What Klimatror does

Klimatrör AB is a privately held Swedish VVS (värme, sanitet — heating, plumbing, and sanitation) specialty installation contractor headquartered in Hägersten, Stockholm. Founded in 1987 and operating today as a wholly-owned subsidiary of Instalco Group (one of the Nordic region's largest installation groups, with approximately 150 subsidiaries, over 6,000 employees, and ~14 billion SEK in annual revenue across Sweden, Norway, and Finland), Klimatrör delivers project-based installation services for property developers, real estate owners, housing associations (bostadsrättsföreningar), municipalities, and prime construction contractors across the Stockholm metropolitan area. The company's stated mission is to provide qualified technical expertise, deliver projects without defects, and meet contracted timelines.

The company's core service offering spans district heating (fjärrvärme) installations certified for the Fortum network, pipe installations (rörinstallationer) for new construction and renovation, geoenergy (geoenergi) plants using bedrock boreholes combined with heat pumps, heat recovery and heat pump systems, complete bathroom and kitchen pipe replacements (stambyte), and ongoing service and maintenance. Personnel carry certifications including Säker Vatten (Safe Water), Heta arbeten (Hot Work), Fortum district heating compliance, welding licenses, and Bas-P/Bas-U construction work environment coordination. Klimatrör is increasingly active in sustainability-classified (Hållbarhetsklassat / Miljöbyggnad) projects, where its geoenergy and heat recovery capabilities address energy efficiency demands from REITs and public sector clients.

Klimatrör earns revenue primarily through lump-sum and cost-plus professional services contracts, functioning either as totalentreprenör (general contractor for VS scope) or underentreprenör (specialty subcontractor) for primes such as PEAB, In3prenör, Arcona, and TL BYGG AB. Order values on disclosed reference projects range from approximately 53 million SEK (Medborgarhuset + Stockholmsverken, 2018) to 85 million SEK (Forskaren, 2022-2023), with revenue recognized upon project completion. Pricing is project-quoted and not publicly disclosed; payment terms are 30 days from invoice date. Customer acquisition is sales-led through direct engagement, industry referrals, and collaborative procurement, supplemented by Instalco Group's brand presence and the company's own website news publications documenting reference projects.

Name

Klimatror

Legal name

Klimatrör AB

Website

https://klimatror.se

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

11–50 employees

Short description

Klimatrör AB is a Stockholm-based VVS (heating, plumbing, sanitation) specialty installation contractor and Instalco Group subsidiary, delivering district heating, geoenergy, heat pump, and pipe replacement services to property developers, housing associations, and construction primes across the Stockholm metropolitan area.

Ownership category

akta.pro rank

Product category

Plumbing and Heating Installation Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing, Heating, and Air-Conditioning Contractors (23822)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Fire Protection Systems Contracting (Sprinklers, Alarms, Suppression) (IMAFALAD)

Keywords

• HVAC installation services
• District heating systems
• Plumbing and pipework
• Heat pump installation
• Building renovation services

Headquarters

HQ city

Hägersten

HQ country

Sweden

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. VS Installation Services: Klimatrör generates revenue through installation contracts for heating, plumbing, and ventilation systems. Revenue is project-based and typically earned through lump-sum contracts or cost-plus arrangements. Projects range from small renovations to major infrastructure installations worth tens of millions of SEK. The company operates as both general contractor (totalentreprenör) and specialty contractor (underentreprenör).
2. Service and Maintenance: Ongoing service department with project managers and pipe/service technicians handling maintenance work and service assignments for existing installations.
3. Project Contracts: Large-scale projects with order values ranging from 53 million SEK (Medborgarhuset and Stockholmsverken combined) to 85 million SEK (Forskaren project). Revenue recognized upon project completion and acceptance.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Klimatrör AB is a Stockholm-based VVS (heating, plumbing, ventilation) installation company specializing in district heating connections, pipe installations, heat pump and geoenergy systems, and building renovations for residential and commercial properties. The company executes both totalentreprenad (main contractor) and underentreprenad (subcontractor) roles, delivering projects through certified installation teams with Fortum district heating, Säker Vatten, Heta arbeten, and welding credentials. Services span new construction, complete renovation, stambyte (pipe replacement), energy-efficient heating solutions, and ongoing service and maintenance for the Stockholm metropolitan area.

Product overview

Klimatrör AB is a specialized VVS (heating, plumbing, and ventilation) installation company offering a comprehensive range of installation and service solutions as part of the Instalco Group. The company's core offerings include district heating (fjärrvärme) installations, general pipe installations, heating and sanitation work (VS-arbeten), service and maintenance operations, building conversions and renovations, heat pump installations (including geothermal/geoenergy systems), and cooling installations. The company operates through specialized departments: a service department for ongoing maintenance, a heating department for district heating and heat pump work, and a conversion department for tenant adaptations and residential renovations. Klimatrör serves primarily in the Stockholm region for various clients including property developers, housing associations, and commercial building owners.

