Testo 300 combustion Analyzer - Residential / Commercial Combustion Analyzer (with O2 and CO 0-4000)
- Fast and easy to operate: intuitive measurement menus and fast-response Smart-Touch display
- Includes O2 and CO Sensor (CO Sensor range 0-4,000ppm)
- Large 5-inch Smart-Touch HD display – see all the system's measurements at a glance
- Ready to measure at the touch of a button from standby mode
The Testo 300 Flue Gas Analyzer: Efficient Heating System Measurement
The Residential / Commercial Combustion Analyzer is a handheld flue gas measurement tool widely used by HVAC, boiler service, and safety inspection professionals to assess combustion quality and detect harmful gases. Industry sources such as TruTech Tools’ guide to combustion testing explain that measuring oxygen, carbon monoxide, and stack temperatures helps verify safe and efficient burner operation in residential and commercial heating systems.
Technicians praise combustion analyzers for providing fast and accurate flue gas readings that reveal efficiency and safety issues while enabling documented quality control. Unlike simple CO detectors, these analyzers measure multiple gases simultaneously, offering deeper insight and supporting fuel-use optimization, as detailed in industry analyses on HVAC combustion analyzers.
Advanced Measurement Technology
With O2 and CO sensors up to 4,000 ppm, the testo 300 ensures reliable results. Automatic sensor protection extends lifespan, and integrated fine pressure measurement enhances accuracy. Quick-change and flexible probes make it easy to access large or hard-to-reach flue pipes. Optional probes expand capabilities to gas flow pressure, gas pipe testing, and ambient CO measurement.
Smart and Intuitive Operation
The smart-touch display responds like a smartphone, with clear menus for fast results. On-site documentation of location, customer data, and signatures is simple, with PDF reports saved internally or sent via WLAN. The 5-inch HD display shows all system parameters at a glance, and data can be transferred directly to industry software via the Testo interface.
Durability and Convenience
With up to 10 hours of battery life, the testo 300 handles a full week of typical measurements. Strong integrated magnets allow hands-free operation, and the device is ready immediately in standby mode without waiting for zeroing.
Applications and Advantages
The testo 300 is ideal for HVAC technicians, heating system professionals, and energy auditors. Users praise its ease of use, fast reporting, and reliable sensors. Its smart-touch interface, versatile probes, and on-site documentation set it apart from competitors, making it a preferred tool for comprehensive flue gas analysis.
For professionals seeking comprehensive combustion diagnostics
The Testo 300 Pro Combustion Analyzer Kit delivers advanced multi‑sensor capability and extended sensor life for industrial service and HVAC applications, while the Testo 310 Combustion Analyzer Kit offers a reliable, cost‑effective solution tailored to residential furnace performance verification. For field teams requiring an integrated combustion measurement with printing and reporting, the Smoke Combustion Analyzer with Printer provides essential flue gas, draft and ambient CO analysis with on‑site documentation support. :contentReference[oaicite:0]{index=0}
Q&A
What types of measurements can the Testo 300 perform?
It measures flue gas, draft, pressure, ambient CO, and differential temperature. Additional functions like gas flow pressure and gas pipe testing require optional probes.
How long does the battery last?
The rechargeable battery lasts up to 10 hours, sufficient for a full week of standard measurements without recharging.
Can measurement reports be shared immediately?
Yes, PDF reports can be saved on the device or emailed directly to customers or offices via WLAN.
Are the probes interchangeable?
Yes, the testo 300 supports quick-change and flexible probes for different measuring tasks, including hard-to-reach flue pipes.
Is the device ready to use immediately?
Yes, in standby mode it is ready for instant measurement without waiting for zeroing.
