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IWM/2526/FM/3462: Ground Source Heat Pump in Hangar 4 at IWM Duxford

Imperial War Museums

Awarded
works
SME-friendly

This tender has closed

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Key details

Contracting authority
Imperial War Museums
Public authority - central government
Region
London
Contract value
£150,884ex VAT
£181,061 inc VAT
Submissions closed
19 September 2025
Published
22 August 2025

Procurement

Contract period
10 October 2025 - 6 February 2026
4 months
Procedure type
Below threshold - open competition
CPV classifications
  • 42511110 Heat pumps
  • 45251141 Geothermal power station construction work
  • 45331000 Heating, ventilation and air-conditioning installation work
  • 71320000 Engineering design services

What happened

Imperial War Museums awarded this contract to Finn Geotherm UK Ltd worth £258,235 on 29 Oct 2025. The contract runs until 6 Feb 2026.

Description

Imperial War Museums (IWM) is seeking a qualified contractor to deliver the next phase of its low-carbon heating strategy at IWM Duxford. This project involves the installation of a ground source heat pump (GSHP) system in Hangar 4, replacing the existing oil-fired boiler serving office areas on both the north and south sides of the hangar.

Phases 1 and 2 of IWM’s GSHP implementation have successfully covered Hangars 2, 3, 5, and Buildings 200 and 74. Heat energy is sourced from underground water via bored holes on-site, transferred through plate heat exchangers in Building 68, and distributed via an ambient loop. Phase 3 (the current tender) will connect to the existing ambient loop infrastructure already in place from previous phases.

The scope includes detailed design development (based on a novated preliminary design), procurement, installation, and commissioning of all associated plant and equipment. A back-up electric boiler capable of meeting 100% of the heat load will also be integrated. All equipment will be housed within the designated plantroom.

Access Code : 4E67D4UP37

This initiative supports IWM’s broader commitment to sustainability, energy efficiency, and climate action, aiming to reduce operational costs and set a benchmark for environmentally responsible practices in heritage and public sector buildings.

For more information about this opportunity, please visit the Delta eSourcing portal at:

https://www.delta-esourcing.com/tenders/UK-UK-London:-Heat-pumps./4E67D4UP37

To respond to this opportunity, please click here:

https://www.delta-esourcing.com/respond/4E67D4UP37

Awarded supplier

Supplier
Finn Geotherm UK Ltd
Award value
£258,235
Award date
29 October 2025

Contact

Address
IWM London, Lambeth Road, London, SE1 6HZ

Identifiers

Buyer reference
FM3462
Notice ID
050906-2025
OCID
ocds-h6vhtk-058cef

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External ID: fts-ocds-h6vhtk-058cef • Added 6 August 2026