Best Combustion Gas Analyzer in 2025
Updated on July 2025
#1
Recommended
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- Measures carbon monoxide and O2 levels, temperature, draft, and differential pressure in furnaces and boilers
- Features a sensitive CO and O2 sensor with a lifespan of up to 6 years and a measuring range of up to 4,000 ppm
- Allows for one-button operation from standby mode; features strong magnets for hands-free use
- Large HD touch display provides a clear overview of all measurements
- Includes O2 and CO sensors, optional NO sensor, spare combustion probes, filters, and rugged carrying case with easyHeat software
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- Measures carbon monoxide and O2 levels, temperature, draft, and differential pressure in furnaces and boilers
- Features a sensitive CO and O2 sensor with a lifespan of up to 6 years and a measuring range of up to 4,000 ppm
- Allows for one-button operation from standby mode; features strong magnets for hands-free use
- Large HD touch display provides a clear overview of all measurements
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#2
Value for Money
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- Ideal for detailed analyses of flue and exhaust gases, this detector aids in the maintenance of heating systems while providing simultaneous measurement of critical parameters via an easy-to-use app.
- Measures a variety of metrics including temperature (K TC and J TC), flue gas O2, draft, efficiency, pressure, and CO levels, ensuring comprehensive data collection without H2 interference.
- Features sensitive sensors for accurate readings of temperature and flue gases, delivering trustworthy results for various analytical needs.
- Designed for straightforward operation, the user-friendly interface allows professionals to conduct flue gas analysis effectively and minimize diagnostic errors.
- Includes essential accessories such as a rechargeable battery, calibration protocol, and durable components like a 180 mm probe, silicon hose, particle filters, and a sturdy carrying case.
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- Ideal for detailed analyses of flue and exhaust gases, this detector aids in the maintenance of heating systems while providing simultaneous measurement of critical parameters via an easy-to-use app.
- Measures a variety of metrics including temperature (K TC and J TC), flue gas O2, draft, efficiency, pressure, and CO levels, ensuring comprehensive data collection without H2 interference.
- Features sensitive sensors for accurate readings of temperature and flue gases, delivering trustworthy results for various analytical needs.
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#3
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- Automatic operation with pause functionality to conserve battery life
- Measures flue temperature and oxygen levels while calculating carbon dioxide and excess air percentages
- Displays combustion efficiency for evaluating furnace performance
- Features a field-replaceable oxygen sensor with stored calibration data for quick replacements
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- Automatic operation with pause functionality to conserve battery life
- Measures flue temperature and oxygen levels while calculating carbon dioxide and excess air percentages
- Displays combustion efficiency for evaluating furnace performance
- Features a field-replaceable oxygen sensor with stored calibration data for quick replacements
#4
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- Residential combustion analyzer with AC509 case
- Supported by UEi Service+
- Up to 10-year warranty with yearly recertification
- Large, illuminated 6-line display
- Includes heat exchanger testing capability
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- Residential combustion analyzer with AC509 case
- Supported by UEi Service+
- Up to 10-year warranty with yearly recertification
- Large, illuminated 6-line display
- Includes heat exchanger testing capability
#5
15% Off
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- Combustion analyzer designed for residential use
- Features an LCD display for easy readability
- Helps in monitoring combustion efficiency
- Suitable for household heating systems
- Essential tool for ensuring safety and performance
- Utilizes advanced technology for accurate measurements
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- Combustion analyzer designed for residential use
- Features an LCD display for easy readability
- