Expert in cabin thermal management, we have been designing and supplying air-conditioning, heating, ventilation, air filtration and pressurisation solutions for the original equipment manufacturer (OEM) market and aftermarket (AM)since 1986. We work on a wide variety of interiors or cabins in multiple sectors.As an equipment manufacturer specialising in thermal management , we handle thermal comfort and air quality issues, from design to production, with solutions adapted to each customer project. Heat balance, airflow, simulation of temperature and de-icing, prototyping and testing, SNDC's R&D teams take into account the customer's requirements and norms of the harshest environments.

Our philosophy

Each client is unique, each project is unique and we are committed to respecting both quality, cost and deadlines. Our desire is to support you throughout the life of a project.

Quality management system

SNDC is ISO 9001:2015 certified, by TÜV Rheinland France since 2017. This certification demonstrates SNDC's commitment to providing products and services that meet our customers' expectations.

Research & Development

Expertise, design department, research and development teams

Dedicated test facilities

Integration of the after-sales service from the design stage

Selection of components adapted to the requirements and security of supply


French manufacturing

Specialized and dedicated assembly lines

Ongoing and final bench testing, automated control of 100% of the production

Securing spare parts


Detailed knowledge of HVAC customer requirements

Integration of the specificities of the client's business

Personalized follow-up

Support throughout the life of the product

Training of your operators and technicians

Test center

Prototype testing, in the definition of series, is an essential phase in the development of our standard solutions or specific solutions. Cabin heating and air-conditioning, window de-icing, pressurisation and air filtration efficiency, are some of the points tested by SNDC teams in application of standards specific to each environment and activity. SNDC has two test rooms that reproduce the most diverse climatic environments (temperature from 55°C to -35°C, hygrometric control and saturation, reproduction of sunlight).

Air-conditioning system testing room

It can accommodate large equipment (agricultural and public works machinery, industrial vehicles, etc.) in order to carry out performance tests in the harshest temperature, humidity and sunlight configurations in any geographical area.


  • Dimensions
    • Length: 9.6 m
    • Width: 5.6 m
    • Height: 7.5 m
    • Volume: 403 m3
  • Use capacity
    • Length: 9 m
    • Width: 4.5 m
    • Height: 4.3 m
Interior of the hot room

Heating and de-icing test room

SNDC's unique heating and de-icing test room reproduces sub-zero temperatures down to -35°C, without requiring the energy input of the engine of the machine on which the cabin is installed. This allows the validation of the performance of the heating system, the quality and the time of window de-icing; the cabin heating system is coupled to a thermal generator that reproduces the flow and rise of the vehicle engine coolant. This eliminates external influences from the engine or hydraulic systems.


  • Dimensions
    • Length: 4.6 m
    • Width: 4.3 m
    • Height: 3.9 m
    • Volume: 77 m3
  • Use capacity
    • Length: 4 m
    • Width: 3.9 m
    • Height: 3 m
Interior of the cold room

SNDC's testing rooms, facilities and equipment are periodically audited by an independent auditor in accordance with ISO requirements.

Tools present in the room

  • 1 27.5V-100A power supply
  • 1 13.5V-100A power supply
  • 1 10kW 0-500V/0-60A power supply
  • 1 380V-32A power supply
  • 2 5m/s fans

Standards applicable in testing rooms

  • EN 15695
  • ISO 3737
  • NF EN 10551
  • ISO 10263
  • ISO 14269

Measurement means

With acquisition system
  • 12 temperature sensors with an accuracy of ±0.1 °C
  • 2 ammeters
  • 2 0/60 bar pressure probes
  • 1 -1/40 bar pressure sensor
  • 1 humidity probe

Measurement means

Without acquisition system
  • 1 SL-5826 sound level meter
  • 1 KIMO SL100 polarimeters
  • 1 KIMO MP100 micromanometer
  • 1 KIMO CT100 tachometer
  • 2 KIMO VT100 hot wire anemometers
  • 1 KIMO TK100 thermometer
  • 1 KIMO LV50 thermo-anemometer
  • 1 KIMO HD110 thermo-hygrometer
  • 1 Mastercool 52224-A laser thermometer