With this kit, you will be equipped for the most important measurements involving domestic heating systems: the testo 300 flue gas analyzer is supplied with O2 and CO sensor up to 4,000 ppm, basic flue gas probe, pressure test accesory kit, 2 x pipe temperature clamp probes,testo Bluetooth&reg; Connector, instrument carry case, AC USB power supply.

With this kit, you will be equipped for the most important measurements involving domestic heating systems: the testo 300 flue gas analyzer is supplied with O2 and CO sensor up to 4,000 ppm, basic flue gas probe, testo Bluetooth&reg; Connector, 1x testo 510i bluetooth differential manometer, 2 x testo 115i bluetooth pipe clamp thermometer, instrument carry case, AC USB power supply.

With this kit, you will be equipped for the most important measurements involving domestic heating systems: the testo 300 flue gas analyzer is supplied with O2 and CO sensor up to 4,000 ppm, basic flue gas probe, testo Bluetooth&reg; Connector, 1x testo 510i bluetooth differential manometer, 2 x testo 115i bluetooth pipe clamp thermometer, 1 x testo gas leak detector, instrument carry case, AC USB power supply.

The testo 300 FGA 'Smart' upgrade set allows connectivity to the testo Smart probe range. You can perform up to four additional wireless measurements in parallel to your exhaust gas measurement . Using the testo bluetooth adaptor supplied in the set, switch on the individual Smart Probes and they will automatically connect to your flue gas analyzer. All parallel measurements are also automatically displayed on your testo 300 and can be started and stopped simultaneously. Via the connection to the Smart App, the measurement, documentation and data transfer of all parallel measurements is carried out in a fast and professional manner.

The testo 300+ Flue Gas Analyser Heat Pump Kit is a professional measurement package for engineers working across boiler and heat pump heating systems. It supports combustion testing alongside wider heating diagnostics, making it suitable for modern mixed-technology installations. It is ideal for boiler servicing and combustion checks, heat pump-related service workflows, commissioning, diagnostics and efficiency reporting.

The testo 300+ Flue Gas Analyser Advanced Kit is a professional combustion analysis package for engineers who need accurate boiler testing, diagnostics and emissions measurement. It supports efficient on-site workflows with dependable flue gas readings and practical accessories for more demanding service tasks. It is suited to advanced boiler servicing, commissioning, emissions checks, combustion performance diagnostics and CO safety testing.

The testo 300+ Flue Gas Analyser Smart Kit is a connected professional combustion testing package for modern heating engineers. It combines accurate flue gas measurement with smart digital workflows to simplify boiler servicing, diagnostics and reporting. It is ideal for boiler servicing and commissioning, digital reporting, combustion efficiency checks, CO safety testing and emissions documentation.

The testo 300+ Flue Gas Analyser Ultra Smart Kit is a premium connected combustion testing package for engineers who need advanced diagnostics and efficient digital reporting. It supports accurate flue gas analysis, streamlined workflows and reliable documentation for demanding heating applications. It is suited to advanced boiler servicing, emissions and compliance checks, smart diagnostics, CO safety testing and digital reporting.

The testo 300 flue gas analyzer with Longlife sensors is ideal for heating engineers who carry out installation and maintenance work on heating systems several times a day. It combines decades of experience in measuring technology with contemporary smart-touch operation, robust construction and e-mailing of reports. The testo 300 enables easy measurement of flue gas, draught, pressure, ambient CO and differential temperature – you can also retrofit an NO sensor.

The testo 300LL Longlife Standard Kit is a professional flue gas analyser package with long-life O₂ and CO H₂-compensated sensors up to 30,000 ppm, with NO measurement available as a retrofit option. It provides reliable combustion data for engineers carrying out demanding heating service work. It is ideal for boiler servicing and commissioning, combustion efficiency checks, CO safety testing and emissions reporting.

