installation | – | – | – | – | Heat transfer medium water or water/glycol, Refrigerant R410A |
| Industrial coolers EVO LINE / EVO LINE PLUS (260–971 kW cooling capacity)Installation | – | – | – | – | Heat transfer medium water or water/glycol, Refrigerant R410A |
| Refrigeration units to customer specifications (in-house construction): chillers, directInstallation | – | – | – | – | – |
| Heat pumps for industrial and building services (heating capacities 49–324 kW)Installation | – | – | – | – | Refrigerant R410A, Refrigerant R134a, HFO R1234ze/yf |
| Reversible heat pumps/chillers 15–1600 kW, multifunctional 4-pipe systems 45–430 kWInstallation | – | – | – | – | Refrigerant R410A, Refrigerant R134a |
| Connection of electrical products in accordance with Art. 15 NIV (motors, pumps, control andInstallation | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Industrial cooler NANO LINE (nBoxX 1.7–6.5 kW, setpoint constancy ±2 K, tank 10–26 l) | KKT chillers nBoxX 1.7–6.5 | – | – | – | Swiss service centre |
| Industrial cooler VARIO LINE (6–28.5 kW, speed-controlled compressor, control accuracy ±0.5 K) | KKT chillers vBoxX 6–28 | – | – | – | – |
| Industrial cooler COMPACT LINE (34–204 kW, scroll compressor, control accuracy ±1 K) | KKT chillers cBoxX 30–200 | – | – | – | – |
| Industrial cooler EVO LINE (260–528 kW cooling capacity) | KKT chillers eBoxX 260–530 | – | – | – | – |
| Split, multisplit and VRF air conditioning units (cooling capacities 2–50 kW per unit, up to 48 | Fujitsu VRF-JIV, VRF-JIVS, VRF-JIVL, VRF-VIV, VRF-VRIV | – | – | – | – |
Additional services
Quality and certification
The company is certified in accordance with the Pressure Equipment Directive PED (Module A2 according to Directive 2014/68/EU) by the Swiss Safety Center and is audited annually; the scope covers refrigeration and air conditioning systems of categories I and II. All service and installation staff hold the specialist permit for handling refrigerants (VFB-K) as well as the Low-Voltage Ordinance (NIV) permit under Art. 15.
| Evidence | Siebnen |
|---|---|
| PED Module A2 (2014/68/EU), Swiss Safety Center | |
| Connection permit Art. 15 NIV | |
| Specialist permit refrigerants (VFB-K) | |
| ISO 9001 |
Company history
- 1998
Foundation of HiPAG Service GmbH by Clemens Benoit and Thomas Huber; started with installation, service and sales of refrigeration and air conditioning systems; international assignments in Europe and overseas
- 2007
Introduction of today's brand identity with the hs logo and polar bear
- 2008
10th company anniversary
- 2009
Location Siebnen (Oststrasse 5), renaming to hs kälte wärme klima gmbh, first media presence in the Swiss construction journal
- 2014
Expansion of the location and consolidation of sites
- 2018
20 years of hs – solidified market position
- 2019
Implementation of one of the first HFO free-cooling chillers
- 2023
Generational change in management; Thomas Huber and Aaron Rainalter continue to lead the company together
- 2025
New location in Siebnen (Wägitalstrasse 22); consolidation of office, warehouse and workshops; expansion as a training company