Experienced Commercial Gas Engineers For Your Business

At SEM Facilities, we take pride in our team of highly skilled and experienced commercial gas engineers. With their in-depth knowledge and expertise, our experts are well-versed in all aspects of commercial gas systems.


Years of Experience From Our Expert Engineers.


Clients Worked With, Providing a Dependable Service.


Industry Accreditations


Counties Coverage, Ensuring We Can Help You Across The UK.

Recently Completed Projects

AT SEM Facilities, we understand portfolios have the power to provide peace of mind. Browse our range of recently completed projects and find examples of our excellent work, below!

25 September 2023

Thorney Court

27 July 2023

Gas System Purge in Salisbury

7 June 2023

West London High School

1 June 2020

Islington Council for Woodside Contract Services

1 June 2020

University for the Creative Arts

1 June 2020

Samsung SDS Headquarters, Weybridge Surrey

2 May 2020

IQ Student Accommodation

4 October 2019

Arkle – No. 6 Buckingham Gate

7 July 2019

London Management Company – Rutland Gate

Keep your business running smoothly

Hire a Commercial Gas Safe Engineer Today

By hiring a commercial gas safe engineer from SEM Facilities, you can have peace of mind knowing that your business is in safe hands. We’ll ensure that all gas installations, repairs, and maintenance are carried out safely and efficiently, and we’ll provide you with all the necessary documentation to demonstrate compliance with current regulations. If you’re looking for a reliable and professional commercial gas engineer in the UK, SEM Facilities is here to help.

Our team of Gas Safe registered engineers has years of experience working with a wide range of businesses across the UK, providing expert solutions to ensure their gas appliances and heating systems are safe, reliable, and energy efficient. All contracts with SEM Facilities will have a dedicated account manager and staff, helping to ensure all your needs are met. Contact us today to discuss your commercial gas requirements and find out how we can help keep your business running smoothly and safely. Remember, your gas safety is our business!

Gas Safety Checks and Certifications

Gas safety is a top priority for any business, and our commercial gas engineers are experts in ensuring your gas appliances and heating systems are safe to use. We offer a range of gas safety checks and certifications to help keep your business running smoothly and safely, providing peace of mind for continued efficient use.

Our gas safety checks include a thorough inspection of all gas appliances, pipework, and flues to ensure they meet the required safety standards that are crucial for your business. We’ll also provide you with a gas safety certificate to confirm that your appliances are safe and compliant with current regulations.

Expert Solutions for Improved Boiler Efficiency

Boilers are a vital component of many businesses, providing essential heat and hot water for daily operations. At SEM Facilities, our commercial gas engineers are experts in providing solutions to improve the energy efficiency of your boiler and heating plant, helping to reduce your energy bills and lower your carbon footprint.

We offer a range of services to improve the efficiency of your boiler, including power flushing, boiler descaling, and the installation of energy-efficient controls. Our engineers will work with you to develop a bespoke solution that meets the unique needs of your business and helps to keep your boiler running smoothly and efficiently.

Industry Leading Services & Solutions

We have a range of gas and heating services you can arrange that will ensure your facilities are safe and maintained to the highest standards. Discover more about each service we have available, and get a quote today.

Commercial gas solutions

Servicing Appliances and Heating Systems

Regular servicing of your gas appliances and heating systems is essential to ensure they operate safely and efficiently. Our commercial gas engineers offer comprehensive servicing for a range of gas appliances, including boilers, cookers, and water heaters. We’ll inspect all components of your appliances to identify any potential issues and perform any necessary repairs or replacements to keep them running smoothly.

Regular servicing can also help to improve the energy efficiency of your gas appliances and heating systems, which can lead to significant cost savings over time. Our engineers will work with you to develop a regular servicing schedule that meets the needs of your business and helps to ensure your appliances are always in top condition.

Client Testimonials

SEM Facilities have been on our approved suppliers list for many years, and have carried out all aspects of Gas related works on our mobile portfolio to a professional high standard.

We have always found SEM to be reliable, trustworthy and extremely obliging, they work to our company processes and are flexible to the working situations.

