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Mechanical & Electrical

Case Studies

From Retail Sites on the High Street, Commercial Installations through to Industrial Estates, DUNN AC have built an enviable reputation for delivering high quality projects on time, on specification and on budget.

The following is a small selection of the many case studies that have been completed successfully. Many more can be provided upon request.

Jardox, Sevenoaks logo

Jardox, Sevenoaks

Dunn AC Limited was appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all air conditioning, refrigeration and air handling assets across their business property.

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Southwark Crown Court, London logo

Southwark Crown Court, London

Dunn AC were appointed as the contractor to replace the faulty air conditioning systems serving court areas.

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HSBC logo

HSBC Piccadilly, London

Dunn AC were appointed as the contractor to replace the faulty air conditioning systems serving the customer areas.

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UK Power Networks logo

UK Power Networks, Hannibal House, Elephant & Castle, London

Dunn AC were appointed as the contractor to de-commission and remove 125.0kW of relatively new split and multi split air conditioning systems as a result of the the Hannibal House and Elephant & Castle Shopping Centre complex being regenerated.

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Barclays Bank logo

Barclays Bank, Thatcham, Berkshire

Dunn AC were appointed as the contractor to repair the complete building comfort and critical cooling/heating air conditioning system.

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Freedom Infrastructure Services logo

Freedom Infrastructure, Ipswich, Suffolk

Dunn AC were appointed as the contractor to repair the complete building heating system following fault diagnoses.

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Brett Group logo

Brett Group, Aylesford, Kent

Dunn AC were appointed as the contractor to replace the faulty air conditioning systems serving the operations office.

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NHS logo

South London & Maudsley NHS Foundation Trust, London

Dunn AC Limited was re-appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all air conditioning and air handling assets across their trusts hospital property portfolio.

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Freedom Infrastructure Services logo

Freedom Infrastructure Services, London/Southeast/East Anglia

Asset Management of all M&E/fire fighting/emergency lighting/fire panels/first aid assets across UKPN property portfolio.

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Regus logo

Regus, Southampton Row, London

Dunn AC were appointed the contractor to replace numerous branch selector (BS) boxes throughout the building that had failed.

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HSBC logo

HSBC, Worthing

Dunn AC were appointed the contractor to replace the failing up-flow critical cooling units serving their main server room.

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Bel UK logo

Bel UK, Sevenoaks

Dunn AC Limited was appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all air conditioning, heating and ventilation assets across their business properties.

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Pets Corner logo

Pets Corner, Crawley

Supply and installation of new complete building AHU system.

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Essex & Suffolk Water logo

Essex & Suffolk Water

Maintenance and call out service contract

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Southern Rail logo

Southern Rail, Croydon Data Centre

Installation of 75kW of critical cooling to the main server room.

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Wettons logo

Wettons, Sevenoaks

Appointed as the HVAC contractor to supply and install a new comfort and critical cooling air conditioning systems to their new offices and comms room.

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Pyramids Shopping Centre logo

Pyramids Shopping Centre, Birkenhead

Dunn AC Limited was appointed by their client as the contractor to carry out de-commissioning, removal and disposal of redundant air conditioning, heating and ventilation plant.

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Regus logo

Regus - Austin Friars, London

Dunn AC Limited was appointed by their client as the contractor to carry out the complete refurbishment of the whole building air handling ventilation system.

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UK POwer Networks logo

UKPN Frant

Dunn AC Limited was appointed by their client as the contractor to carry out the installation of 24kW of comfort cooling to the training suite in Frant.

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Allianz logo

Allianz - Guildford, Surrey

Dunn AC Limited was appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all air conditioning and air handling assets across their business property.

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HSBC logo

HSBC Canterbury

Dunn AC Limited were appointed by their client to supply heat pump air conditioning to replace their failed system serving the banking hall, cashiers, personal banking offices and comms room throughout the branch.

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Facebook logo

Facebook Inc. Fitzrovia, London

Dunn AC Limited was appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all air conditioning & air handling assets across their property in Fitzrovia, Central London.

