The sharpest edge of the installations

QMG is a leading installations and technical property service group in Finland. We belong to the Nordic Nimlas Group. QMG consists of over 40 local companies excelling in installation projects, contracting, maintenance, and services. QMG employs more than 1300 professionals around the country.

nimlas group expands to Norway

QMG’s parent company Nimlas Group acquires Konstel, a leading Norwegian electrical contracting group. After the transaction, Nimlas Group is one of the leading Nordic installations and technical property service groups.


Heating and sanitation

Our companies perform in numerous heating and sanitation projects across the country every day.


Ventilation projects aim at ensuring indoor air quality and energy-efficient ventilation.


Cooling improves the living comfort, functionality and safety of working spaces in many industries.


Refrigeration technology guarantees the cold chains of food, healthcare and other sectors.


Working with electricity brings you in touch with advanced and rapidly developing technology – as well as local service business.

Building automation

A successful automation project is based on a comprehensive understanding of the building and its technical installations.

Security systems

Security technology is meaningful know-how – it helps protect property, health or life.


Sprinklers belong to modern construction and they create safety for residents and other users and property owners.

Fire safety

Fire safety is built i.a. on firestops, safety and signal lights, emergency fire hydrants, alarm systems, fire extinguisher maintenance as well as civil shelter maintenance.

Technical services

Maintenance, repairs and modernisations ensure the functionality of technical solutions and protect the value of the building.

Industrial services

QMG delivers heating and sanitation, ventilation, electrical and automation projects and services for industrial properties and processes.

Gas delivery systems

Installation and maintenance of gas delivery systems have been part of Calto’s services since 1966. Company is a supplier of both medical and industrial gas systems.


Korkeasaari zoo

Vesijohtoliike J. Laitinen has been operating in the Helsinki Metropolitan Area since 1998. The most…
Heating and sanitation

Helsinki-Espoo Metro – Länsimetro

Due to the new westward metro line’s length and diversity, the Länsimetro project was a…
Electrical contracting

The hospital district of Southwest Finland

Calto has a long history of building engineering in the healthcare sector. Its roots go…
Electrical contracting
Gas delivery systems
Heating and sanitation
Technical services
Southwest Finland

News & Blogs

Parmaco and Mikenti extend their partnership

Modular buildings are a much-needed alternative to construction. Municipalities and other property owners need flexible…

QMG acquires Rannikon Sähköpiste in Northern Ostrobothnia

QMG acquires electricity contractor Rannikon Sähköpiste’s business in Pyhäjoki and Raahe, Northern Ostrobothnia. Rannikon Sähköpiste…

QMG acquires electricity contractor Vaasan Sähköpalvelu

QMG acquires Vaasan Sähköpalvelu’s electricity and security system business. The company will become a part…

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