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Replacement particle filter (10/pkg) - Spare particle filter |
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Bluetooth®/IRDA printer
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EasyHeat software (interface cable not included) |
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Specifications Testo 300 - Flue gas analyzer (O2, CO up to 4,000 ppm)
| Temperature - Type K TC | |
|---|---|
| Measuring range | -40° to 2192 °F / -40 to +1200 °C |
| Accuracy | ±0.9 °F (32.0° to 212.0 °F) / ±0.5 °C (0.0 to +100.0 °C) ±0.5 % of mv (Remaining Range) |
| Resolution | 0.1 °F (-40° to 1831.8 °F) / 0.1 °C (-40 to +999.9 °C) ±1 °F (Remaining Range) / 1 °C (Remaining Range) |
| Differential Pressure | |
|---|---|
| Measuring range | -40 to +80 InH₂O / -100 to +200 hPa |
| Accuracy | ±0.2 InH₂O (0 to +20.0 InH₂O) / ±0.5 hPa (0 to +50.0 hPa) ±1 % of mv (+20.0 to +40.0 InH₂O) / ±1 % of mv (+50.1 to +100.0 hPa) ±1.5 % of mv (+40.0 to +80 InH₂O) / ±1.5 % of mv (+100.1 to +200 hPa) |
| Resolution | 0.00 InH₂O / 0.01 hPa |
| Flue gas O₂ | |
|---|---|
| Measuring range | 0 to 21 Vol.% |
| Accuracy | ±0.2 Vol.% |
| Resolution | 0.1 Vol.% |
| Flue Gas Draft | |
|---|---|
| Measuring range | -4.00 to +16 InH₂O / -9.99 to +40 hPa |
| Accuracy | ±0.002 InH₂O (+0 to +0.0 InH₂O) / ±0.005 hPa (+0 to +0.1 hPa) ±0.01 InH₂O (+0.0 to +1.20 InH₂O) / ±0.02 hPa (+0.1 to +3.00 hPa) ±1.5 % of mv (1.20 to +16 InH₂O) / ±1.5 % of mv (3.01 to +40 hPa) |
| Resolution | 0.000 InH₂O (0 to 0.0 InH₂O) / 0.001 hPa (0 to 0.1 hPa) 0.00 InH₂O (Remaining Range) / 0.01 hPa (Remaining Range) |
| Efficiency (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 | Display range 0 to CO₂ max |
| Accuracy | ±0.2 Vol.% |
| Resolution | 0.1 Vol.% |
| 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 |
| Ambient CO | |
|---|---|
| Measuring range | 0 to 2000 ppm |
| Accuracy | ±10 ppm (0 to 100 ppm) ±10 % of mv (101 to 2000 ppm) |
| Resolution | 1 ppm |
| General technical data | |
|---|---|
| Operating humidity | 15 to 90 %rH non-condensing |
| Dimensions | 9.6 (including probe connection) x 3.9 x 2.3 LxWxH / 244 (including probe connection) x 98 x 59 LxWxH |
| Operating temperature | 23° to 113 °F / -5 to +45 °C |
| Protection class | IP40 |
| Product colour | black/orange |
| Display type | 5.0" touch display, HD 1280*720 pixels, IPS (160 k) |
| Power supply | Rechargeable battery, USB mains unit |
| Guarantee | Gas sensors (O₂, CO) 24 months; rechargeable battery: 12 months; Thermocouple 12 months |
| Authorizations | TÜV-tested according to 1st German Federal Immission Control Ordinance (BImSchV) EN 50379, Parts 1-3 |
| Warranty conditions | https://www.testo.com/guarantee |
| Memory | 1,000,000 measuring values |
| Storage battery type | Lithium-ion battery |
| Battery life | 10 h |
| Storage temperature | -4° to 122 °F / -20 to +50 °C |
| Weight | approximately 28.2 oz. / approximately 800 g |
| Charging temperature | 32° to 113 °F / 0 to +45 °C |
| Differential Pressure 4 Pa measurement - Piezoresistive | |
|---|---|
| Measuring Range | -0 to +0 InH₂O / -50 to +50 Pa |
| Accuracy | ±0.0 InH₂O (< 0 InH₂O) / ±0.3 Pa (< 10 Pa) ±3 % of mv (Remaining Range) |
| Resolution | 0.0 InH₂O / 0.1 Pa |
12" flue gas probe, 1/4" diameter, Tmax = 932 °F, with hose
| General technical data | |
|---|---|
| Length probe shaft | 11.811 in. / 300 mm |
| Cable length | 4.921 ft. / 1.5 m |
| Diameter probe shaft | 0.236 in. / 6 mm |
| Product colour | Black |
| Temperature maximum | 932 °F / 500 °C |
| Diameter | 0.2 in. / 6 mm |
| Weight | 12.84 oz. / 364 g |
Test Fußnote
Spare thermal paper
| General technical data | |
|---|---|
| Dimensions | 4.7 x 3.0 x 2.4 in. / 120 x 75 x 60 mm |
| Housing | paper |
| Product colour | white |
| Weight | 1.76 oz. / 50 g |
EasyHeat software (interface cable not included)
Instrument bag with carrying strap
| General technical data | |
|---|---|
| Dimensions | 10 x 20 x 5 in. (LxWxH) / 256 x 516 x 135 mm (LxWxH) |
| Product colour | Black |
| Weight | 49.4 oz. / 1400 g |
USB mains unit with cable
| General technical data | |
|---|---|
| Weight | 5.08 oz. / 144 g |
| Dimensions | 3.3 x 2.2 x 3.5 in. LxWxH / 85 x 55 x 90 mm LxWxH |
| Product colour | Black |
| Cable length | 6.562 ft. / 2 m |
| Power supply | 230 V AC / 5 V DC (2 A), micro USB, for the use in USA, CA, AU, Europe, UK, CN, Korea |
| Price | $USD 1,454.00 |
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