Commercial Boiler Installation Services
Across the UK

OKEL is the leading supplier of energy-efficient smart solutions when it comes to commercial boiler installation. We understand that heating large buildings such as offices, leisure centres and care homes can mean a world of difference to the people working, enjoying and living there. 

All commercial spaces should have a high-efficiency boiler solution adequately sized to deliver against the premise’s individual heating and hot water requirements. Regular domestic boilers are simply not up to the task of heating your commercial property effectively.

That’s why OKEL provides commercial boiler installations for commercial properties across the UK, no matter the size. From large offices to boutique hotels, council-funded leisure centres, private care homes, schools and universities, and more. 

Commercial boilers offer improved performance and help to future-proof your business against rising energy costs, by improving efficiency across the board.

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Why Choose OKEL?

Accredited Engineers

Tailored System Designs

Energy Efficient Systems

20+ Years Industry Experience

Green Funding Payment Options

Quality and Safe Installations​

We understand the importance of a safe environment. When you’re serving the public, staff and visitors, you know you can count on OKEL. We know that you’ll want total confidence in our heating engineers, that’s why our team is fully trained and qualified for the job and has years of experience installing commercial boilers across the UK.

By assigning your project to our team you’ll be assured that all our lead commercial heating engineers are Gas Safe registered engineers and bring a minimum of 25 years’ experience to every job. In addition, they have a wealth of experience in heating commercial spaces. This means we’ll carefully plan the installation to ensure any loss of heat or hot water is minimal and that it’s carried out during agreed times to ensure no impact on planned activities.

New boilers and hot water systems for Woolton Golf Course

Energy-Efficient Commercial Boiler Systems​​

Every commercial space has its own unique heating and hot water requirements, which is why we offer a design and installation solution carefully tailored to meet those needs.

Our process begins with an on-site consultation to discuss what you need regarding heating, hot water and temperature control. We’ll perform a survey of your premises to ensure that all your needs are taken into consideration. From there, we’re able to design the ideal low-energy solution to provide optimal comfort levels in a cost-efficient manner.

We know how challenging and expensive heating commercial spaces can be, and with the rising cost of energy, it’s essential to consider running costs in our overall designs.

We create heating designs that include the highest efficiency commercial boilers, from leading manufacturers such as ATAG Commercial, Alpha Innovation and Rinnai UK. Not to mention, all of our systems are Hydrogen Ready. Meaning they’re designed and capable of blending up to 20% Hydrogen with natural gas for when this greener hybrid fuel type becomes readily available throughout the UK’s gas distribution networks.

Introducing a new commercial boiler system can drastically improve energy efficiency across the board. With an old boiler system, you risk losing anything in the range of 30–40% of the heat it generates due to natural aged-related wear and tear impacting the boiler’s efficiency. You can reduce the loss to single digits by replacing it with a new model.

Upgrade Your Commercial Space with an Efficient Boiler System...

Commercial boilers hyrdogen ready

What are the Benefits?

Our Process


Initial Consultation


Pre-Installation Planning




Handover and Aftercare

Our Net Zero Commitment

With challenging targets being set by the government to steer the UK to net zero by 2050, it’s essential that as businesses we all do our part to achieve the stringent targets set out.

When planning our bespoke designs, we always have “Energy Saving” at the front of our mind which reassures you that your system is of the highest efficiency. This can play a key role in helping you showcase the steps you’re taking as a business to successfully achieve green accreditations and targets.


Read Our Commercial Boiler Installation Case Studies

We’ve provided commercial boiler services across the country. Take a look at our case studies to learn more.

