Flue Gas Analysers
A must-have for professional boiler engineers and installers, we stock all of the most popular flue gas analysis tools including the Anton Sprint eVo range, the Kane 455 boiler analyser and Testo flue analysers.
Find out more about Flue Gas Analysers below.

- Measure CO levels and temperature differentials
- Calculate levels of CO2, CO air free, excess air and combustion efficiency
- Can be used with the free TPI App to create multiple on-site reports

- O2, CO & over range protection
- Purge pump
- Protective magnetic sleeve
- Data hold, log & print functions
- 10-year KANE warranty


- Standard or advanced kit (additional printer)
- Easy and intuitive menu guidance
- Digital customer data management via Testo Smart App

- Available with a choice of up to three gas sensors: O2, CO, and NO
- Calculates CO2%, combustion efficiency, and excess air
- Measure draft and differential pressure

- Includes A770 Combustion Flue Probe and A768 Carry Case
- Measure CO levels and differential temperatures
- Calculate CO2 levels, CO air free, excess air and combustion efficiency

- Several kit options available
- Accurate combustion analysis
- Fast response for easy testing

- Direct carbon monoxide (CO) measurement
- O2 and CO sensor protection
- Six-line display and an easy-to-use rotary dial

- Can be used to conduct flue gas analysis remotely
- Measure pressures using the TPI SP620 Differential Pressure Meter Smart Probe
- Includes a TPI A768 Carry Case for storing and transporting the kit


- Fit with a NO sensor at point of purchase or retrospectively
- Compatible with Testo Smart App & Testo 510i, 115i, & 915i Smart Probes
- Available individually or as part of four kits

- Measure the levels of carbon dioxide, carbon monoxide and oxygen
- Double condensation protection to reduce downtime caused by moisture ingress
- Wireless communication for connection to iOS or Android smartphones and tablets

- Clear, easy-to-read display
- Pressure and tightness test
- Differential temperature for flow and return or radiator balancing

- Includes all standard accessories + infrared printer
- Portable, handheld design
- Measure everything from CO/CO2 ratio to flue temperature

- Includes everything in kit 1 plus pipe clamp temperature probes
- Built-in memory and PC connectivity
- High accuracy

- Wireless connection
- Measure differential temperature & pressure
- Calculate excess air and combustion efficiency

- Compact, lightweight, and durable
- Calculate CO2%, combustion efficiency and excess air
- Available with a choice of up to three sensors: O2, CO, NO, and low-range NO

- CPA1 flue gas analyser kit
- Measure O2, CO, and temperature
- Calculate CO2, CO air free, excess air, and combustion efficiency

- Supplied with a probe, charger, and case
- Enabled for use with TPI’s View App
- Large, clear, easy-to-read display

- Kane Printer
- Soft Carry Case

- Pressure Relief Valve
- Sprint Pro
- Clip CO personal carbon monoxide detection alarm

- IR printer, pipe temperature probes and gas detector included
- Advanced analyser with 10 built-in fuels
- Easy to use and suitable for any gas engineer

- Includes printer, smoke pump and oil filter
- Also comes with all standard accessories
- Built-in memory and advanced testing procedures

- Supplied with a probe, charger, case, & wireless printer
- Large, easy-to-read display with a Hold function
- Highly reliable chemical sensors

- Comes with infrared printer, cooked probe and pipe clamp temp probes
- Advanced flue analyser with built-in memory
- Excellent value

- Printer
- Pressure relief valve
- Two temperature clamps
About Flue Gas Analysers & Kits
At PASS we stock a wide range of gas detection and measurement, combustion and boiler servicing accessories for GasSafe Engineers. We are authorised distributors for leading brands such as Testo, Anton, Crowcon, TPI, and Kane and are committed to helping you get the right equipment for both commercial and domestic settings.
Whether you are looking for a standalone unit with or without an LCD screen or a smart analyser that can connect with Apps, there's plenty of choice at PASS. Check out some of our kit options that include useful accessories as well as additional tools for temperature measurements, flow and return, and pressure.
Frequently Asked Questions
What gases can a flue gas analyzer detect?
They typically measure parameters such as oxygen (O2), carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxides (NOx), Nitric Oxide (NO), sulfur dioxide (SO2), and sometimes other gases or particulate matter. By analysing these components, users can optimise combustion processes for efficiency, minimise emissions of pollutants, and ensure compliance with regulatory standards.
What industries commonly use flue gas analysers?
They play a vital role in industries such as heating, power generation, automotive, and environmental monitoring, helping to improve energy efficiency, reduce environmental impact and ensure appliances are safe.
What is the difference between a flue gas analyzer (FGA) and a combustion analyser?
In general, there isn't a big difference between them as they are often used interchangeably to refer to devices that measure and analyse the composition of gases produced by combustion processes. However, there can be slight differences in how these terms are used depending on context and specific applications and devices.
They generally both measure gases emitted from combustion processes, such as those from boilers, furnaces, or engines. FGA's focus on measuring parameters like oxygen, carbon dioxide, carbon monoxide, nitric oxide, nitrogen oxides, and other combustion-related gases. They are commonly used in heating, power generation, and environmental monitoring industries. Combustion analysers may offer additional features such as calculating combustion efficiency, stack draft, and performing other diagnostic functions beyond basic gas analysis.