At NetZero Group, we deliver comprehensive mechanical services for residential high-rise developments, providing end-to-end solutions from first fix installation through to commissioning and final handover. Our experienced project teams work closely with developers, main contractors, consultants, and design teams to ensure every system is installed safely, efficiently, and to the highest quality standards.

First Fix Mechanical Installation

The first fix stage forms the foundation of a successful mechanical installation. Our teams undertake the installation of all primary mechanical infrastructure throughout the building, ensuring full compliance with coordinated design and BIM requirements.

This includes the installation of rising mains for hot water, cold water, and heating services, together with horizontal distribution pipework serving individual apartments. We install central plant primary pipework connected to low-pressure hot water (LPHW) systems, heat interface units (HIUs), and heat pump solutions where specified.

Our scope also covers soil, waste, and vent systems, including vertical stacks and branch waste connections, alongside ventilation ductwork routes for MEV, MVHR, and centralised extract systems. Where applicable, gas distribution pipework is installed to apartment meters and central plant areas.

All pipework and services are carefully set out in accordance with coordinated BIM models, helping to minimise clashes and improve installation efficiency across the project.

Second Fix Mechanical Installation

During the second fix phase, our teams complete the installation and connection of all apartment-level mechanical services, preparing each unit for occupation.

This includes the fitting and commissioning of sanitary ware such as toilets, basins, baths, and shower systems. Heating installations are completed through the connection of radiators or underfloor heating manifolds, while kitchen plumbing systems are connected and tested, including sinks, isolation valves, and associated pipework.

Mechanical ventilation systems are finalised through the installation of extract fans, MEV units, or MVHR systems, depending on project requirements. Final connections are made to heat interface units and central plant-fed heating systems, with all associated pipework insulated, labelled, and finished to specification.

Central Plant and Energy Centre Installation

NetZero Group specialises in the installation of energy-efficient plant rooms and energy centres that form the heart of modern residential developments.

Our services include the installation of central heating plant such as high-efficiency boilers, air-to-water heat pumps, buffer vessels, hot water calorifiers, cylinders, pressurisation units, and expansion vessels. We also install primary and secondary distribution systems, including headers and associated pipework.

Where required, our teams coordinate closely with electrical contractors and building management system (BMS) specialists to ensure seamless integration of controls, monitoring systems, and energy management technologies.

Riser Installation and Off-Site Prefabrication

To improve programme efficiency, reduce on-site labour requirements, and enhance installation quality, NetZero Group incorporates off-site prefabrication wherever practical.

Prefabricated riser modules can be manufactured off-site and craned into position for rapid installation. These modules typically include LPHW risers, hot and cold-water services, and soil and waste stacks.

Close collaboration with structural engineers, architects, and design teams ensures accurate positioning and safe installation while minimising disruption to the wider construction programme.

Ventilation Systems

Effective ventilation is critical to occupant comfort, indoor air quality, and compliance with modern building regulations.

Our ventilation services include the installation of centralised extract and supply systems, individual apartment MEV units, and MVHR systems designed to maximise energy efficiency. We also install external louvres, grilles, roof-mounted fans, and associated ventilation infrastructure where required.

Upon completion, all systems are balanced, tested, and commissioned to ensure compliance with design airflow rates and regulatory standards.

Testing and Commissioning

Before handover, every mechanical system undergoes a rigorous testing and commissioning process to verify performance, reliability, and compliance.

Our commissioning activities include pressure testing of water and heating pipework, flushing and chlorination of domestic water systems, and full balancing of heating, ventilation, and hot water systems. This extends to heat interface units, radiators, and all associated distribution networks.

Comprehensive certification is provided upon completion, including BCAR documentation, gas certification where applicable, commissioning certificates, and all required testing records. We also prepare and issue complete handover documentation, including operation and maintenance manuals, as-built drawings, and test reports.

Quality Assurance and Project Handover

Quality is embedded throughout every stage of project delivery. Our teams carry out apartment-by-apartment inspections and snagging processes, benchmarked against approved reference units to ensure consistency across the development.

Weekly quality audits are recorded and monitored through our project management systems, providing transparency for clients and facilitating effective coordination between stakeholders.

As part of the final handover process, we provide training for facilities management teams and client representatives, ensuring a smooth transition into operation. A complete Operation and Maintenance (O&M) package is submitted in line with the project handover programme, supporting long-term building performance and maintenance requirements.

Delivering High-Rise Projects with Confidence

From complex energy centres and prefabricated risers to apartment fit-outs and final commissioning, NetZero Group provides a complete mechanical installation service for residential high-rise developments. Our focus on quality, coordination, sustainability, and programme certainty enables us to deliver projects safely, efficiently, and to the highest industry standards.

This version reads more like a professional website/service-page article rather than a technical scope list, while still retaining all key deliverables and capabilities.