We are a specialized construction company with a constant concern for quality, work safety and the environment.

Thanks to our know-how and state-of-the-art equipment and products, we are able to ensure a competent and quality response in complex and highly technically demanding projects.

We build and renovate industrial and residential buildings, commercial and service areas, as well as social and cultural infrastructure.

We have always followed the requirements imposed by the market, not only in the private sector but also in the public sector, offering diversified and high value services in the field of Construction and Engineering.

We focus our work on the continuous satisfaction of our customers, assuming a commitment to excellence and dedication in everything we do. We base our work on innovation, efficiency and trust and we work daily to develop quality projects that last over time.

Building Maintenance

OPENLINE is a reference company in the market for the provision of maintenance services, we are the first company in Portugal certified in accordance with the NP 4492 standard – REQUIREMENTS FOR THE PROVISION OF MAINTENANCE SERVICES.

We ensure the preventive and corrective maintenance of your facilities, providing a set of integrated services that allow us to guarantee their proper functioning.

We promote the execution of equipment correction, inspection and control services, validating the performance and quality of the interventions carried out.

Factors such as acquired experience, available economies of scale, synergies and the ability to mobilize resources position OPENLINE as an active and valuable operator in the field of developing new partnerships.

We streamline maintenance operations through our platform, where we automate workflows, distribute tasks and keep the customer up to date with everything that goes on during the maintenance service, from the execution of plans to the state of equipment, compliance with standards , maintenance costs and KPIs (Key Performance Indicator).

Integrated Global Maintenance:
  • Electricity
  • Structured Voice and Data Networks
  • General and Specialized Mechanics
  • locksmith
  • Plumbing
  • Automation
  • Centralized Technical Management
  • Transformation Stations
  • Emergency Generator Sets
  • Hotel Equipment
  • Video Surveillance - CCTV
  • Automatic Intrusion Detection Systems - SADI
  • Fire Detection and Fighting - CDI
  • Hydropressor Plants
  • Swimming Pool Treatment and Control Systems

HVAC Maintenance:
  • Cold and Hot Water Production Units - Chiller's and Heat Pumps
  • Thermal Power Stations - Boilers and Steam Generators
  • Circulation Pumps and Fluid Networks
  • Air Treatment Units - UTA's
  • Fan coils and fans
  • Direct Expansion Systems - Split, Multisplit, VRV and Rooftop
  • Aerial Networks - Verification and Sanitation of Conducts
  • Indoor Air Quality - IAQ Parameters Assessment

All maintenance procedures are carried out by qualified technicians, and in the HVAC area, technicians are duly accredited by ADENE, namely TRM2 and TRM3 - Technicians Responsible for the Installation and Maintenance of Technical Systems in accordance with Decree-Law 102/ 2021 (RECS) and Technicians for Handling Fluorinated Gases with Greenhouse Effects in accordance with Decree-Law 145/2017.


We offer diversified installation services for mechanical and electrical HVAC systems, operating within the scope of public and private works.
  • Heating,
  • Ventilation,
  • Air conditioning,
  • thermal solar,
  • Centralized Technical Management,
  • Monitoring,
  • Industrial and Commercial Cold,
  • Smoke Exhaust Systems
  • Plumbing.

Attentive to the evolution of the market, OPENLINE invested in the acquisition of a specialized CNC for cutting panels for the manufacture of self-supporting ducts. Supported by state-of-the-art technology and specialized technicians, we provide production and/or cutting services with the advantages, ease of installation and versatility that everyone knows.

Energy and Services

With broad competences to support the Water, Gas and Electricity sectors, we offer specialized assistance and installation support services.

Water and Sanitation
  • Requalification of Infrastructures;
  • Construction and Maintenance of Pipelines;
  • Construction and Maintenance of Distribution Networks;
  • Wastewater Treatment Plants;
  • Home Technical Assistance;
  • Leak repair.

  • Construction of Networks;
  • Network repair;
  • Requalification of Infrastructures;
  • Installation, Maintenance and Reconversion of Burning Devices;
  • Maintenance services;
  • Technical assistance;
  • Project.

  • Installation;
  • Requalification of Infrastructures;
  • Communications and Networking;
  • Maintenance services;
  • Technical assistance.

  • Maintenance services;
  • Technical assistance.

Contact us for more information: