Collins Walker

Electric Steam & Hot Water Boilers

Tel: +44 (0) 1234 340044

About us

Worldwide leader in the Electric Boiler market

Collins Walker Limited was formed in 1972 with the intention of establishing itself as the worldwide leader in the Electric Boiler market offering bespoke steam and hot water solutions to customers around the world.

Our Markets

Collins Walker steam and hot water solutions are used in a wide range of applications and industries in the UK and worldwide. Our existing customer base operates in a diverse range of sectors:

  • Chemicals
  • Clothing & Textiles
  • Construction
  • Engineering
  • Financial Services
  • Food & Beverage
  • Hospitals
  • Hotels
  • IT & Telecoms
  • Manufacturing
  • Mining
  • Oil & Gas
  • Pharmaceuticals
  • Power Stations
  • Public Sector
  • Transport
  • Universities

Our Clients

We have a wide range of national and international clients

Our UK & Irish Clients

Our Global Clients

South West

Anchor Foods
Bristol University
Eaton Aerospace
Jersey Electricity
Magnox North
Pirelli Cables Ltd


Allied Distillers
Conoco (UK) Ltd
Exxon Mobil (North Sea)
Glaxo Smithkline
NATO Ammunition Department
Scottish & Southern Energy
Scottish Power
UK Atomic Energy Authority (UKAEA)
University of Glasgow

Central England

ABB Daimler Benz
Alliance & Leicester Building Society
Bass Breweries
British Telecom
Cosworth Racing
Derby Industrial Museum
EDF Energy
Imperial Tobacco
Land Rover

Northern Ireland

AES Kilroot Power
CSS Laboratories
Northern Ireland Electricity

Southeast England

Atomic Weapons Establishment (AWE)
BAA Heathrow Airport
Barbican Centre
Barclays Bank
British Gas
Canary Wharf
Crown Prosecution Service
Imperial Cancer Research
Imperial College London
Lanesborough Hotel
London Borough of Hammersmith
National Grid
National Trust
Natural History Museum
Shell Marketing

Northern England

Akcros Chemicals
BOC Limited
BUPA Regency Hospital
ICI Chemicals Ltd
J Stobart & Sons
Manx Power
Rank Hovis

Eastern England

Ford Motor Company
Ipswich Borough Council
Jacksons Construction
Johnson Mathey
Norfolk Lavender


Abingdon Flooring
Morganite Special Carbons
RWE Npower

Republic Of Ireland

Irotech Laboratories
Loctite Ireland

Our Global Clients

North America

Texaco [Trinidad]


Arabian Gulf University [Bahrain]
Opsonin Chemical Ltd [Bangladesh]
Yantai Raffles [China]
Dubai Medical Centre [Dubai]
Bridgstone Tyres (Asia) Ltd [Hong Kong]
Hong Kong Polytechnic [Hong Kong]
Taitex (Hong Kong) [Hong Kong]
All India Institute of Medical Science [India]
K.E.M Hospital (Bombay) [India]
Lucknow University [India]
Ministry of Defence (India) [India]
CV Multi Karya Kompleks [Indonesia]
Shiraz Vegetables [Iran]
State Construction Contracting [Iraq]
Al Abraq Trading Co [Kuwait]
Khiran Resorts (Kuwait) [Kuwait]
RAVCO International [Kuwait]
Laundry Installations [Malaysia]
Ansor Corporation [Phillippines]
Qatar Petroleum [Qatar]
Al Khasseif Trading [Saudi Arabia]
Bechtel AIFC [Saudi Arabia]
Chiyoda Corporation [Saudi Arabia]
Batchelor Foods [Singapore]
Glaxo Smithkline (Singapore) [Singapore]
S A Perera & Co [Sri Lanka]
Hammami (Syria) [Syria]
Electronics Research & Service Organisation [Taiwan]
Merck-Kanto Advanced Chemicals [Taiwan]
Thailand Carpet Manufacturing Ltd [Thailand]
Aden Refinery [Yemen]


OK Tedi Mining Company [Papua New Guinea]


Coca Cola CIB [DR Congo]
Gecamines [DR Congo]
Heineken [DR Congo]
Shalina Laboratories [DR Congo]
Vendome Hotel Cairo [Egypt]
Ethiopian Livestock & Meat Corporation [Ethiopia]
Ethiopian Mineral Resources [Ethiopia]
Kombolcha Textiles [Ethiopia]
Letap Pharmaceuticals [Ghana]
Lintas (Ghana) [Ghana]
Regent Laboratories [Ghana]
Energy Pak Kenya [Kenya]
Sirte Oil Company [Libya]
Coats Viyella Clothing [Morocco]
Daily Need Industries [Nigeria]
NSPM PLC [Nigeria]
Unilever (Nigeria) [Nigeria]
CMD Plastics (Franko) [Sierra Leone]
Techquipment [Sudan]
Laundry Installations (Tanzania) [Tanzania]
Kampala Medical Centre [Uganda]
Kasese Cobalt Company [Uganda]
Kibuli Police Training School [Uganda]
Kyambogo University [Uganda]
Mulago Hospital [Uganda]
Uganda Electricity Board [Uganda]
Uganda Electricity Board [Uganda]
Western Highland Creameries [Uganda]
Wormald Engineering [Uganda]
Cosmetica Industries [Zambia]
Crown Agents (CESL) [Zambia]
Dairy Produce Board (Zambia) [Zambia]
ESI National Research Centre [Zambia]
Mufulira Hospital (Zambia) [Zambia]
Ndola Lime Company Ltd [Zambia]
Zambia Consolidated Copper Mines (ZCCM) [Zambia]
ABB Steward (Zimbabwe) Ltd [Zimbabwe]
Reckitt & Coleman [Zimbabwe]


