Testo 310 Entry-Level Combustion Analyzer for Boiler and Furnace Diagnostics

$USD 737.00
Testo - 0563 3100 01
Gas analyzer for reliable heating system evaluations
  • 12 months limited warranty
  • Battery lifetime up to 10 hours
  • Fast sensor zeroing in only 30 seconds
  • Illuminated display
  • Documentation of measurement results via printer with infrared interface

The testo 175 T2 temperature data logger has an internal sensor and a connection for an external temperature probe.

Accurate, rugged, and easy-to-use for heating system professionals

The Testo 310 entry‑level flue gas analyzer is a compact, easy‑to‑use instrument designed for plumbing, heating and HVAC professionals to perform reliable flue gas measurements, draft and pressure checks, and ambient carbon monoxide evaluations on boilers, furnaces, and water heaters; its rugged design, intuitive controls, and ability to support multiple fuel types make it well suited for routine service, safety inspections, and energy efficiency checks in residential and light commercial settings. Flue gas analysis instruments like this operate by sampling combustion exhaust and measuring gases such as oxygen (O₂), carbon monoxide (CO) and flue temperature to assess combustion efficiency and detect unsafe conditions, similar to how industrial analyzers are used to optimize combustion and control emissions in heavy equipment and boiler plants. 

This type of analyzer is especially suited for the HVAC service, building maintenance and energy auditing industries where technicians must ensure systems run safely and efficiently, with verified emissions and performance data for compliance and customer documentation. Users and industry overviews praise professional combustion analyzers for fast, repeatable results and clear diagnostics that improve tune‑ups, help prevent carbon monoxide hazards and support fuel savings; compared with basic CO detectors or visual inspection alone, a dedicated combustion analyzer offers actionable data on combustion efficiency and emissions that many service providers highlight as a competitive advantage in quality service.

The testo 310 entry-level flue gas analyzer

The testo 310 flue gas analyzer combines simplicity and reliability. With an intuitive menu, four integrated measurement modes (flue gas, draft, CO ambient air, and pressure), a large backlit display, and compact design, it’s ideal for plumbing and heating professionals performing routine system checks.

Flexible fuel selection

Choose from five fuel types, making it suitable for furnace efficiency tests, boiler tuning, and water heater inspections.

Hands-free convenience and rugged design

The built-in magnet allows attachment to metal surfaces, freeing your hands. The sensor zeros in 30 seconds, filters are easy to replace, and the durable design protects against impacts. Condensate is simple to empty, and readings can be sent to the optional testo turbo printer via infrared for on-site documentation.

What’s included

testo 310 flue gas analyzer, rechargeable battery, calibration certificate for O2, CO, hPa, and °C measurements, 7 in. conical sensor, silicone tube for pressure measurements, 10x particle filters, case.

Delivery scope

testo 310 flue gas analyzer, rechargeable battery, calibration certificate for O2, CO, hPa, and °C measurements, 7 in. conical sensor, silicone tube for pressure measurements, 5x particle filters, case.

Applications

Draught measurement in the flue gas duct

Draught measurement determines differential pressure between flue gas and ambient air, critical for low-pressure boiler systems. Correct draught ensures efficient combustion; too high increases flue gas loss, too low risks oxygen deficiency and soot formation.

Ambient CO measurement

Carbon monoxide (CO) is odorless, colorless, and poisonous. The testo 310 allows regular CO checks in areas around heating systems to ensure safety for people and compliance with safety standards.

Flue gas parameters measurement

Monitor CO, O2, and temperature in flue gases to track energy efficiency and pollutant output. Measurements help comply with legal limits and optimize heating performance. Data can be logged or transferred to a PC for record-keeping.

Pressure measurement on burners

Measure flow and resting pressures on gas burners. Accurate readings prevent operational malfunctions and safety risks, ensuring that the burner functions correctly and efficiently.

Advanced multi‑sensor measurement capabilities and enhanced data

The versatile Testo 310 Combustion Analyzer Kit, optimized for residential and light commercial applications requiring accurate flue gas, draft and temperature assessments; or complement your HVAC and environmental assessments with a precision airflow and temperature solution like the Thermo‑anemometer, ideal for ventilation performance evaluation and indoor air quality verification across complex facility systems. These instruments integrate seamlessly into rigorous maintenance, safety and compliance program protocols.

Q&A

Can the testo 310 be used with multiple fuel types?

Yes, it supports five fuel types, including gas, oil, and solid fuels, making it versatile for different heating systems.

How long does it take to zero the sensor?

The sensor can be zeroed in approximately 30 seconds, allowing quick setup for on-site measurements.

Is the testo 310 durable enough for daily professional use?

Yes, it has a rugged design that resists impacts and includes a condensate collection tank for convenient maintenance.

Can measurements be printed on site?

Yes, readings can be transferred to the optional testo turbo printer via infrared for immediate printouts.

What industries benefit most from the testo 310?

Heating, plumbing, and HVAC service companies, as well as safety inspectors and energy auditors, find the testo 310 particularly valuable for efficient and accurate flue gas analysis.

Temperature - TC Type K (NiCr-Ni)
Measuring range -20 to +100 °C
Accuracy ±1 °C
Resolution 0.1 °C
Reaction time < 50 s

Temperature (ambient temperature)

Temperature - TC Type J (Fe-CuNi)
Measuring range 0 to +400 °C
Accuracy ±1 °C (0 to +100 °C) ±1.5 % of mv (> 100 °C)
Resolution 0.1 °C
Reaction time < 50 s

Temperature (flue gas)

Flue gas O₂
Measuring range 0 to 21 Vol.%
Accuracy ±0.2 Vol.%
Resolution 0.1 Vol.%
Reaction time t₉₀ 30 s
Flue gas Draught
Measuring range -20 to +20 hPa
Accuracy ±0.03 hPa (-3.00 to +3.00 hPa) ±1.5 % of mv (Remaining Range)
Resolution 0.01 hPa
Flue gas degree of effectivity, Eta (calculated)
Measuring range 0 to 120 %
Resolution 0.1 %
Flue gas loss (calculated)
Measuring range 0 to 99.9 %
Resolution 0.1 %
Flue gas CO₂ calculation (calculated from O₂)
Measuring range 0 to CO₂ max (Display range)
Accuracy ±0.2 Vol.%
Resolution 0.1 Vol.%
Reaction time t₉₀ < 40 s
Pressure measurement
Measuring range -40 to +40 hPa
Accuracy ±0.5 hPa
Resolution 0.1 hPa
Flue gas CO (without H₂-compensation)
Measuring range 0 to 4000 ppm
Accuracy ±20 ppm (0 to 400 ppm) ±5 % of mv (401 to 2000 ppm) ±10 % of mv (2001 to 4000 ppm)
Resolution 1 ppm
Reaction time t₉₀ 60 s
Ambient CO
Measuring range 0 to 4000 ppm
Accuracy ±20 ppm (0 to 400 ppm) ±5 % of mv (401 to 2000 ppm) ±10 % of mv (2001 to 4000 ppm)
Resolution 1 ppm
Reaction time 60 s
General technical data
Dimensions 201 x 83 x 44 mm
Operating temperature -5 to +45 °C
Display type LCD
Display function Backlit 2-line display
Power supply Battery: 1500 mAh, mains unit 5V/1A
Storage temperature -20 to +50 °C
Weight (with probe) Approx. 700 g
More Information
Price $USD 737.00
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