Check out the latest Testo promotion, offering HVAC/R engineers even better value when they purchase one of their best-selling instruments.

Available until the 30th of April 2024, purchase selected Testo Flue Gas Analysers or Digital Manifolds from us and you'll also receive a free socket & bit set (worth over £39) with your purchase!

Choose From Two Great Offers!

For a limited time only we're giving away a FREE Testo branded Socket & Bit Set with every Testo 300 & Testo 327 Flue Gas Analyser and Testo 550i, Testo 550s & Testo 557s Digital Manifold:

There's never been a better time to upgrade to a Testo flue gas analyser!

Testo 300 Flue Gas Analyser

Why make measurements complicated when you can keep them simple? The testo 300 is wireless, efficient and smart. Now with a connection of up to 4 testo Smart Probes, a large 5” HD display with smart touch operation and the option to send customer reports wirelessly, it couldn't be easier.

  • Large 5” HD colour touchscreen display
  • Email/Bluetooth customer reports
  • Connect up to 4 testo smart probes via USB Dongle
  • Hydrogen compatible (20%)
  • New Smart domestic & commercial kits are available

Click here to explore the Testo 300 Flue Gas Analyser & kits >

Testo 327 Flue Gas Analyser

The testo 327 flue gas analyser is the best value flue gas analyser on the market, offering premium quality at affordable prices. Robust & reliable, the multifunction testo 327 is the perfect companion for any heating engineer:

  • Robust & reliable
  • Easy menu navigation
  • Measures O2 & CO, will calculate ratio, CO₂, and more
  • Hydrogen compatible (20%)
  • Testo IR Printer (advanced kits)
  • Soft carry case with shoulder strap

Click here to explore the Testo 327 Flue Gas Analyser & kits >

Effortless measurement of heat pumps, air conditioning and refrigeration systems.

Testo 550i Digital Manifold

The testo 550i digital manifold is equipped with Bluetooth, a 2-way valve block and a sturdy hook, and can be fully controlled via app and smartphone or tablet – for flexible, fast measurements and digital documentation.

  • All activities, from measurement to documentation, using the testo Smart App on your Smartphone
  • The smallest digital manifold on the market
  • Maximum reliability thanks to the extremely robust housing with IP54 protection class
  • Optionally expandable with testo Smart Probes for temperature, humidity and vacuum

Click here to explore the Testo 550i Digital Manifold >

Testo 550s Smart Digital Manifold

The testo 550s digital manifold with Bluetooth and 2-way valve block is ideal for your measuring tasks in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps.

  • All results at a glance thanks to the large graphic display
  • Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
  • Simple, wireless measurement of vacuum and temperature via automatic Bluetooth®
  • Even greater flexibility for your measurements and documentation with the testo Smart App

Click here to explore the Testo 550s Smart Digital Manifold >

Testo 557s Smart Digital Manifold

The testo 557s digital manifold with Bluetooth and 4-way valve block is ideal for your measuring tasks in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps.

  • All results at a glance thanks to the large graphic display
  • Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
  • Simple, wireless measurement of vacuum and temperature via automatic Bluetooth®
  • Even greater flexibility for your measurements and documentation with the testo Smart App

Click here to explore the Testo 557s Smart Digital Manifold >

Testo 570s Smart Digital Manifold

The testo 570s digital manifold with Bluetooth and a 4-way valve block is the optimal solution for refrigeration, air conditioning systems and heat pumps. Intelligent error analysis allows anomalies to be detected quickly, making it a reliable partner for both long-term and short-term measurements. 

  • IP54 protection for outdoor use
  • Long-term measurement with intelligent error detection in the testo Smart App
  • Long service life of up to 360 hours thanks to rechargeable (USB-C) and non-rechargeable batteries

Click here to explore the Testo 570s Smart Digital Manifold and kits >

About The Testo Branded Socket & Bit Set:

A perfect addition to the tool kit for your daily tasks. Features include:

  • Versatility: Comprehensive set with 32 pieces for a wide range of applications
  • Durable: Made with high-quality chrome vanadium, ensuring long-lasting durability
  • Compact Storage: Designed for convenience and portability
  • High Torque Capacity: Engineered to handle high torque applications with ease
  • Corrosion Resistance: Resistant to corrosion ensuring longevity and reliability