Construction & Installation

To protect the performance specification achieved at design, it is important to monitor any variance between the contractor’s design and the M&E design, particularly with respect to any proposed value engineering. Furthermore, there have been instances in the industry of inappropriate equipment selection or contractor-proposed design changes that have led to:

• Significant additional capital costs
• Delays to programme
• Long term performance impact and/or O&M costs
• Design/performance specification not being met due to altered design

To avoid such issues, FairHeat reviews the contractor’s design pack (including updates to design, technical submittals for key equipment and description of operations), with FairHeat providing feedback to the design team in the review process. FairHeat carries out review and comments on contractor design to ensure the approved consultant design has been met by the contractor drawings.

Often changes can be made without due consideration at this stage due to cost/supply chain concerns, however this additional design stage aids to reduce these pain points and ensures that the impacts of all alterations are detailed and weighed up.

FairHeat reviews the contractor’s technical submittals for key equipment and provides feedback to the design team in the review process. This includes:

• Plant room and network: boilers, heat pumps, CHP, thermal storage, plate heat exchangers, pumps, water treatment equipment, pressurisation and expansion units, control valves, general valves/fittings/ancillaries, commercial/communal space heating equipment, BMS, pipework (above and below ground), insulation
• Consumer connections and heat system: HIUs, pipework, insulation, space heating equipment/ancillaries, DHW ancillaries
• Metering and billing: heat meters (plant room/network/dwelling), pre-payment/AMR system

At the start of this stage, checklists are provided prior to the production of technical submittals to ensure that all relevant information is detailed within. This additional information aids the process to ensure that all parties have complete clarity on the equipment to be specified, and avoids generalised submissions, which will align with future HNTAS requirements and support with compliance.

A simple and effective Descriptions of Operations (DesOps) needs to be produced by a controls specialist, outlining how plant room equipment is to be controlled and operated through all modes of operation and levels of demand.

The DesOps can have a significant effect on the efficiency (and operability) of the plant room. Thus, considerable thought is expected to ensure that the DesOps achieves the design intent and that the control strategy maximises efficiency and stability through all modes of operation.

FairHeat will review the LTHW DesOps to ensure the appropriate level of detail has been produced for control philosophy capturing response of system to changing demand.

FairHeat will carry out onsite inspections and review heat network installation at key stages throughout the construction phase. FairHeat’s scope allows for inspections to review installation against the finalised design and specification as well as for good workmanship. These cover review of pipework and equipment installation, as well as subsequent inspections of insulation installation in the following areas:

• Energy centre
• Substations
• Network
• Dwellings
• Commercial units
• Buried pipework

FairHeat will aim to attend site as early as possible to ensure that issues can be picked up early and correct installation can be benchmarked before the full rollout of installation across the site. Further support will be provided on subsequent visits to ensure issues have been amended. This collaborative approach and regular site attendance will result in consistency of installation and assurance that the network has been installed as per the design.

Prior to installation taking place, FairHeat may review installation method statements if access and coordination is an issue, particularly in retrofit scenarios where pipework/equipment may need removing prior to additional installation.

When developers are connecting to wider heat networks operated by ESCos, there are additional considerations, particularly with regards to technical requirements and heat supply and connection agreements.

FairHeat will be able to feed into this stage to ensure that support is provided in ensuring that ESCo technical requirements are being met through construction stage, and any alterations are documented in derogations trackers.

Under the Construction (Design and Management) Regulations (CDM) and the Building Safety Act (BSA), the Principal Designer plays a critical role in managing design risk, regulatory compliance, and health & safety throughout the design and construction phases of retrofit heat network projects. FairHeat provides comprehensive Principal Designer support, ensuring that clients meet their statutory obligations while delivering safe, compliant, and high-performance heat networks.

FairHeat acts as the Principal Designer for retrofit projects, providing expert oversight in:

Regulatory Compliance & Monitoring:

Ensuring Principal Designer responsibilities under CDM and BSA are met.

Supporting compliance with Building Regulations across all retrofit scopes.

Competency & Risk Assessment:

Reviewing designer and contractor competency and assisting with necessary appointment letters.

Conducting design and risk assessments to identify and mitigate potential issues.

Health & Safety Oversight:

Producing the Pre-Construction Information File, ensuring key safety requirements are addressed.

Establishing and reviewing H&S file structures throughout the construction process.

Design Change Management:

Conducting design change reviews to assess the impact on safety, compliance, and project outcomes.

Building Safety Regulator (BSR) Support for Higher-Risk Buildings:

Providing detailed guidance and supporting applications using our trusted supply chain.

FairHeat’s Principal Designer support provides clients with a structured, compliance-driven approach to risk management, design safety, and regulatory adherence. Our deep expertise in retrofit projects and strong industry relationships ensure that safety, compliance, and best practices are embedded throughout the design process.