Differentiator

Problem solved

Functional benefit

Products and services

• District Heating (Fjärrvärme) Installationer Installation and maintenance of district heating systems, including connection to Fortum's district heating network with certified personnel. Service for residential and commercial property owners seeking heating infrastructure.
• Pipe Installations (Rörinstallationer) Comprehensive pipe installation services including new installations, conversions, and replacements (stambyte) for residential and commercial properties. Targeted at property developers, housing associations, and construction companies.
• VS-arbeten (Heating and Sanitation Work) Complete heating and sanitation installation work, including total contracts for VS projects in building construction and renovation. Delivered as both main contractor (totalentreprenör) and subcontractor (underentreprenör).
• Heat Pump Installations (Värmepumpinstallationer) Installation of heat pumps and geothermal systems including district heating substations and energy machines for energy-efficient heating solutions.
• Geoenergy Systems (Geoenergianläggning) Geoenergy plant installations including heat pump systems using energy extracted from bedrock through boreholes. Includes energy drilling and integration with existing district heating/cooling systems.
• Service and Maintenance Operations Ongoing service department operation with project managers and pipe/service technicians handling maintenance work and service assignments for existing VS installations. Targets property owners with installed heating and plumbing systems requiring upkeep.
• Building Conversions and Renovations Building conversion and renovation services including tenant adaptations and residential renovations, delivered through a dedicated conversion department alongside the heating and service departments.

Quantifiable outcome

• Delivered VS installations for 85 million SEK project at Forskaren landmark building
• +2 more outcomes

Named customers17 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered core.

• VVS-KraftcoreStrategic or Co-development Partner · 7 March 2022Instalcobolagen Klimatrör, VVS-Kraft, and Instair received a joint assignment for the Forskaren project. VVS-Kraft handles cooling, heating, water, drainage, and recycling system installations alongside Klimatrör.
• InstaircoreStrategic or Co-development Partner · 7 March 2022Part of the Instalco joint project team for Forskaren building. Instair is responsible for air handling system installations, complementing Klimatrör's VS work.
• PEABcoreChannel Partner/ Reseller/ Distributor · 2 February 2018Klimatrör is participating in a collaborative project (samverkansprojekt) with PEAB for the Medborgarhuset Stockholm renovation. PEAB is the main contractor and Klimatrör provides VS installation services.
• In3prenörcoreChannel Partner/ Reseller/ Distributor · 2 February 2018Klimatrör participates in collaborative projects with In3prenör, serving as VS contractor for multiple projects including Stockholmsverken, Allégården, The Brick, and Pyramiden 20.
• PoB:s ElektriskacoreStrategic or Co-development PartnerKlimatrör collaborated with sister companies PoB:s Elektriska (electrical) and OTK Klimatinstallationer (ventilation) within the Instalco Group for The Brick residential conversion project.
• OTK KlimatinstallationercoreStrategic or Co-development PartnerSister company within Instalco Group handling ventilation installations alongside Klimatrör's pipe work for The Brick project conversion of LM Ericsson headquarters to 350 residences.
• InstalcocoreOthersKlimatrör AB is a subsidiary of Instalco AB, one of the Nordic region's leading installation companies. Instalco operates through approximately 150 subsidiaries with over 6,000 employees across Sweden, Norway, and Finland. The group generates annual revenue of approximately 14 billion SEK.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• VVS-Kraft: Instalco sister company specializing in VVS installations in the Stockholm region. Frequently collaborates with Klimatrör on joint assignments (e.g., Forskaren) and is the most directly comparable peer in scope, customer base, and delivery model.
• Rörgruppen Stockholm: Stockholm-based VVS/rör installation contractor serving property developers, housing associations, and municipalities with heating, plumbing, and pipe renovation services — direct overlap with Klimatrör's stambyte and district heating work in the same geography.
• Sandbäcken: Swedish VVS contractor active in Stockholm and Mälardalen, offering heating, plumbing, and ventilation installations for residential and commercial projects. Direct competitor for the same stambyte, district heating, and new-build VS tenders Klimatrör pursues.
• OTK Klimatinstallationer: Instalco sister company focused on ventilation and climate installations, collaborating with Klimatrör on bundled multi-trade projects like The Brick. Comparable customer base and project types, though Klimatrör adds heating and pipe work.
• Comforta: Nordic installation services group (acquired YIT's installation business) operating across Finland, Sweden, Norway, and the Baltics in HVAC, plumbing, and electrical work. Closely comparable to Klimatrör in service mix and Nordic property/construction customer base.

Others

• AFRY (ÅF): Large Nordic engineering, design, and consulting firm (formerly ÅF) active in sustainable building and district energy design. Adjacent rather than direct competitor: AFRY designs the systems that installation contractors like Klimatrör then build out.

Broad incumbents

• Instalco (parent): Listed Nordic installation group with 150 subsidiaries and 14 billion SEK revenue; Klimatrör is one of these subsidiaries. Relevant as the parent platform shaping Klimatrör's commercial reach, branding, and access to multi-trade project consortia.
• Caverion: Nordic-headquartered installation and maintenance provider for buildings and infrastructure with strong presence in Sweden. Overlaps with Klimatrör in heating, plumbing, ventilation, and energy-efficiency retrofits for commercial and residential property owners.
• Bravida: Sweden's largest publicly listed multi-technical installation and service contractor (electrical, heating/plumbing, ventilation) with operations across the Nordics. Bravida competes directly for the same enterprise VVS tenders Klimatrör bids on, including district heating connections, pipe renovations, and HVAC installations for property owners and GCs in Stockholm.
• Assemblin: Major Nordic installation contractor (electrical, HVAC, plumbing) operating across Sweden, Norway, and Finland. Directly competes with Klimatrör for VS tenders in the Stockholm region and brings multi-trade scale similar to Instalco.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Klimatror