The testo 300LL Longlife Flue Gas Analyser with Printer is a durable professional combustion analyser with long-life O₂ and CO H₂-compensated sensors up to 30,000 ppm, with NO measurement available as a retrofit option. It supports accurate testing and instant printed documentation on site. It is ideal for boiler servicing and commissioning, high-range CO safety checks, emissions testing and printed service reporting.

The testo 300LL Longlife Flue Gas Analyser with NO Sensor is a durable professional combustion analyser with long-life O₂, CO H₂-compensated up to 30,000 ppm, and integrated NO measurement for advanced emissions testing. It is built for demanding boiler diagnostics and long-term field use. It is suited to boiler servicing and commissioning, CO and NO emissions checks, combustion efficiency testing and compliance reporting.

The ideal equipment for heating engineers: with this testo 320 flue gas analysis set, you can carry out your measuring tasks on heating systems quickly and efficiently. Use the flue gas analyser to measure flue gas, draught, pressure and differential temperature. Can also measure ambient CO and detect gas leaks with an optional additional probe.

The testo 320 basic features all the essential functions for carrying out flue gas analysis on domestic heating systems, including flue draught, pressure measurements, and differential temperature measurement. The flue gas analyser is easy to use with its full colour graphic display featuring a user-friendly menu guidance. The analyser measures both O2 and CO (4,000ppm sensor fitted as standard) and can also display calculated parameters such as combustion ratio, CO2, etc.

The testo 327 Standard Kit + Gas Leak Detector + CPA1 Kit is a complete flue gas analysis and gas safety testing package for engineers carrying out boiler, appliance and CO safety checks. It supports combustion measurement, leak detection and CPA1-related testing in one practical kit. It is suited to boiler servicing and commissioning, gas leak detection, CPA1 testing and CO safety checks.

The testo 327 Standard Kit + Gas Leak Detector is a professional combustion analysis and gas safety package for heating engineers working on boilers and gas appliances. It combines flue gas measurement with gas leak detection to support safer installation, maintenance and fault-finding. It is ideal for boiler servicing, combustion and CO checks, and gas leak detection during service or repair work.

The testo 327 Advanced Kit + Gas Leak Detector is a professional combustion and gas safety package for heating engineers working on domestic and light commercial systems. It combines accurate flue gas analysis with gas leak detection to improve service efficiency and safety checks. It is suited to boiler servicing and commissioning, gas leak detection, combustion checks, CO safety testing and performance diagnostics.

The testo 327 Advanced Kit + Gas Leak Detector + CPA1 Kit is a complete professional testing package for combustion analysis, gas leak detection and CO safety checks. Designed for heating engineers, it supports accurate boiler diagnostics, appliance testing and compliance-focused reporting. It is ideal for advanced boiler servicing, gas leak detection, CPA1 testing, CO safety checks and combustion performance assessment.

The testo 327 Standard Kit is a professional flue gas analyser for heating engineers carrying out combustion testing on domestic and light commercial boilers. It provides reliable measurement of key flue gas values to support safe, efficient boiler operation and routine maintenance. It is suited to boiler servicing and commissioning, combustion efficiency checks, CO safety testing and fault diagnosis.

The testo 327 Advanced Kit is a professional flue gas analyser package for engineers who need reliable combustion testing and enhanced boiler diagnostics. It measures key flue gas values to help assess appliance performance, safety and efficiency during servicing or commissioning. It is ideal for advanced boiler servicing, combustion efficiency checks, emissions testing and heating system fault diagnosis.

The testo Analyser Hard Case provides secure and organised storage for testo 300+ or other flue gas analysers, probes, and accessories. With its durable build, compact size, and custom-moulded interior, it offers reliable protection for your essential equipment.

General technical data	Weight 3880 g
	Dimensions 520 x 400 x 130 mm (LxWxH)
	Product-/housing material Plastic
	Product colour Black

Instrument case (height: 130 mm) - for instrument, probes and accessories

Instrument case (height: 130 mm) - for instrument, probes and accessories

General technical data

General technical data