Retrofitting operational heat networks requires experienced construction management to ensure projects are completed safely, efficiently, and in full compliance with legal, statutory, and technical requirements. As Principal Contractor, FairHeat provides a turnkey construction management solution, handling everything from pre-construction planning to full project execution. We ensure that heat network upgrades are delivered on time, within budget, and to the highest industry standards.

A well-planned pre-construction phase is key to ensuring smooth project execution. FairHeat provides:

Strategic Delivery Development

• Comprehensive project planning to align with client goals, timelines, and budget constraints.
• Detailed cost advisory services to ensure clear financial expectations and feasibility.

FairHeat helps clients structure and allocate budgets effectively to prioritise heat network upgrades while aligning with funding and regulatory requirements.

Procurement & Invitation to Tender (ITT) Management

• End-to-end procurement process, including contractor selection and management.
• Use of industry-standard frameworks (JCT, NEC) to secure reliable contracts and cost control.

FairHeat is a supplier on several frameworks, such as the Crown Commercial Services (CCS) DMR framework, allowing clients to directly engage us, saving time and ensuring procurement compliance. Our structured tender process typically secures contractor bids within 5% of projected project values, demonstrating the quality of our supply chain and documentation.

Health & Safety (H&S) and CDM Compliance

• Appointment of Principal Designer and Principal Contractor roles to comply with CDM 2015 & BSA 2022.
• Comprehensive risk assessments and H&S planning to ensure a safe working environment.

FairHeat brings extensive experience in both Principal Designer and Principal Contractor roles, ensuring that all CDM and H&S responsibilities are managed from start to finish. We help clients understand and fulfil their dutyholder obligations, minimising legal risks.

Schedule Development & Resource Planning

• Detailed project scheduling, defining milestones, timelines, and labour/resource allocation.
• Optimised workforce planning to ensure site efficiency and prevent delays.

FairHeat’s strong relationships with a pre-vetted supply chain allow us to allocate resources efficiently. Our dedicated Project Delivery team, including experienced project managers and a dedicated project planner, ensures seamless project scheduling and execution.

During the construction phase, FairHeat takes full responsibility for project execution, ensuring that all aspects of the retrofit are completed to the highest standards.

Full Turnkey Solutions

• Managing all aspects of construction, procurement, and project oversight.
• Close collaboration with Quality Assurance teams to maintain high project standards.

FairHeat integrates Quality Assurance (QA) and Project Delivery teams, providing a cradle-to-grave service—from feasibility studies to final project handover. This ensures that lessons from optimisation studies are carried through into project execution, avoiding common pitfalls.

Principal Contractor Responsibilities & CDM Compliance

• Ensuring full compliance with CDM 2015 and H&S regulations.
• Developing and maintaining risk assessments, H&S files, and site safety plans.

FairHeat has built a high-quality, reliable supply chain that aligns with our processes, ensuring that all legal and safety standards are upheld at every stage of delivery.

Financial & Cost Control

• Transparent, open-book financial tracking, ensuring budget adherence.
• Client-approved cost authorisations before major expenditures.

FairHeat’s open-book cost management approach provides full financial transparency, enabling clients to make informed and confident decisions on every expenditure.

Risk Management

• Proactive risk identification and mitigation, from design through to construction.
• QA-driven risk assessments to ensure design intent is met on-site.

FairHeat provides visibility across all project phases, from feasibility through to handover. We integrate risk management processes from initial designer risk assessments to final H&S residual risk registers, ensuring that risks are proactively addressed and communicated.

Grant Funding Reporting

• Full compliance with funding requirements, ensuring timely reporting.
• Support in generating reports and maintaining documentation to meet funder expectations.

FairHeat has supported clients in managing compliance for GHNF, HNES, and PSDS grants, ensuring projects meet funding conditions and reporting obligations.

Health & Safety Management

• Implementation of robust H&S policies and site safety monitoring.
• Dedicated H&S Advisor overseeing construction site compliance.

FairHeat operates an internal H&S committee and reporting system, allowing for real-time issue identification and learning. Our dedicated H&S Advisor strengthens site safety measures.

Stakeholder & Contractor Management

• Clear communication plans ensuring alignment between all stakeholders.
• Proactive issue resolution through structured engagement.

FairHeat engages with stakeholders early in the project lifecycle, ensuring relationships are well established before construction begins. Our strong supply chain partnerships allow us to maintain high service quality throughout the project.

Commercial & Quality Management

• Detailed financial oversight, ensuring transparent reporting.
• Strict quality control processes, ensuring adherence to design specifications.

FairHeat’s Project Delivery department includes a dedicated team to ensure financial clarity and contractual adherence. We also work closely with QA specialists and are ISO 9001 & ISO 14001 accredited.

