Industry code 43.22 · Trøndelag

Plumbing, heat and air-conditioning installation in Trondheim

There are 204 active companies in plumbing, heat and air-conditioning installation in Trondheim. 21 of them were registered in the last 12 months. Together they have 1,000 registered employees. The largest company is Hamstad AS with 153 employees. The oldest, K Lund AS, was founded in 1964. 76% are limited companies.

Active companies: 204
New in the last 12 months: 21
Registered employees: 1,000
Share of limited companies: 76 %

The largest companies in plumbing, heat and air-conditioning installation in Trondheim

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	Hamstad AS	936164226	153	NOK 480.6 m	1986
2	K Lund AS	917810346	152	NOK 237.9 m	1964
3	Flow Trøndelag Vvs AS	817921892	62	NOK 138.6 m	2016
4	H Granbo Vvs AS	929081323	51	NOK 86.5 m	2022
5	Ips Norway AS	923370064	41	NOK 125.5 m	2019
6	Rørfunn AS	974437589	39	NOK 82.4 m	1995
7	Økovent AS	912592715	36	NOK 58 m	2013
8	Heimdal Industriservice AS	971230177	31	NOK 63.2 m	1994
9	Mælen Blikk Og Ventilasjon AS	919653191	28	NOK 50 m	2017
10	Teknisk Ventilasjon AS	980217345	26	NOK 75.1 m	1998
11	Haralds Vvs AS	980859762	25	NOK 38.6 m	1998
12	Ole Sivertsen AS	817842712	20	NOK 28.5 m	1976
13	Trondheim Vvs AS	935505836	20	NOK 37.8 m	2025
14	Værnes AS	917249431	19	–	1970
15	Aqua Rørfornying AS	925568201	19	NOK 22.6 m	2020
16	Tempe Blikk Service AS	937334052	18	–	2026
17	Rørlegger 1 AS	937912803	17	–	2026
18	Reftec AS	996926885	17	NOK 50.5 m	2011
19	Hadak AS	960330498	15	NOK 22.1 m	1991
20	Ventøk AS	927657104	13	NOK 37.5 m	2021
21	Bartnes AS	914851386	12	NOK 47.8 m	1987
22	Prorør AS	923116702	12	NOK 15.4 m	2019
23	Abs-Teknikk AS	936300669	12	–	2025
24	Badhuset AS	988072710	12	NOK 14.9 m	2005
25	Union Vvs AS	930755869	10	NOK 12.8 m	2022

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Newest companies in plumbing, heat and air-conditioning installation in Trondheim

Frequently asked questions

How many companies in plumbing, heat and air-conditioning installation are there in Trondheim?

The Register of Legal Entities lists 204 active companies in plumbing, heat and air-conditioning installation in Trondheim. 21 of them were registered in the last 12 months.

Which is the largest company in plumbing, heat and air-conditioning installation in Trondheim?

Hamstad AS is the largest by number of employees, with 153 employees. The organisation number is 936164226.

How many people work in plumbing, heat and air-conditioning installation in Trondheim?

The companies have 1,000 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 25 of the 25 largest companies have reported employees.

How long have there been companies in plumbing, heat and air-conditioning installation in Trondheim?

The oldest active company, K Lund AS, was founded in 1964. 76% of the companies are limited companies.

Explore further

Plumbing, heat and air-conditioning installation in nearby municipalities

Other industries in the same group in Trondheim

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.