Case Studies

Cheshire Care Home

Commercial Boilers / Plant Room Upgrade: August 2020
Cheshire Care Home

Manchester Care Home

Commercial Boilers / Plant Room Upgrade: April 2021
Manchester Care Home

Grafton Lodge Care Home

Commercial Boilers Upgrade: September 2019
Grafton Lodge Care Home

Customer Testimonials

Carl Holton
Carl HoltonCompliance Manager - Davison’s Solicitors Ltd
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We received an excellent service from OKEL. Managing Director, Engineers and their customer operations Manager were timely, kept us up to date throughout the whole process, friendly and professional and the commercial boiler installation is of a high quality. I would highly recommend."
Suzanne Fulton
Suzanne FultonBusiness Centre Manager - Mersey Maritime
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"I would highly recommend OKEL who provided a new boiler for our office. They provided a smooth and professional service from start to finish. They even tidied up afterwards and took our old boiler away!"
Nikki Boardman
Nikki BoardmanOffice Manager – Beaver and Struthers Accountancy Firm
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"Can I say how professional Phil and his team were when installing our new commercial boiler, they really did go above and beyond to ensure as smooth as possible."



A commercial boiler is a pressurised heating system that uses electricity or combustible fuel (depending on the model) to heat water for various applications in a commercial or industrial building. Any boiler that has a net energy input above 70kw is considered a commercial boiler.

We design the perfect commercial boilers and hot water solutions for your place of work, each one optimised to deliver optimal energy efficiency. We use hydrogen-ready boilers, which can blend up to 30% hydrogen along with natural gas, reducing your running costs. These are the highest-efficiency commercial boilers available throughout Europe, consistently delivering up to 99.3% efficiency.

We install the very latest models from some of the leading manufacturers in the commercial boiler and hot water industry. These include:

  • ATAG Commercial
  • Rinnai
  • Ideal
  • Worcester Bosch Group
  • Hamworthy
  • Vaillant
  • Baxi

We offer combi-boilers and system boilers, in both wall-mounted and floor-standing designs, depending on the needs of your system. All our models come with comprehensive manufacturer’s warranties as standard.

Your project manager will be able to recommend the right commercial boiler for your system once they have had their initial consultation with you.

Commercial boiler installations aren’t limited to large-scale commercial and industrial premises. 

We have worked with numerous businesses and organisations, providing the same high-quality service to schools, colleges, and universities, as well as residential care homes, offices, sports and entertainment venues, hotels, leisure centres, public and government buildings, hospitals, medical centres, GP surgeries, and retail outlets. 

If your property is too large for a domestic boiler to adequately heat, a commercial boiler installation may be the answer for you.

If you service it regularly and perform the appropriate maintenance, you can expect your commercial boiler to last anywhere from 10 to 15 years – perhaps even longer. For maximum efficiency, it’s generally advisable to replace any commercial boiler that has been in operation for longer than 15 years.

There are many variables involved in commercial boiler installations. Some businesses require a simple switching of one boiler for another whilst others involve ripping out an entire heating system and replacing it from scratch. 

When you have your initial consultation, we will discuss what you want from your new commercial boiler installation and from there we will be able to produce an accurate quote for the work.

Although visually the 2 types of boiler systems appear very similar on the surface, they are in fact very different in terms of how they function and what they can achieve – a combi boiler for example is able to provide instant heating and hot water, however, this does mean that the amount of hot water it can produce is far less as it doesn’t have a separate cylinder to store hot water. 

Whilst a system boiler works in conjunction with a hot water storage cylinder, it can store a vast amount of water and is more suited to larger premises or those with a greater demand for hot water supply.  

Only Gas Safe registered engineers qualified and accredited to work on commercial premises can install commercial boiler systems.

This ensures they have the necessary experience, training, and qualifications to choose the right boiler for your commercial premises and most importantly to provide you with a quality and safe installation.

Whilst some plumbers may be able to handle so-called “wet work” such as replacing traditional heating system pipes and radiators, the boiler itself should only be dealt with by an expert.

Depending on the extent of the project, a commercial boiler installation can take anything from a couple of days to a few weeks. We do all we can to plan any boiler installation around your business, to minimise any disruption for you, your staff, and your customers.