Testo 300+ Flue Gas Analyser Handset Only
The Testo 300+ Flue Gas Analyser Handset Only gives heating engineers a cost-effective way to replace, upgrade or expand their existing Testo flue gas analyser. Instead of purchasing a complete kit, you can continue using your compatible probes, carry case and accessories while benefiting from the latest Testo 300+ technology.
Designed for domestic gas and oil boiler servicing, the Testo 300+ combines a responsive 5-inch HD touchscreen with long-life O₂ and H₂-compensated CO sensors. As a result, you can carry out combustion analysis more quickly while producing accurate, reliable results every time.
Upgrade Without Replacing Your Entire Kit
If your existing analyser has become damaged or you’re ready to upgrade from an older Testo model, the Testo 300+ Handset Only offers a practical solution. You can continue using your existing accessories, so there’s no need to replace equipment that still works perfectly.
In addition, the modern touchscreen interface and Bluetooth connectivity help you complete jobs more efficiently while keeping replacement costs to a minimum.
Built for Everyday Boiler Servicing
The Testo 300+ helps engineers carry out routine servicing, commissioning and fault finding with confidence. The large HD touchscreen responds quickly, while the simple menu structure makes every function easy to access.
Furthermore, the analyser features a 5-year oxygen sensor and an H₂-compensated carbon monoxide sensor capable of measuring up to 8,000 ppm. Automatic pump protection also helps safeguard the sensors during high CO measurements, so you can work with greater confidence on demanding jobs.
Smart Connectivity
Connect up to four compatible Testo Smart Probes using the integrated Bluetooth connection. You can monitor wireless temperature and pressure measurements directly from the analyser or through the Testo Smart App.
Meanwhile, you can create professional measurement reports on site and share them digitally using QR codes or compatible software. This means you spend less time completing paperwork and more time serving customers.
Ready for Future Requirements
The Testo 300+ grows with your business. For example, you can add an optional NO sensor whenever your work requires NOx measurements.
Therefore, you don’t need to replace the analyser as your testing requirements change. Instead, you can upgrade the instrument and continue using the same reliable platform for years to come.
Compare the Testo 300+ Range
Whether you’re replacing your existing analyser or investing in a complete kit, the comparison below shows exactly what’s included with each Testo 300+ package.
| Included Equipment | Handset Only | Standard | Advanced | Smart | Ultra-Smart |
|---|---|---|---|---|---|
| Testo 300+ Analyser | ✓ | ✓ | ✓ | ✓ | ✓ |
| USB Bluetooth Interface | ✓ | ✓ | ✓ | ✓ | ✓ |
| Calibration Certificate | ✓ | ✓ | ✓ | ✓ | ✓ |
| 180mm Flue Gas Sampling Probe | – | ✓ | ✓ | ✓ | ✓ |
| Protective Carry Case | – | ✓ | ✓ | ✓ | ✓ |
| 2x NTC Clamp Probes | – | – | ✓ | – | – |
| Pressure Connection Kit with 2x Silicone Hoses | – | – | ✓ | – | – |
| 2x Testo 115i Clamp Thermometer | – | – | – | ✓ | ✓ |
| 1x Testo 510i Differential Pressure Meter | – | – | – | ✓ | ✓ |
| 1x Gas Leak Detector | – | – | – | – | ✓ |
Why Buy from Test4Less?
At Test4Less, we supply genuine Testo instruments backed by expert technical advice and competitive pricing. Whether you’re replacing an existing handset or upgrading your current analyser, the Testo 300+ Flue Gas Analyser Handset Only provides a reliable and future-ready solution for professional heating engineers.