About OKEL

Bespoke Heating and Cooling Solutions

OKEL is a team of high-quality consultants and accredited engineers working with industry-leading brands and manufacturers to offer energy-efficient heating and cooling solutions. No matter the size of the project, we have a system that can save energy and lower costs, in the long run, giving you the opportunity to reach your Net Zero Agreements.

Operating from our head office in Warrington, OKEL services the whole of the UK. Offering free site surveys and consistently reaching and exceeding project timelines. 

Our History

2010 – OKEL was founded by Mark Stephenson, who came with many years of previous experience running successful HVAC companies. OKEL offered system design and installation of high-efficiency commercial heating and cooling solutions for businesses.

2011 – OKEL became an approved supplier of the Carbon Trust Scheme, enabling our customers to access Carbon Trust funding to replace inefficient heating and cooling equipment in the workplace with modern highly efficient alternatives that would drive down their carbon footprint and save money on energy bills.

2013 – OKEL introduced Commercial Voltage Optimisation, a new carbon-saving product to complement the portfolio of energy-saving offerings to businesses.

2018 – OKEL became an approved installer of Calor UK.

2020 – OKEL was the first National commercial heating company to introduce 3-phase electric fuelled space heaters into our large space heating designs, perfect for customers with no available gas supply or those wanting a greener alternative to gas.

Why Choose OKEL?

  • Quality and Safe Installations: Receive a thorough site survey from high-quality consultants and accredited engineers. We will discuss your current and any alternative fuel types and capacities to offer a heating and cooling solution best suited to your space.
  • Energy-Efficient Heating and Cooling Designs: Energy efficiency is at the heart of everything we do. We’ll create a system that helps your business reach targets set out in the UK’s Net Zero Commitment.
  • Leading Brands and Manufacturers: We only work with the best, industry-leading brands and manufacturers to ensure quality, efficiency and warranties that last.
  • Lowest Lifetime Running Costs: Our bespoke heating and cooling solutions are expertly designed to provide you with the most cost-effective solution for your requirements, including fuel types, whilst also ensuring future running costs of your new systems are kept to a minimum.
  • Years of Commercial and Industrial Experience: Our relationships with manufacturers and our teams of accredited engineers mean we can offer you a one-stop solution for your heating and cooling needs that you can’t find anywhere else.
Warm air heating unit for sports hall at Milford Haven Gymnastics Club

Quality and Safe Installations

Your new installation will be in safe hands with our teams of highly skilled commercial engineers who provide rigorous attention to detail and a flexible approach to your installation to ensure minimal disturbance to the day-to-day running of your business.

Each of our engineers has over 25 years of experience in their chosen trade and our investment in experienced engineers ensures that your heating or cooling project will be completed to the highest quality standards, delivered on time, and within the rigorous health and safety protocols expected of our industry. 

  • Gas Safe. Our team of commercial heating engineers each have over 25 years of experience in the heating industry, are all Gas Safe registered and fully accredited to work on Natural Gas and LPG commercial and industrial heating projects.
  • NICEIC. Our electricians are members of NICEIC which is an independent voluntary body that regulates and oversees electrical work within the electrical industry. NICEIC continuously monitors and audits the electrical works carried out by its members to ensure they remain to the highest industry standards and regulations.
  • FGAS. Our cooling engineers are all FGAS certified and accredited, a mandatory requirement for engineers installing or servicing air conditioning or refrigerant systems.


Once your new system has been installed, we’ll always take the time to walk you through how it works, ensuring that you’re confident in using it before we leave. 

Most importantly, you’ll have peace of mind knowing that, should a fault develop, we will be on hand to support you with any necessary servicing and repairs.

Energy-Efficient Heating and Cooling Designs

We pride ourselves on sourcing the most energy-efficient HVAC systems, many of which feature on The Energy Technology List, a government list of the most energy-efficient plant and machinery that must meet robust energy-saving criteria.

For heating large open-plan areas such as factories and warehouses our preferred models of heaters are ERP2021 compliant in accordance with the latest ecodesign directive. In addition, for large open-plan areas with ceilings higher than 5m, our designs often include high-efficiency destratification systems that prevent wasted energy by minimizing heat escaping at ceiling height.

OKEL commercial boiler

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 gives you the reassurance 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.

We’re all conscious of our impact on the environment and by assigning your project to OKEL you can have confidence in knowing that all our equipment is Hydrogen Ready – which enables the successful blending of up to 30% Hydrogen with Natural Gas for when this hybrid fuel type becomes readily available throughout the UK gas networks.

Leading Brands and Manufacturers

We’ve developed an enviable knowledge base of the best-performing HVAC equipment in the industry and have long-standing connections to be able to source and purchase these products at competitive prices even during peak seasons.

We only work with the leading brands in the industry which means that in addition to the quality components and workmanship of your new system, you will also benefit from comprehensive manufacturer warranties.

Systems Designed to Deliver Lifetime Low-Running Costs

We understand that one of your key priorities when installing a new heating or cooling system is your ongoing running costs and how these changes will impact your energy bills moving forward.

In addition to factoring in the removal of unnecessary costs associated with maintaining obsolete and outdated equipment, we introduce new systems that are fully modulated and equipped with intelligent controls, so that they only use only the energy required.

You can have peace of mind knowing that your new system will deliver an optimum performance which leads to lower energy usage and cheaper energy bills.

Strongdor factory space
Warm Air Heating System In Sports Shop

Years of Commercial and Industrial Experience

Our team has years of experience designing heating and cooling systems for a wide range of industries, making us uniquely suited to provide you with the perfect solution for your business. We’ll consider your specific needs and concerns, providing you with a tailor-made system to suit your business requirements.

We understand that your commercial space has its own unique requirements which must be addressed to deliver a highly efficient and effective solution. This includes providing a safe and comfortable working environment for your employees or achieving desired temperatures to manufacture and store quality goods.

We’ll advise you on the most suitable solution for your premises, one that delivers against your project requirements and is designed to minimise energy consumption which in turn will reduce associated energy bills.

Receive a Free Site Survey

If you’re looking for a smarter solution to your heating or cooling systems, call us today or fill in our contact form to receive your free site survey. We’ll get to know your needs and build a bespoke solution that meets your every requirement. Reach out today!