Industry code 43.22 · Trøndelag
Plumbing, heat and air-conditioning installation in Namsos
There are 11 active companies in plumbing, heat and air-conditioning installation in Namsos. No new companies have been registered in the last 12 months. Together they have 58 registered employees. The largest company is Grannes Vvs AS with 26 employees. The oldest, H O Sandberg AS, was founded in 1967. 82% are limited companies.
- Active companies
- 11
- New in the last 12 months
- 0
- Registered employees
- 58
- Share of limited companies
- 82 %
The largest companies in plumbing, heat and air-conditioning installation in Namsos
Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.
| # | Company | Org. no. | Employees | Revenue | Founded |
|---|---|---|---|---|---|
| 1 | Grannes Vvs AS | 976717015 | 26 | NOK 52 m | 1996 |
| 2 | Namsos Rør AS | 918637931 | 10 | NOK 9 m | 2017 |
| 3 | Weider Rør AS | 994079867 | 9 | NOK 20.2 m | 2009 |
| 4 | Rs Driftsservice AS | 928442543 | 7 | NOK 1.8 m | 2021 |
| 5 | Proteq AS | 925448249 | 6 | NOK 9 m | 2020 |
| 6 | Jt Holding AS | 816696062 | – | – | 2016 |
| 7 | Gass & Energi AS | 826859652 | – | NOK 10.3 m | 2021 |
| 8 | Namdal Spyleservice AS | 835633012 | – | NOK 218.2k | 2025 |
| 9 | H O Sandberg AS | 924290854 | – | NOK 2.1 m | 1967 |
| 10 | Haugum Grøtting Rør & Vvs | 927016931 | – | – | – |
| 11 | Borgeteien's Varmepumper | 995415844 | – | – | – |
Newest companies in plumbing, heat and air-conditioning installation in Namsos
- Namdal Spyleservice AS5 Jun 2025
- Rs Driftsservice AS4 Jan 2022
- Haugum Grøtting Rør & Vvs26 Apr 2021
- Gass & Energi AS24 Mar 2021
- Proteq AS7 Aug 2020
- Namsos Rør AS1 Mar 2017
- Jt Holding AS8 Feb 2016
- Borgeteien's Varmepumper27 Apr 2010
- Weider Rør AS13 May 2009
- Grannes Vvs AS9 Sept 1996
Frequently asked questions
How many companies in plumbing, heat and air-conditioning installation are there in Namsos?
The Register of Legal Entities lists 11 active companies in plumbing, heat and air-conditioning installation in Namsos. No new companies have been registered in the last 12 months.
Which is the largest company in plumbing, heat and air-conditioning installation in Namsos?
Grannes Vvs AS is the largest by number of employees, with 26 employees. The organisation number is 976717015.
How many people work in plumbing, heat and air-conditioning installation in Namsos?
The companies have 58 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 5 of the 25 largest companies have reported employees.
How long have there been companies in plumbing, heat and air-conditioning installation in Namsos?
The oldest active company, H O Sandberg AS, was founded in 1967. 82% of the companies are limited companies.
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Other industries in the same group in Namsos
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 43.22. Figures are updated continuously.

