About Us

Bespoke luxury bathroom fitting that is tailored to exceed our clients expectations.
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Quality plumbing and heating systems designed, installed and maintained to the highest domestic and commercial standards
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Specialists in design and installation of underfloor heating that is fully accredited by Solflex
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Proven solar water heating installers in both domestic and commercial environments
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About Us

At Calstan, we provide a range of high quality mechanical services, including the installation and maintenance of plumbing and heating systems, renewable energy sources and solar panels, to domestic and commercial clients across Hampshire, Sussex, Surrey, Kent and London.

Find out more about our services

Based in West Sussex in the South East of England, our team is committed to delivering a friendly, professional and reliable service. Qualified, accredited and with 25 years’ experience of undertaking domestic and commercial projects, we have the skills and expertise to provide high quality mechanical services to meet our clients’ needs.

Find out more about our previous projects


Qualifications & Accreditation


Vallient LOGO

Solflex LOGO




Get in touch


To discuss how Calstan may be able to help you, contact us.

Telephone: 01243 838207

Email: info@nullcalstan.co.uk