testo 300+ Flue Gas Analyser Smart Kit
The testo 300+ Smart Kit is a connected flue gas analyser package for combustion testing, boiler servicing, and digital reporting workflows.How to Make Boiler Testing Smarter and More Efficient
When engineers need accurate readings and faster reporting, the testo 300+ Smart Kit supports a more connected workflow. It combines professional flue gas analysis with smart measurement handling, helping engineers test, record, and manage results more efficiently.This is useful when working across multiple service visits in one day. Engineers can capture combustion data clearly and support digital reporting processes without relying heavily on handwritten notes.
The smart kit format is ideal for heating professionals who want modern measurement technology for domestic, commercial, and light industrial heating systems.
Why Digital Workflows Improve Service Accuracy
Manual recording can lead to mistakes, missing readings, or delays after the job. The testo 300+ Smart Kit helps reduce these issues by supporting digital measurement workflows and clearer data handling.The analyser supports combustion measurements such as:
- CO and O₂ measurement: For combustion safety and air-to-fuel ratio checks.
- Flue gas temperature: For efficiency and appliance performance assessment.
- Draught and pressure support: For flue and system checks.
- Calculated values: CO₂, excess air, and efficiency for clearer diagnostics.
- Real-world application: Engineers can complete a boiler service, record combustion results, and support a professional report while still on site.
Solving Reporting and Documentation Challenges
Customers, landlords, and facilities teams often need clear evidence of service work. The testo 300+ Smart Kit supports more efficient documentation by making measurement data easier to manage.This helps engineers create consistent records for service history, internal quality checks, and maintenance reports. It also improves customer confidence by showing that boiler performance has been measured professionally.
Streamlining Your Connected Toolkit
The testo 300+ Smart Kit can be linked with compatible Testo probes, printer options, calibration services, replacement filters, and consumables. It also pairs well with gas leak detectors, Smart Probes, differential pressure meters, gas pressure test kits, and temperature measuring instruments.Built for Modern Heating Engineers
The testo 300+ Smart Kit is designed for professionals who want accurate testing and better data handling.- Smart kit format for connected workflows
- Suitable for domestic and commercial boiler testing
- Supports digital reporting and service records
- Compatible with selected Testo accessories and calibration services


































