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Different by design

About Us

TSI is a family owned and run business based in Truro, Cornwall. Over the last decade we have grown to provide full M & E installation, plumbing and heating services and full construction services across the South West from Bristol to Penzance.

We always work closely with our clients, contractors and specialist suppliers to provide the best quality possible and can reduce your carbon footprint and running costs with the full range of low energy and renewable resource technologies. From an individual bespoke construction project to a 100-unit development, our team of experienced, fully trained and accredited electricians, plumbers and fitters are proud to get the job done effeciently and professionally.

Working with your architect or designer we can aid project management with advice and source materials, provide installation schematics and as-built plans to bring the project in on time, on budget and to the highest quality.

In addition to consultation and installation, we offer aftercare maintenance and servicing. For domestic customers, we can also help with energy surveys and financing.

Being in the building trade for the last 20 years we have a wealth of knowledge across the board and work with some very talented individuals. We wanted to bring the whole project under one roof and deliver excellence and peace of mind for our clients.

Different by design

Our Services


TSI Pro provide installations and repairs for residential and commercial properties throughout Cornwall. We offer wiring for new-builds, re-wiring for existing properties, repairs and servicing, socket installs, fitting lighting and electrical appliance installations.

Plumbing & Heating

Our team of plumbers provide installation and repairs for projects of all sizes. From pipework, installing kitchens and bathrooms, installing or repairing water tanks, burst pipe repairs to mains water systems. For heating we offer gas/oil/LPG boiler installations. Electrical heating…

Mechanical & Ventilation

TSI Pro is an approved and accredited installer of mechanical ventilation heat recovery systems. We offer a full design and installation package including sign off with building control.


TSI Pro are fully qualified and accredited installers of Air source heat pumps and Grounds source heat pumps with MCS. We are also RECC registered which means we are able to design, install and sign of our own installations allowing…

Building your vision, creating reality


  • Renovations
  • New builds
  • Commercial
  • Affordable
  • Hotel and Leisure
  • Education
  • Restoration
  • Design and Build
  • Listed Buildings
  • Health Care

Our Projects

Different by design

Contact Us

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Tsi Pro

Tsi Pro
Moorland View House, Penmarth, Cornwall TR16 6NY

0800 5999 751
07525 210496


© TSI Pro 2022 | Trade Services Installations LTD Trading as TSI PRO. Company Registration No: 06723010 | Website by