Testo 300+ Flue Gas Analyser Kits

 
Sale!
SKU: TES/300+-Add-NOx-sensor
  • Available in four professional kit options
  • Large 5-inch HD smart touchscreen display
  • Bluetooth connectivity & digital reporting
  • Built for fast, accurate flue gas analysis

Original price was: £743.20.Current price is: £706.04. (ex VAT)

£847.25 (inc VAT)

Earn 743 – 1367 points

Usually ships In 3 to 5 working days

Why buy from Test4Less?

Sale!
  • Available in four professional kit options
  • Large 5-inch HD smart touchscreen display
  • Bluetooth connectivity & digital reporting
  • Built for fast, accurate flue gas analysis
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Original price was: £743.20.Current price is: £706.04. (ex VAT)

£847.25 (inc VAT)

Earn 743 – 1367 points

Usually ships In 3 to 5 working days

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Testo 300+ Flue Gas Analyser

The Testo 300+ Flue Gas Analyser is designed to make boiler servicing, commissioning and fault finding quicker and easier. Featuring a large 5-inch HD touchscreen, long-life sensors and Bluetooth connectivity, it delivers fast, accurate combustion analysis while simplifying everyday testing for heating engineers.

Compatible with the Testo Smart App, the analyser allows you to record measurements, create digital reports and share results directly from site. Its intuitive interface and guided measurement menus reduce setup time, while automatic calculations help improve efficiency on every job.

Choose the Right Kit

The Testo 300+ is available in four kit options, allowing you to select the equipment best suited to the work you carry out.

The Standard Kit includes everything needed for professional flue gas analysis, making it ideal for routine boiler servicing and combustion testing.

The Advanced Kit builds on this by adding pipe clamp temperature probes and a pressure testing kit, making it suitable for engineers who regularly carry out gas pressure testing and commissioning work.

The Smart Kit includes two wireless Testo 115i Clamp Thermometers and a Testo 510i Differential Pressure Meter. These Bluetooth instruments work directly with the analyser, providing wireless temperature and pressure measurements while reducing the number of cables required on site.

The Ultra-Smart Kit offers the most comprehensive package. Alongside all the equipment included in the Smart Kit, it also includes a gas leak detector, giving engineers everything they need for combustion analysis, pressure testing, temperature measurement and gas leak detection in one complete solution.

Designed for Everyday Servicing

The Testo 300+ combines a responsive HD touchscreen with robust construction to withstand daily use. The analyser features a long-life oxygen sensor with up to five years’ service life, an H₂-compensated carbon monoxide sensor capable of measuring up to 8,000 ppm and automatic pump protection during high CO measurements.

Bluetooth connectivity also allows compatible Testo Smart Probes to be connected wirelessly, while digital reports can be created and shared directly from the analyser or the Testo Smart App.

Why Buy from Test4Less?

At Test4Less, we supply genuine Testo products backed by expert technical advice and competitive pricing. Whether you choose the Standard, Advanced, Smart or Ultra-Smart Kit, you’ll receive a professional flue gas analyser designed to deliver reliable performance, accurate results and greater efficiency on every job.

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Testo 300+ Flue Gas Analyser

The Testo 300+ Flue Gas Analyser is designed to make boiler servicing, commissioning and fault finding quicker and easier. Featuring a large 5-inch HD touchscreen, long-life sensors and Bluetooth connectivity, it delivers fast, accurate combustion analysis while simplifying everyday testing for heating engineers.

Compatible with the Testo Smart App, the analyser allows you to record measurements, create digital reports and share results directly from site. Its intuitive interface and guided measurement menus reduce setup time, while automatic calculations help improve efficiency on every job.

Choose the Right Kit

The Testo 300+ is available in four kit options, allowing you to select the equipment best suited to the work you carry out.

The Standard Kit includes everything needed for professional flue gas analysis, making it ideal for routine boiler servicing and combustion testing.

The Advanced Kit builds on this by adding pipe clamp temperature probes and a pressure testing kit, making it suitable for engineers who regularly carry out gas pressure testing and commissioning work.

The Smart Kit includes two wireless Testo 115i Clamp Thermometers and a Testo 510i Differential Pressure Meter. These Bluetooth instruments work directly with the analyser, providing wireless temperature and pressure measurements while reducing the number of cables required on site.

