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SIATHERM SA

ActiveSIREN number 659 803 084Limited liability company (SARL)Est. 196543.22 · Plumbing, heat and air-conditioning installationMontesson, Île-de-France
Official record (Annuaire des entreprises) ↗
Age61 years
older than 99% of its sector
Same activity, France62,273live companies · 363rd oldest
In Montesson1,599live companies · 19 in the same activity
At this address2live companies incl. this one
Employees20–49as registered · 2024

In brief

SIATHERM SA is a limited liability company (SARL) registered in France on 1 January 1965. At 61 years old it is older than 99% of the 62,273 live companies whose main activity is plumbing, heat and air-conditioning installation. Its registered office is in Montesson, Yvelines, Île-de-France, at an address shared with one other live company. 19 live companies in Montesson share the same main activity.

Register details

Registered nameSIATHERM SA
SIREN number659 803 084
Company typeLimited liability company (SARL)
Registered office26 Rue Du Chateau D'eau, 78360 Montesson
Nature of business (NACE Rev. 2.1 (French NAF 2025))43.22 Plumbing, heat and air-conditioning installation
International sector (ISIC Rev.4)F · 43 Specialised construction activities

Timeline

Register events, newest first.

  • Incorporated

Register entries

From the register.

Incorporated1 January 1965
Employees20–49 (2024)

Plumbing, heat and air-conditioning installation in France

Live companies whose main activity is 43.22: 62,273 in total, median age 10 years, 3,395 incorporated in the past 12 months.

All 62,273 companies
This company's decadeOther decades
010,00020,00030,00040,0001900s: 51511900s1940s: 111940s1950s: 99991950s1960s: 4194191960s1970s: 5245241970s1980s: 1,1731,1731980s1990s: 3,1303,1301990s2000s: 13,78613,7862000s2010s: 19,25619,2562010s2020s: 23,83423,8342020s
Incorporated per year, still live
02,0004,0006,0008,0002011: 2,03920112012: 1,8832013: 1,63420132014: 1,6132015: 1,68720152016: 1,7992017: 2,01420172018: 2,1402019: 2,57320192020: 2,6052021: 3,40520212022: 3,6522023: 3,88720232024: 3,8712025: 3,60520252026: 2,809

Location

Registered office in Montesson, Yvelines, Île-de-France.

Live companies in Montesson1,599
Same activity in Montesson19
Live companies in Yvelines151,787
New in Montesson, past 12 months82

Also registered at this address

1 other live company shares this registered office.

  • ZZOL507 873 644 · Est. 2008 · 68.20

Similar companies

Live companies with the same main activity, nearest first.

Compare all
SA
SOCIETE ARMENGOD ET COMPAGNIEVersailles, Île-de-France
Number 669 801 334Est. 1966
EC
ETABLISSEMENTS CAVERNE ET FILSVersailles, Île-de-France
Number 785 141 011Est. 1966
EN
ENTREPRISE NADOTSaint-Germain-en-Laye, Île-de-France
Number 310 358 882Est. 1964
FE
FOUCHER ET FILSSaint-Cyr-l'École, Île-de-France
Number 311 945 463Est. 1964
EG
ETABLISSEMENTS GAUTIERSoindres, Île-de-France
Number 785 132 655Est. 1964
E
ELECTROFLUIDOrgeval, Île-de-France
Number 639 800 648Est. 1963

Sources

Register data: Insee, Sirene database of companies and establishments (Licence Ouverte / Open Licence 2.0), delivery of 21 October 2026. Territories: Insee, Code officiel géographique 2026. Industry names: European Union, EU Vocabularies (NACE Rev. 2.1). Context figures are computed by FirmsDB from these sources. This page is not an official register; check the company's entry in the French government business directory before relying on it.