---
title: "Direct Expansion (DX) Units Replacement - Non-section 12 Bakerloo and Victoria Lines (Tranche 3)"
ocid: "ocds-h6vhtk-069968"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-069968"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-069968.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-069968.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "TRANSPORT FOR LONDON"
published: "2026-05-14"
---

# Direct Expansion (DX) Units Replacement - Non-section 12 Bakerloo and Victoria Lines (Tranche 3)

Buyer: TRANSPORT FOR LONDON  
Current stage: Planning  
OCID: ocds-h6vhtk-069968

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[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-069968.json)

## Summary

The procurement process is currently in the planning stage, initiated by Transport for London (TfL), located at 5 Endeavour Square, London. This procurement is titled "Direct Expansion (DX) Units Replacement - Non-section 12 Bakerloo and Victoria Lines (Tranche 3)" and falls under the works category, specifically focusing on construction work. TfL aims to replace 700 Direct Expansion (DX) cooling units on the Bakerloo and Victoria Lines. Scheduled to start on 15 January 2029 and end by 14 January 2034, this initiative addresses operational risks and aligns with health and safety regulations. A future notice is anticipated on 21 October 2028. The contracting process follows the legal framework established by the UK Public Contracts Regulation 2023/54.

This tender presents a significant growth opportunity for businesses specialising in construction and HVAC systems, especially those with experience in large-scale infrastructure projects. Companies with the capability to manage long-term projects, comply with strict safety and climate legislation, and maintain critical railway operations are well-suited to compete for this contract. The replacement of these DX units promises not only immediate business opportunities but also the prospect of ongoing maintenance engagements, potentially reducing the financial maintenance burden for TfL and creating valuable partnerships.

## Notice

This is the replacement of the Non Section 12 BCV Direct Expansion (DX) Split cooling. This will be 700 units on Bakerloo and Victoria Lines. These systems in the Non-public equipment (Secure) rooms prevent operationally critical assets from overheating and failing (e.g., signalling, power, communications systems), potentially disrupting Railway Operations and in Non-public staff rooms they provide a safe working environment in compliance with Health & Safety at Work Regulations helping to reduce financial maintenance pressure long term and adhere to climate change legislation

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/044669-2026 |
| Notice type | UK1 - Pipeline Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 May 2026 |
| Submission deadline | Not specified |
| Future notice date | 21 Oct 2028 |
| Award date | Not specified |
| Contract period | 15 Jan 2029 - 14 Jan 2034 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Planned |
| Lots status | Planned |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | TRANSPORT FOR LONDON |
| Locality | LONDON |
| Post town | East London |
| Postcode | E20 1JN |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI4 Inner London - East |
| ITL 3 | TLI41 Hackney and Newham |
| Local authority | Newham |
| Electoral ward | Stratford Olympic Park |
| Westminster constituency | Stratford and Bow |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45000000 - Construction work

## Release History

- 14 May 2026 at 20:13 - Planning - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/044669-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/044669-2026
  14th May 2026 - Pipeline notice on Find a Tender

## Notice URLs

- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-069968. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-069968.json.