Professional Mechanical & Electrical Services

Calstan provide a wide range of high-quality mechanical & electrical services, including the installation and maintenance for commercial, industrial and domestic clients across London, Kent, Surrey, Hampshire and Sussex. 


We provide a high-end service that will give a return on your investment. Our service department ensure a well maintained and trouble free system.




With a high credible track record in
commercial environments, you can rely on Calstan to meet your demanding timescales and budgets.




We are well versed in the pressures of working in industrial environments. Calstan understand production pressures and environmental factors.





Quality plumbing and heating installed and maintained to the highest domestic, commercial and industrial standards.


Specialists in design and installation of commercial boiler installations and plant rooms. Providing an efficent and affective system. 


Calstan provide a team of engineers that have amassed over 50 years experience of the ventilation industry both commerical, public and private sectors. 

Servicing contracts (PPM)

Keeping commercial and industrial boiler rooms serviced all year.  Taking care of any remedial works to keep services running smoothly.

Air Conditioning

Calstan install, service and maintain heating and cooling systems across all sectors and throughout the South of England.

How do you know you need Calstan Mechanical on your next project?

Because Calstan have built their reputation on providing a truely exceptional service we are trusted partners on both large developments and industrial projects and the very top end installations. We maintain our reputation by ensuring we keep up to date with our staff training and accreditations.  

Fully Certified and Insured

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Calstan takes the time and effort to reach full accreditation so that you can be sure you have the right company for the job, whatever it is. We are also fully insured to work in domestic, commercial and industrial environments.

Provern Track Record

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Calstan has worked in many different environments and has a wealth of happy customers behind us.  Take a look at the reviews on our testimonials page.

Fully Trained an Qualified

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Calstan takes pride in their work, and to ensure we always achieve the highest standards, we make sure we only employ the best engineers. Engineers who have the right qualifications and experience to achieve the best results.

Customer driven schedules

When you need us we will be there, with all the supplies and equipment, ready to go at the time agreed.

Satisfaction Guaranteed

We proudly stand by the quality of our workmanship and are happy to back that up with our client after care.

Great client relationships

With one point of contact you can be assured of continuity of command and control on your project.

Calstan Mechnical are reliable, experienced mechanical engineers, who approach every project with professionalism and tenacity.

Stanway Interiors

Commercial Client

Their knowledge and experience has been invaluable assisting with various contracts ranging from design through to installation.

KH Engineering Services Limited

Commercial Client

Development, Commercial or Industrial, no matter what sector, we’ll be there.

Serving your business with ours


Head Office

Unit 4 Christie Place, Bognor Regis,
West Sussex PO22 9RT

Call Us

01243 838207