Ireland’s trusted Testo flue gas analyser service partner

For nearly 40 years Cuthbertson Laird Group have supplied the leading test instruments to the UK Market and are well-established as one of the best-known technical distributors in Ireland and throughout the UK. 

They are an Approved Distributor and Service Centre for Testo – one of only two in Ireland –  and have the facilities to service and calibrate Testo Flue Gas Analysers within the Mallusk Branch.

In the last few years, Cuthbertson Laird Group has grown quickly to become the partner of choice for many of Ireland’s Electrical and Mechancial Contractors. This is largely down to its reputation for quality, value for money and most importantly, word-of-mouth from satisfied customers.

The Northern Ireland service sector has increased significantly in 2021, and this has led to more pressure on Engineers and Contractors needing their Test Instruments serviced and calibrated within a tighter than normal timescale.

Mark Curistan, Service Manager, explained, “The feedback that we have been getting from the plumbing and heating engineers is that downtime on their FGA’s whilst they were being calibrated is a major factor in choosing their service partner as this is an essential piece of kit and in daily use.”

He continued, “This is why we have set up a system that makes a standard service of Testo 300, 310, 320, 327 and 330 in normally one to two days, but if they are found to be faulty and need replaced, we carry the full range in stock in Belfast so we can supply that day, if necessary.”

Cuthbertson Laird Group can conduct a comprehensive analysis and provide regular software and firmware updates on all Testo instruments. You can be assured your Testo instrument will be serviced to the highest standard, using only genuine parts, protecting your investment and warranty. 

When your instrument arrives at their service department, it gets booked into their specialised service management system. Using the proprietary Testo service software and diagnostic equipment, their specialists will calibrate and service your instrument. Your instrument data gets stored on their system so their service specialists can help you with any future issues.

Whether you are looking for new instruments or are in need of calibration for your current equipment, Cuthbertson Laird Group who are based in Mallusk, are here to help.

With a huge selection of locally stocked instruments from all of the leading manufacturers manufactured by all the major brands including Megger, Fluke, FLIR, GE Druck, Testo, Chauvin Arnoux, Seaward, Radiodetection, T&R TEST, Budenberg, Mitutuyo and many more.

Cuthbertson Laird Group also provides a nationwide calibration and repair service, and local facilities for the servicing of Electrical, Temperature, Pressure, HVAC, Safety, Airflow, Flue Gas Analysis, Power Quality and Thermal Imaging equipment etc. 

Testo FGA service and calibration includes:
• Traceable calibration of your instrument (includes a Certificate and sticker of calibration)
• Reminders when calibration for your instrument is due
• Complete software diagnostic of your instrument and firmware update
• Testing condition of all sensors and recommendation if replacement is required
• Replacing necessary filters
• Cleaning and testing pumps
• Cleaning and testing all internal gas paths
• Testing probe thermocouple (flue temperature)
• Verifying measurement reproducibility after calibration

For further information call: +44 (0) 28 9083 0302; Email: or visit: