Source: https://tendernation.io/opportunities/01a13bc1-c149-728a-a580-aa06bc480b07/iwm2526fm3462-ground-source-heat-pump-in-hangar-4-at-iwm-duxford awarded GB open procedure Suitable for SMEs # IWM/2526/FM/3462: Ground Source Heat Pump in Hangar 4 at IWM Duxford [Imperial War Museums](https://tendernation.io/buyers/imperial-war-museums) Estimated value £150,884 Published 17 Nov 2025 Deadline Closed 19 Sept 2025 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Below-threshold contract Buyers cannot shortlist bidders on suitability before tenders are in, so everyone gets to submit a bid (except some larger works contracts). [Procurement Act 2023, section 85](https://www.legislation.gov.uk/ukpga/2023/54/section/85) - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender 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. To view this notice, please click here: [delta-esourcing.com/delta/viewNotice.html](https://www.delta-esourcing.com/delta/viewNotice.html?noticeId=994814099) Read full description ## CPV classification Heat pumps Geothermal power station construction work Heating, ventilation and air-conditioning installation work Engineering design services Source Find a Tender (UK) · Notice ocds-h6vhtk-058cef-2025-11-17T12:05:29Z [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-058cef-2025-11-17T12:05:29Z) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Imperial War Museums: past awards and live tenders](https://tendernation.io/buyers/imperial-war-museums) [Sector More Industrial machinery tenders](https://tendernation.io/sectors/industrial-machinery) ## More tenders like this [Lifting and handling equipment – Moyens de manutention motorisés · Union des Groupements d'Achats Publics · 57 days left · 15 Dec 2026](https://tendernation.io/opportunities/01a156a9-88ab-73d8-bf7c-44ba9139abc3/france-lifting-and-handling-equipment-moyens-de-manutention-motorises) [Lathes – Strung universal cu diametrul de prelucrare între Ø 320 ÷ Ø 380 mm · S Uzina Mecanica Plopeni SA · 32 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a156a9-89ea-7222-a30a-79ce9a09d1c7/romania-lathes-strung-universal-cu-diametrul-de-prelucrare-intre-o-320-o-3) [Water pumps – ΠΡΟΜΗΘΕΙΑ ΑΝΤΑΛΛΑΚΤΙΚΩΝ ΓΙΑ ΤΙΣ ΥΠΗΡΕΣΙΕΣ ΕΠΙΣΚΕΥΗΣ ΤΩΝ ΥΠΟΒΡΥΧΙΩΝ ΑΝΤΛΗΤΙΚΩΝ ΣΥΓΚΡΟΤΗΜΑΤΩΝ ΥΔΡΕΥΣΗΣ · ΔΗΜΟΤΙΚΗ ΕΠΙΧΕΙΡΗΣΗ ΥΔΡΕΥΣΗΣ-ΑΠΟΧΕΥΤΕΥΣΗΣ ΗΡΑΚΛΕΙΟΥ (Δ.Ε.Υ.Α.Η.) · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156a9-74e7-7383-82e1-b4c6885044d2/greece-water-pumps-promhthia-antallaktikon-gia-tis-yphresies-episkefhs-ton-y) [Miscellaneous special-purpose machinery – „Wood Vision Lab“ - das Technikum: "Absauganlage" · Wood Vision Lab GmbH · 7 days left · 27 Oct 2026](https://tendernation.io/opportunities/01a156a9-7ec8-7322-8445-8dcef4fed830/austria-miscellaneous-special-purpose-machinery-wood-vision-lab-das-tech) [Centrifuges – Centrifug och styrskåp - Hudiksvalls kommun · Hudiksvalls kommun · 2 days left · 21 Oct 2026](https://tendernation.io/opportunities/01a156a9-8986-70b3-a08f-2e4ab5fe626c/sweden-centrifuges-centrifug-och-styrskap-hudiksvalls-kommun) [Machinery and apparatus for filtering or purifying water – Systém na přípravu ultračisté vody · Vysoká škola báňská - Technická univerzita Ostrava · 34 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156a9-8de7-7383-a6dd-5533ea57df0c/czechia-machinery-and-apparatus-for-filtering-or-purifying-water-system-na-p)