This summer, when you invest in a Testo digital manifold or flue gas analyser/kit, you’ll receive a free tool set. Eligible models include the Testo 550s, 558s, 310, 327, 300+, and 300LL. Testo's flue gas analysers (FGAs) and digital manifolds deliver the precision and efficiency needed to fulfil job commitments. Even better, for a limited time, qualifying purchases include a free tool set - so act fast to upgrade your analyser or manifold!
Quick Links
- Summer Just Got Even Better with Testo – Free Gift with Select FGAs & Digital Manifolds
- Testo Flue Gas Analyser Offers for Heating Engineers
- Testo Digital Manifold Offer for HVAC/R Engineers
- Further Information
Summer Just Got Even Better with Testo – Free Gift with Select FGAs & Digital Manifolds
Running until the 31st August 2026, when you buy a qualifying Testo flue gas analyser or digital manifold from tester.co.uk, you’ll receive a complimentary tool set:
- Free Spanner Set with any Testo 310 Flue Gas Analyser or 550s Digital Manifold
- Free Water Pump Plier Set with any Testo 327, 300+, or 300LL Flue Gas Analyser and 558s Digital Manifold
Get Top-Tier Performance with an Added Bonus – Shop Testo’s Summer Offers
Testo Flue Gas Analyser Offers For Heating Engineers
Whether you're servicing domestic boilers or commissioning commercial heating systems, get a free tool set this summer with Testo's flue gas analyser offers:
- Free spanner set with the Testo 310 Flue Gas Analyser
- Free Water Pump Plier Set with Testo 327, 300+, and 300LL Flue Gas Analysers and FGA Kits
Testo 310 – Service Domestic Boilers Faster and Streamline Reporting
Testo 310 Flue Gas Analyser
Combining simple functions with precise measurement, the Testo 310 Combustion Analyser is perfect for basic measurements of domestic heating systems.
- Measure O2, CO, temperature, draught, pressure, efficiency, and flue gas loss - all the tests you need to inspect domestic heating systems safely and comprehensively
- 30-second sensor zeroing - take accurate readings and protect your reputation as a reliable professional
- Intuitive menu - complete jobs quickly with easy, fast operation
- Connect to the Testo Smart App via Bluetooth - finish all work on site: calculate gas flow pressure, flow, and return temperature, and document and send readings
- 8-hour battery life - carry out a full day's work without worrying about recharging
Testo 327 – Simplify and Speed Up Testing of Domestic Boilers
Testo 327-1 Flue Gas Analysers
Testo 327-1 Flue Gas Analyser Standard Kit & Gas Leak Detector
Work faster and smarter with the Testo 327-1 Flue Gas Analyser. Thoroughly investigate boilers with this entry-level combustion analyser.
- Measure O2, CO, CO2, temperature, draught, pressure, efficiency, and flue gas loss - safely and comprehensively assess boilers
- Robust with a protective sheath and condensate trap - ready for any environment your job takes you
- Stable measurements within 30 seconds - complete tests quickly and reliably
- Plug and play sensors and probes - expand the analyser's testing capacity to meet the challenges of your job
Testo 300+ - Adaptable FGA for Domestic & Commercial Boilers
The Testo 300+ is a comprehensive combustion analyser suitable for domestic boiler checks and services.
- Measure O2, CO, CO2, temperature, draught, pressure, efficiency, and flue gas loss - provide customers with a comprehensive boiler assessment
- Adaptable design - space for an NO sensor and compatibility with Testo Smart Probes expands the analyser's measurement capacity so it can check and service commercial boilers if required
- Connect to the Testo Smart App via Bluetooth - create and send reports on-site, no more taking work home
- Large touchscreen - view all readings simultaneously, improves job ease and efficiency
- Robust plastic casing, scratch-resistant screen, and magnetic holder - will meet the challenges of demanding settings
Testo 300LL – Durable, Dependable FGA for Commissioning Commercial Heating Systems
Testo 300LL Long-Life Flue Gas Analysers
Testo 300LL Long-life Flue Gas Analyser with NOx Sensor & Printer
The 300LL's long-life sensors and Bluetooth connectivity make it perfect for servicing and commissioning commercial heating systems.
- Measure O2, CO, CO2, temperature, draught, pressure, efficiency, and flue gas loss – everything you need for thorough boiler assessments
- Long-life O2 and H2 compensated CO sensors – supports daily intensive use for up to 6 years, allowing you to save on at least one sensor replacement over the course of a normal working life
- Adaptable design – space for an NO sensor and simultaneous compatibility with up to four Testo Smart Probes, enabling servicing and commissioning of commercial heating systems
- Signature function and PDF reporting – create, sign, and send reports on the analyser so you can complete jobs on site before moving onto the next one
- Large, 5-inch HD display – see all parameters simultaneously for clearer, faster servicing
- 10-hour rechargeable battery life – easily complete a full day’s work without losing time waiting for the analyser to recharge
Testo Digital Manifold Offers For HVAC/R Engineers
Always have the tools you need to hand, prepare for the future of heating and refrigeration this summer with Testo's digital manifold offers:
- Free spanner set with the Testo 550s Smart Digital Manifold
- Free Water Pump Plier Set with the Testo 558s Digital Manifold
Free Spanner Set with Testo 550s – Efficient, Straightforward Testing of Heat Pumps & Refrigeration Systems
Testo 550s Smart Digital Manifolds
The Testo 550s Smart Digital Manifold is a compact and robust two-way valve block with Bluetooth connectivity. It is optimised for commissioning, servicing, and maintaining heat pumps and refrigeration systems, especially those with A2L refrigerant.
- Wirelessly connects to the Testo Smart App and Testo Smart Probes, expanding measurement scope - measure temperature, humidity, and pressure
- Large, graphic display - work efficiently thanks to an easy-to-read screen
- Programs and measurement menus guide users through the process - don't lose time to confusion ever again
- Automatically determines system parameters such as superheat, pressure drop test or vacuum - makes testing simpler
- View measurements and create digital documents via the Testo Smart App - complete jobs on-site, saving time
- Set favourites in the Testo Smart App, for transfer to the 550s - faster, easier measurement
Free Water Pump Plier Set with Testo 558s – Futureproof Testing of Refrigeration Systems
Testo 558s Smart Digital Manifolds
Compatible with over 96 refrigerants, including Class A3 and A2L flammable refrigerants, the Testo 558s Smart Digital Manifold is a four-way valve block with an intuitive touchscreen and Bluetooth connectivity.
- Data logging with 30-minute trend curves - log data and track 30-minute trends curves for fast, reliable diagnostics
- IP54 - built to meet the challenges of rugged worksites
- Touchscreen and function buttons for easy operation even when wearing gloves - work easily and efficiently
- Connect to the Testo Smart App and Testo Smart Probes via Bluetooth - expand measurement scope and complete documentation on-site
- All-in-one tool through wireless connection to Testo Smart Probes - expand testing to include temperature, humidity, and pressure
- OTA updates add new refrigerants - ensures the manifold is always up-to-date and ready for any job
Further Information
For more information about Testo’s summer offers, contact our Sales team on 01642 931 329 or via our online form.
In the meantime, please browse our extensive selection of Testo digital manifolds and flue gas analysers.
Upgrade to Faster, Smarter Measurement and a Free Tool Set – View Testo's Summer Offers
