Scope
Reference
FM3462
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.
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Contract 1
Supplier
Contract value
- £258,235.12 excluding VAT
- £309,882.14 including VAT
Below the relevant threshold
Award decision date
29 October 2025
Earliest date the contract will be signed
17 November 2025
Contract dates (estimated)
- 18 November 2025 to 6 March 2026
- 3 months, 19 days
Main procurement category
Works
CPV classifications
- 42511110 - Heat pumps
- 45251141 - Geothermal power station construction work
- 45331000 - Heating, ventilation and air-conditioning installation work
- 71320000 - Engineering design services
Information about tenders
- 3 tenders received
- 3 tenders assessed in the final stage:
- 0 submitted by small and medium-sized enterprises (SME)
- 0 submitted by voluntary, community and social enterprises (VCSE)
- 1 supplier awarded contracts
- 2 suppliers unsuccessful (details included for contracts over £5 million)
Procedure
Procedure type
Below threshold - open competition
Supplier
Finn Geotherm UK Ltd
Wood Farm, Deopham Road
Attleborough, Norfolk
NR17 1AJ
United Kingdom
Region: UKH17 - Breckland and South Norfolk
Small or medium-sized enterprise (SME): No
Voluntary, community or social enterprise (VCSE): No
Contract 1
Contracting authority
Imperial War Museums
- Public Procurement Organisation Number: PHRL-5691-LLXM
IWM London, Lambeth Road
London
SE1 6HZ
United Kingdom
Telephone: 0207 416 5000
Email: erowberry@iwm.org.uk
Region: UKI44 - Lewisham and Southwark
Organisation type: Public authority - central government