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Appointment of a Contractor for the flushing/treatment of heating systems

Royal United Hospitals Bath NHS Foundation Trust

This public procurement record has 1 release in its history.

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28 Jul 2026 at 09:36

UK7 - Contract Details Notice
Summary of the contracting process

Royal United Hospitals Bath NHS Foundation Trust procured works to flush and treat heating systems as part of its wider decarbonisation project. The requirement covers six low-temperature hot-water systems serving the Wolfson, MRI, South, X-Ray, Z-Level and Central plant areas in Bath. It includes the supply, installation and commissioning of ENWA EnwaMatic side-stream filtration and water-treatment units, automated backwash controls integrated with the building management system, dedicated circulation pumps and break tanks. The solution is intended to control corrosion, scale, suspended solids, magnetite, air ingress and bacterial growth potential, improving heating efficiency, reliability and plant longevity while reducing maintenance and energy losses. Manufacturer-led commissioning is required to validate equipment warranties and operating parameters.

The procurement is complete following a below-threshold limited competition. One lot was awarded to Intoheat Ltd, and the award is active. The award date was 17 July 2026, with the contract signed on 17 July 2026. The contract runs from 20 July 2026 to 31 March 2027. Its value is £99,921 excluding VAT, or £119,905 including VAT. The main category is works, covering engineering and construction works. The contract is for one completed requirement managed by Royal United Hospitals Bath NHS Foundation Trust, with the awarded contractor responsible for delivering the heating-system treatment and associated equipment, installation and commissioning across the Trust’s estate.

This procurement demonstrates demand from an NHS estates operator for specialist water treatment and filtration of low-temperature hot-water heating systems, linked to energy efficiency, decarbonisation and protection of critical infrastructure. A credible future competitor would need practical capability in heating-system flushing, water-quality management, corrosion and scale control, side-stream filtration and air removal. Relevant delivery experience would include supplying and installing treatment units across multiple plant areas, providing dedicated pumps and break tanks, and integrating automated controls with building management systems. Suppliers would also need the capacity to coordinate delivery and installation in an operational hospital environment, work across several separate systems, and provide manufacturer-backed commissioning that supports equipment warranties and verifies performance against design requirements.

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Notice Information

Notice Title

Appointment of a Contractor for the flushing/treatment of heating systems

Notice Description

The Royal United Hospitals NHS Foundation Trust has identified an urgent requirement for the flushing/treatment of heating systems as part of its wider Decarbonisation Project. The Trust is seeking to improve the operational efficiency, reliability and longevity of several Low Temperature Hot Water (LTHW) heating systems across the estate through the implementation of a comprehensive water treatment and side-stream filtration solution. Docusign Envelope ID: 17C14E0A-B843-84EA-8335-50B8813EFC76 The existing heating systems require ongoing protection from the adverse effects of corrosion, scale formation, suspended solids, magnetite accumulation and air ingress, all of which can reduce system efficiency, increase energy consumption and contribute to premature plant failure. As part of the Trust's decarbonisation objectives, maintaining optimal water quality within these systems is essential to support efficient heat generation and distribution, reduce energy losses and minimise maintenance requirements. The proposed solution comprises the installation and commissioning of ENWA EnwaMatic(r) side-stream filtration and water treatment units across six separate LTHW systems serving the Wolfson, MRI, South, X-Ray, Z-Level and Central plant areas. The equipment provides continuous side-stream filtration to below 10 microns, pH control, corrosion inhibition, scale control, air removal and reduction of bacterial growth potential within the heating systems. The solution is designed as an alternative to conventional chemical dosing regimes and is intended to provide long-term maintenance of water quality and system performance. The requirement includes the supply of filtration units, automated backwash controls with Building Management System (BMS) integration, dedicated circulation pumps, break tanks, delivery and manufacturer-led commissioning. Manufacturer commissioning is required to validate equipment warranties and ensure the systems are operating in accordance with the intended design parameters. Delivery and installation of the water treatment solutions will support the Trust's objectives of improving heating system efficiency, reducing lifecycle maintenance costs, protecting critical infrastructure and contributing towards the Trust's sustainability and carbon reduction targets.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06d4d0
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/071041-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK7 - Contract Details Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Limited
Procurement Method Details
Below threshold - limited competition
Tender Suitability
Not specified
Awardee Scale
SME

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45220000 - Engineering works and construction works

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
£99,921 Under £100K

Notice Dates

Publication Date
28 Jul 20262 months ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
20 Jul 2026 - 31 Mar 2027 6-12 months
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Active

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Royal United Hospitals Bath NHS Foundation Trust
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
BATH
Postcode
BA1 3NG
Postcode Area
Bath
Country
England
Major Region (ITL 1)
TLK South West (England)
Basic Region (ITL 2)
TLK5 West of England
Small Region (ITL 3)
TLK52 Bath & North East Somerset and South Gloucestershire
Delivery Location
Not specified
Local Authority
Bath and North East Somerset
Electoral Ward
Newbridge
Westminster Constituency
Bath

Supplier Information

Number of Suppliers
1
Supplier Name

INTOHEAT LIMITED

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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