Progress Reporting, Documentation Control & Change Management

• Regular progress updates to ensure project alignment.
• Structured change management processes to minimise disruption.

FairHeat’s structured change management system ensures that all modifications are tracked, communicated, and implemented efficiently, avoiding project delays and cost overruns.

FairHeat’s Principal Contractor service ensures that heat network retrofits are delivered safely, efficiently, and in compliance with all regulatory and contractual obligations. With a dedicated project management team, extensive retrofit experience, and a strong supply chain, we provide a fully integrated, high-quality delivery service that prioritises safety, cost control, and long-term system performance.

FairHeat carry out inspections of the energy centre equipment and services throughout the construction phase, to ensure the installation is progressing in compliance with design, specification and workmanships standards.

Due to the size of services and equipment within the energy centre, use of offsite prefabrication methods, FairHeat’s approach is flexible and tailored to each project, but aims to identify non-compliance at the earliest possibility to prevent the need for remedial action and programme delays.

Our typical approach involves:

• Contractor Design & Technical Submittal Reviews: Depending on the contractual arrangement for the construction phase, there will be varying levels of design/equipment selection responsibilities with the contractor. Whether it is reviewing Value Engineering proposals or ensuring compliance with original design, we offer client side technical support in ensuring all Contractor proposals are suitable and do not compromise long term performance.
• Installation Witnessing: Given the complexity of large scale energy centres, coupled with the time and investment that has gone into the detailed design to ensure it is optimised, ensuring the installation meets this specification exactly is critical. Our focussed, quality benchmarking inspections provide client’s with the confidence that the installed system is in full compliance with the design & specification.

FairHeat provides expert support on buried district heating networks, ensuring works meet design specifications, manufacturer guidance, and industry best practices.

Our team carries out inspections at key stages of the construction process, offering oversight on both quality and compliance. With a robust project management system and a collaborative approach, we ensure seamless coordination across stakeholders, contractors, and specialists.

Key activities include:

• Pre-backfill inspections to verify correct installation of pipework, joints, foam pads, and structural components before burial.
• Joint and sleeving inspections, including review of welding certificates, alarm wire testing, and NDT results.
• Supervision of backfilling and compaction to confirm correct layering and material standards, ensuring long-term pipework integrity.
• Chamber construction inspections to ensure access points (e.g., valves, vents) meet maintenance, safety, and local authority standards.
• Concrete sampling and testing to validate structural strength and material compliance.
• Reinstatement oversight to ensure adherence to local authority highways requirements and preserve stakeholder relationships.
• Monitoring of chamber tagging and structural labelling for traceability and operational clarity.
• Building entry works inspections to ensure proper sealing and installation at key transition points.

Additionally, FairHeat offers dedicated support for leak detection system commissioning. We witness and review alarm wire testing, CAD distance reconciliation, and provide clients with defect analysis and guidance on engaging leak detection specialists. Our goal is to ensure clients inherit a fully functional and monitorable leak detection system at handover—critical for long-term performance and reliability.

FairHeat provides expert commissioning support for all stages of district heating network activation, ensuring each system is safe, clean, and optimised for long-term performance. Our engineers bring extensive experience in supervising and inspecting critical commissioning activities, acting as the client’s independent agent throughout the process.

Key areas of support include:

• Pressure Testing (Hydraulic & Air): We witness and verify pressure tests in line with specifications and BSRIA guidance to confirm the structural integrity and watertightness of the pipework and fittings.
• Pipe Cleaning (Pigging & Flushing): We oversee mechanical cleaning processes—such as foam or ice pigging and high-velocity flushing—to remove debris and contaminants prior to operation.
• Biocide Wash: We monitor biocide dosing, circulation, and flushing to eliminate bacterial growth that may develop during stagnant periods after initial fill.
• Chemical Cleaning: Our engineers ensure proper dosing and sample testing throughout the iron oxide removal process, verifying that iron levels stabilise and that all contaminants are fully flushed from the system.
• Operational Water Fill (Demineralised & Softened): We witness on-site water testing for conductivity, oxygen, and hardness levels, ensuring correct filling methods are applied for both large and small systems. Independent lab testing can also be arranged where required.
• Passivation & Water Treatment: We verify that the network is dosed with the correct passivation chemicals to protect metal components and maintain the required pH and nitrite levels for corrosion control.
• Water Sampling & Analysis: Following treatment, we support ongoing water quality testing to ensure compliance with BSRIA guidelines and long-term system health.
• Livening of the Network: Once the network meets performance criteria, we oversee the safe livening of the system—ensuring bypasses, loops, and air vent strategies are correctly implemented. If the system remains inactive post-commissioning, we assist clients in managing water circulation to prevent stagnation and bacterial growth.

With a deep understanding of industry standards and on-site realities, FairHeat ensures every commissioning phase is delivered to the highest quality—protecting system integrity and maximising lifecycle performance.