Gerry Connoly


All of us at Porters are very grateful for your prompt attention to our boiler room breakdown. We were almost at the point of evacuating the building until your guys turned up at the door as arranged. As it turned out (despite our panic) the problem was relatively minor and you charged accordingly. Your billing reflected the fact and your honesty is to be commended.

Jon Porter


As an FM company we at IQPS strive to use high quality and efficient engineers. SEM Facilities have proved to be a call above the rest with their extensive knowledge of all systems irrelevant of size or age.

Their happy and confident approach to tacked anything we throw at them fills us and our clients with great confidence. Keep up the good work from all of us at IQPS.

Toby Ford


I can confirm our company has employed SEM over many years covering aspects of Gas and heating on contracts ranging in scale from a few thousand pounds up to £250,000. We continue to retain their services as we have found that their standard of works and professionalism is second to none.

We would have no hesitation in recommending them if you have any Gas or heating projects where a very high standard of workmanship is required.

John Putnam

Opus Facilities ltd

As contract manager for M and E across 4 University sites, I have struggled to find a reliable contractor to maintain the combustion plant. A colleague of mine recommended Surrey Environmental Maintenance to me 4 years ago and I haven't had a need to go elsewhere. I have found them to be professional and technically capable. Quoting and administration is quick and proficient. Always happy to respond to urgent calls, giving time scales and great advice as required.

The most important thing is their honesty, if they cannot do something, they will tell you.

John Holcroft


Read The Latest News & Articles

Read our latest news and industry insights, as well as the most up-to-date company information from SEM Facilities. Discover more about industry trends and updates you won’t want to miss.

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Gas | 30 October 2023

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Services for Schools
Customer Service | 24 August 2020

Services for Schools

Specialist engineering and maintenance support for schools and colleges We are fully qualified gas, heating, plumbing, electrical and air conditioning...

Kerry Jones joins SEM Facilities
Customer Service | 2 May 2020

Kerry Jones joins SEM Facilities

Kerry Jones launches our South West division We are delighted to welcome Kerry Jones to our ever growing business, enabling us to expand our services to the...

Customer Service | 2 May 2020


Tracking our engineers with new technology In order to keep a closer eye on the efficiency of our customer services SEM Facilities have now installed the...

Get Hydrogen Ready
Gas | 10 March 2020

Get Hydrogen Ready

Making the change to hydrogen heating In the UK we already have 100% natural gas grid, and as of 1996, under current regulations, all gas boilers installed...

Gas Safety is our business
Gas | 2 October 2019

Gas Safety is our business

Gas Safety Week… all year round! SEM: THE GAS SAFETY SUPERHEROES Gas Safety Week may have been and gone back in September but at SEM Facilities EVERY...

Commercial Gas Engineers Frequently Asked Questions

Whether you are seeking information about our services, looking for expert advice, or have a general question about our commercial gas engineers, you’ll find the information you need here in our FAQs. Can’t find the answer you’re looking for? Please contact our team today and we’ll be happy to further assist you.

A Gas Safe registered engineer is an individual who has been trained and certified to work safely and legally with gas appliances. It’s essential to hire a Gas Safe registered engineer for any gas installations, repairs, or maintenance work in your business to ensure compliance with current regulations and safety standards.

A gas safety certificate is a legal document that confirms that your gas appliances have been checked and are compliant with current regulations. You need a gas safety certificate for all gas appliances in your business to demonstrate compliance with safety standards and ensure the safety of your staff and customers.

The time it takes to complete a gas safety check depends on the size and complexity of your gas system. For an accurate time estimate, please enquire.

During the annual gas safety service for commercial buildings, plant room checks are carried out, which involve visual and operational assessments of major plant equipment. This includes pressurisation units, pump sets, pipework and fittings, cold water storage tank (CWST) visual inspections, cold water booster set (CWBS) visual inspections, and system water samples to ensure correct levels of treatment and confirm the condition of system water. Additionally, basic asset lists can be compiled at an extra cost if requested.