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.

- 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


- 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

- 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

- Cost-effective, comprehensive, condensation-resistant analyser
- Features a dual-beam IR CO2 sensor
- Wirelessly transfer measurements to a smartphone/ tablet with the Anton Sprint Pro App installed

- Store up to 99 tests
- Test warehouse indoor air quality
- Check vehicle cab heaters
- 1, 2, or 3 sensors

- Measure CO, CO2 and O2 levels
- Features a NO sensor for NO and NOx measurements
- Doubly insulated against condensation ingress, eliminating downtime caused by moisture absorption

- Direct CO and CO2 measurement and sensor protection
- Integrated wireless module
- Five versions with different sensor combinations

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

- Selection of probes and handles
- Extendable Probe Handle
- Sprint Pro
- Caters for any flue related scenario

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

- Printer
- Pressure relief valve
- Two temperature clamps

- Printer
- Pressure relief valve
- Two temperature clamps

- Selection of probes and handles
- Extendable Probe Handle
- Sprint Pro
- Caters for any flue related scenario

- Printer
- Pressure relief valve
- Probe set and two temperature clamps

- Printer
- Pressure relief valve
- Probe set and two temperature clamps

- Wirelessly transfer results to a smartphone/ tablet with the Anton Sprint Pro App installed
- Condensation-proof preventing downtime caused by moisture ingress
- Equipped with a NO sensor and dual beam IR CO2 sensor

- Includes a wireless module
- Supplied with a Kane IRP-2 Infrared Printer
- Five versions with different sensor combinations

- Pressure Relief Valve
- Sprint Pro
- Allows you to print
- Stay safe and cope with any flue related scenario

- Available with up to six gas sensors
- Sensors are pre-calibrated and field-replaceable
- Protective rubber holster


- Install, service, & check gas boilers
- Install, service, & check heat pumps
- Includes 115i Clamp Thermometer & 510i Differential Pressure Smart Probes

- Pressure Relief Valve
- Sprint Pro
- Allows you to print
- Stay safe and cope with any flue related scenario

- Measure O2, CO, and CO2
- Calculate CO2, CO:CO2, excess air, and combustion efficiency
- Wi-Fi, work light, 6-line display, and a rotary dial

- Tightness and CO/CO2 build-up tests
- Range of kits to choose from
- Multi-line display

- Five versions available with different sensor combinations
- Easy-to-use rotary dial and six-line display
- Includes a printer, air/ liquid probe, temperature probes, gas leak detector and pressure connection hose
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.