Belgorex [Belgium]
Wanson (Brussels) [Belgium]
Danish Red Cross [Denmark]
Danish Turnkey Dairies [Denmark]
Unilever (Finland) [Finland]
Alstom Power [France]
Meissner & Wurst [Germany]
Peco Trading [Germany]
Auto Alloys (Greece) [Greece]
Draupnir [Iceland]
Icelandic Water [Iceland]
Irotech Laboratories [Iceland]
Kaldi Beer [Iceland]
Rammi Shrimp Factory [Iceland]
William Grant & Sons [Iceland]
Ballestra (Milan) [Italy]
Bonatti S.p.A [Italy]
Reids Palace Hotel [Madeira]
Rua De Hospital Velho [Madeira]
Mr Edward Roch (Monte Carlo) [Monaco]
Dow Chemicals (Rotterdam) [Netherlands]
Centre for Industrial Research (Oslo) [Norway]
Melo Quieroz [Portugal]
Nergsol [Portugal]
Coinamatic [Russia]
Aerostar Hotel Moscow [Russia]
Pharmacia AB [Sweden]
Irotech Laboratories
Loctite Ireland

South America

Sociedad Anglo Boliviana [Bolivia]
AVX Ltd [El Salvador]
Apin Engineering [Peru]
British Antarctic Survey [South Georgia]

The Green Question

An electric steam boiler emits no pollutants at the point of use but it may be responsible for off-site pollution, depending on the source of the electricity. It is also an inefficient way of using fossil fuels because a thermal power station typically converts only about one third of the fossil fuel energy into electricity.

However, if the power source is renewable and the electricity is generated via a wind turbine, solar heating, a hydro–electric plant or nuclear power station then an electric steam boiler is the only carbon-free boiler solution that exists in the commercial and industrial boiler market.

Moreover, the government has recently commissioned four Carbon Capture & Storage (CCS) power stations that will ultimately move the United Kingdom towards a completely carbon-free source of electricity generation. Over the next 20 years it is clear that many companies will be required to move towards Electric Boilers as the only realistic solution to reduce carbon emissions in the UK industrial boiler sector.

Electric Boilers versus Gas or Oil Boilers

Collins Walker Electric Boilers have distinct advantages over conventional oil and gas-fired solutions. The key benefits to our commercial and industrial customers are:

  • No separate boiler house or chimney required
  • Environmentally friendly and pollution free
  • No fuel Storage requirement
  • No special fire or health and safety precautions
  • Instantaneous hot water and steam generation relative to gas and oil fired boilers
  • Clean and quiet
  • Compact, easy to install and can be located close to the point of use
  • Low maintenance and years of trouble free operation
  • High efficiency up to 98% even at partial load

Electrode Boilers versus Immersion Element Boilers

There are two methods of utilizing electric power to generate steam in an electric boiler or steam generator. One is to pass electric current through a metal resistance-heating element immersed in water. The metal element resists the passage of current and develops heat, which by contact is conducted to the water and finally generates steam. The other method is to utilize the water itself as the resistance element carrying alternating current between solid metal electrodes. The resistance of the water to the passage of current produces internal heat that results in rapid steam generation.

Collins Walker manufactures both Electrode and Immersion Element Steam Boilers and there are different benefits associated with each type of boiler. The boiler that is selected for a particular project will usually be based on the customer's specific requirements. Electrode Boilers are a simpler design and tend to be more physically robust and easier to maintain. They also tend to be more resistant to electrical supply fluctuations and spikes, so are popular in areas such as Africa and the Middle East. It is also possible to generate significantly more steam output from the same Electrode boiler by using a higher voltage electrical supply. For example, our largest Electrode Boiler, the ES240, will generate 3520 Kg/Hr of steam from a 3-phase 415 volt electrical supply. However, this can increase to 6000 Kg/Hr if a 690 volt electrical supply is used.

The Immersion Element Boilers are a more modern design which, with the use of elements, offers a greater flexibility in the range so the boiler can be tailored specifically to meet the customer's steam or hot water requirements. The use of elements also gives the capacity to upgrade boilers of the same model by adding elements to the flange assembly.

For example, our smaller ELV boiler can cover a steam output range of 19 Kg/Hr to 200 Kg/Hr simply via increasing the number of elements (& stages) in the boiler. The Immersion Element boilers also offer a more controlled electrical load regulation than the Electrode Boilers which can be improved further via the use of Thyristors rather than via staged contactors.

Collins Walker Ltd
78 College Street
MK42 8LU
United Kingdom
Company No: 01087370
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