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Amazon logo

Amazon UK - Holborn, London

Dunn AC Limited was appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all data centre down-flow, critical cooling systems in Fitzrovia, Central London.

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Inmarsat logo

Inmarsat - Shorditch, London

Dunn AC Limited was appointed by their client as the contractor to replace the failed DX condensers serving 5th floor air handling unit. Two new Airedale DX condensers were selected, supplied and installed and linked to the site BMS system.

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Warner Bros logo

Warner Bros - Warner House, Theobalds Road, Holborn

Dunn AC Limited was appointed by their client as the HVAC contractor to supply and install a new air conditioning system to serve the 8th and 9th floor offices and 7th floor comms area.

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Regus PLC logo

Regus PLC London

Dunn AC Limited was appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all air conditioning , air handling, natural gas, oil and LPG combustion assets across their property portfolio in Central and Greater London.

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xxxxx logo

Jones Lang LaSalle - Southeast England

Dunn AC Limited was appointed by their client as the contractor to complete natural gas servicing to air and convection combustion heating systems across their property portfolio.

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UKPN logo

UKPN East Anglia and The Southeast

Dunn AC Limited was appointed by their client as the contractor to complete full periodic quarterly planned maintenance to all air conditioning , air handling, natural gas, oil and LPG combustion assets across their property portfolio

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Sea Drill logo

Sea Drill - Chiswick Park

Dunn AC Limited was appointed as the HVAC contractor to supply and install a new air conditioning system to serve the open plan office space and critical cooling areas throughout.

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Gatwick Airport logo

Valet office - Gatwick Airport North Terminal

Dunn AC Limited was appointed as the HVAC contractor to supply and install a new air conditioning, ventilation, heat recovery ventilation and air curtain heater systems to serve a new valet parking office situated within the on-site car park at Gatwick Airports North terminal.

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HSBC logo

HSBC - Hammersmith

Dunn AC Limited was appointed as the HVAC contractor to supply and install a new air conditioning system added to their current VRV system to serve critical and comfort cooling to the comms room, back office and canteen areas.

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Swan Walk Shopping Centre Horsham

Dunn AC Limited were asked by our client to complete a new installation of a cooling/heating system serving the management suit.

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Barclays Bank, Cambridge

Dunn AC limited were asked by their client to supply replacement NG heating system for there failing aged system on site.

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H Samuel Eastleigh Southampton

Dunn AC limited were asked by their client to supply a replacement cooling system for their failing aged system on site.

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Velocity V1 Brooklands, Weybridge

Dunn AC Limited were asked by our client to be the main HVAC contractor to carry out the refurbishment of Velocity V1 building on the prestigious Brooklands Estate.

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Barclays Bank Tower Exchange, Canary Wharf

Following an emergency call out attendance by Dunn AC Engineers it was identified that the main chiller plant serving the clients emergency crash suite and IT department had failed components.

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Virgin Atlantic Ticket Office, Gatwick Airport, North Terminal

Dunn AC were asked by their client to carry out the supply & installation of a new cooling system serving the Virgin Atlantic Ticket office located at Gatwick Airport, North Terminal.

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Barclays Bank Canterbury

To replace all natural gas fired boilers to site with new condensing type systems.

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Warner Bros De Lane Lea Studios Soho

Design, supply and installation of 160kW of comfort cooling to the new recording and design area

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Barclays Bank Borehamwood

Branch refurbishment carried out by Dunn AC Limited.

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Bethlem Hospital Beckenham

To carry out a refurbishment of main trusts comms room to replace critical cooling systems within a 'live' environment.

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Barclays Bank Thornbury Bristol

Branch refurbishment carried out by Dunn AC Limited following 'gas attack' to external ATM's.

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DHL Barking

Design, supply and installation of 18X split and multi split air conditioning systems providing comfort cooling to all areas of the distribution building.

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EnjoyWork Chiswick Park

Design, supply and installation of 2X chilled water pressurisation systems to work along side the existing Trane chillers serving building 3 & 4 carried out by Dunn AC Limited.

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Some of our recent clients:

Our accreditations:

Constructionline BESA Logo Defra Logo Achilles Logo