About Testo Limited

Testo Limited GU342UR


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 Limited Products:

We have an unrivalled range of test equipment which is divided into 3 sections:

  • Gas Analysis - Measuring instruments that analyse the different flue gas parameters of heating systems or industrial burners, thus helping adjust them to be more environmentally-friendly.
  • Hand Held Instruments - Portable instruments to measure temperature, humidity, air flow, pressure, pH values, conductivity, illumination levels, sound level, water activity, and instruments for adjusting refrigeration systems.
  • Infrared and Thermography - Non-contact instruments for measuring temperature. These instruments record the infrared radiation being emitted by an object (thermal radiation) and display this either as an individual value or thermal image.


Testo Limited 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

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.

Customer service is a cornerstone of our business management and we have introduced a number of innovative solutions over the last 2 years to improve our speed of delivery and customer communications across product supply, calibration and service. This is a continual process and we are always looking for ways we can improve our performance further.


Testo UK - meet the team!


The above 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.


Testo Headquarters

Testo, with its headquarters in Lenzkirch in the Black Forest, is a global leader in the field of portable measurement technology. Worldwide there is approximately 2,500 staff involved in research, production and marketing, with the key objective of developing innovative measurement solutions for our customers, e.g. in the fields of air conditioning and ventilation, food quality, building technology and emission control.

With 30 subsidiary companies and over 80 distribution partners, Testo is represented on all five continents, and is a true global manufacturer.

In 2012 Testo achieved a turnover of 221 million Euros. The basis for this success was, in addition to the highly qualified and motivated staff, the above average investment in future oriented product development. Approximately 10 percent of the company’s annual worldwide turnover is spent on Research & Development to provide a sustainable and success-oriented step towards the future.


Registered Office:

Testo Limited
Newman Lane
GU34 2QJ

Company Registration Number: 1688780

Telephone number: 01420 544433

E-mail: info@testo.co.uk

Testo Sales Coverage

Our technical sales team cover the UK and Ireland, please contact us on 01420 544 433 to arrange an appointment.