About Testo Limited

Testo Limited was established in 1983 as the UK subsidiary of testo and is based in Alton, Hampshire where we sell the full range of test equipment across the UK and Ireland, both direct and through distributors.

We are a key supplier to the Facility Management and Industrial Maintenance Sectors where we are able to provide the full range of instruments which are critical to the effective and efficient maintenance of premises, and allow compliance with all key regulations.

Testo Industries:

 We have supply a vast range of high quality test and measurement equipmentto the folloeing industries:

  • Air Conditioning Installation and Maintenance
  • Building Maintenance, Surveying and Energy Management
  • Electrical Inspections and Engineering
  • Energy and Utilities
  • Facility Management
  • Food Manufacture, Production, Transport and Storage
  • Heating Installation and Maintenance
  • Manufacturing
  • Refrigeration Installation and Maintenance
  • Ventilation Installation and Maintenance
  • Pharmaceutical storage, monitoring and transport


This is all supported by our UKAS (ISO/IEC 17025:2005) accredited laboratory where we can calibrate a wide range of instrumentation, from numerous manufacturers, and manage equipment inventories of varying quantities along with offering fixed term contracts with fast turnaround times. We are able to serve customers throughout the UK and offer a pickup/delivery service in conjunction with our logistics partner UPS, and for customers local to our office in Alton we are able to offer a drop/collect service.

Testo UK - meet the team!


This picture shows all of us over at testo UK. From sales, to service, to dispatch, at testo UK we are all continuously working to make our customer's lives easier.


We work hard for our success – and are happy that this is rewarded.


In roughly 55 years of company history, Testo SE & Co. KGaA has written many large and small success stories. Here is an overview of the best ones.

Testo worldwide

With 30 subsidiary companies and over 80 distribution partners, Testo SE & Co. KGaA is represented on all five continents. Worldwide, about 2450 staff are working for the company.


Interesting people, impressive careers, exciting product applications and fascinating technology. The Testo world has many ineresting stories to offer.


As a company operating in the air conditioning and environmental measuring technology sector, the sustainable use of resources is an integral part of Testo's self-image.