The Ultra-Smart Kit offers the most comprehensive package. Alongside all the equipment included in the Smart Kit, it also includes a gas leak detector, giving engineers everything they need for combustion analysis, pressure testing, temperature measurement and gas leak detection in one complete solution.

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

Designed for Everyday Servicing

The Testo 300+ combines a responsive HD touchscreen with robust construction to withstand daily use. The analyser features a long-life oxygen sensor with up to five years’ service life, an H₂-compensated carbon monoxide sensor capable of measuring up to 8,000 ppm and automatic pump protection during high CO measurements.

Bluetooth connectivity also allows compatible Testo Smart Probes to be connected wirelessly, while digital reports can be created and shared directly from the analyser or the Testo Smart App.

Why Buy from Test4Less?

At Test4Less, we supply genuine Testo products backed by expert technical advice and competitive pricing. Whether you choose the Standard, Advanced, Smart or Ultra-Smart Kit, you’ll receive a professional flue gas analyser designed to deliver reliable performance, accurate results and greater efficiency on every job.

Key Features

  • Available in Standard, Advanced, Smart and Ultra-Smart Kits
  • Large 5-inch HD smart touchscreen display
  • 5-year O₂ sensor and H₂-compensated CO sensor
  • Measures CO concentrations up to 8,000 ppm
  • Bluetooth connectivity with the Testo Smart App
  • Generate and share digital measurement reports
  • Compatible with Testo Smart Probes
  • Automatic pump protection during high CO measurements
  • Optional NO sensor upgrade for NOx measurements
  • Rechargeable lithium-ion battery with USB-C charging
  • Intuitive guided measurement menus
  • Built for professional gas and oil boiler servicing

Technical Specifications

Measured Parameters O₂, CO (H₂-compensated), Flue Temperature, Ambient Temperature & Differential Pressure
O₂ Measuring Range 0 to 21% vol.
CO Measuring Range 0 to 8,000 ppm
CO Sensor H₂-compensated
O₂ Sensor Life Up to 5 years
Display 5-inch HD Smart Touchscreen
Connectivity Bluetooth & Wi-Fi
Compatible App Testo Smart App
Wireless Probe Compatibility Supports up to 4 Testo Smart Probes
Power Supply Rechargeable Lithium-Ion Battery
Battery Life Up to 10 hours
Charging USB-C
Data Storage Internal memory for measurements and reports
Operating Temperature -5°C to +45°C
Storage Temperature -20°C to +50°C
Dimensions 244 × 98 × 59 mm
Weight Approx. 800 g

What’s Included?

Standard Kit

  • Testo 300+ Flue Gas Analyser
  • 180mm Flue Gas Probe
  • USB Bluetooth Interface
  • Protective Carry Case
  • Rechargeable Lithium-Ion Battery
  • USB-C Charging Cable
  • Calibration Certificate

Advanced Kit

  • Testo 300+ Flue Gas Analyser
  • 180mm Flue Gas Probe
  • USB Bluetooth Interface
  • Protective Carry Case
  • 2 × Pipe Clamp Temperature Probes
  • Pressure Test Kit
  • 2 × Silicone Hoses
  • Rechargeable Lithium-Ion Battery
  • USB-C Charging Cable
  • Calibration Certificate

Smart Kit

  • Testo 300+ Flue Gas Analyser
  • 180mm Flue Gas Probe
  • USB Bluetooth Interface
  • Protective Carry Case
  • 2 × Testo 115i Wireless Clamp Thermometers
  • Testo 510i Bluetooth Differential Pressure Meter
  • Rechargeable Lithium-Ion Battery
  • USB-C Charging Cable
  • Calibration Certificate

Ultra-Smart Kit

  • Testo 300+ Flue Gas Analyser
  • 180mm Flue Gas Probe
  • USB Bluetooth Interface
  • Protective Carry Case
  • 2 × Testo 115i Wireless Clamp Thermometers
  • Testo 510i Bluetooth Differential Pressure Meter
  • Gas Leak Detector
  • Rechargeable Lithium-Ion Battery
  • USB-C Charging Cable
  • Calibration Certificate

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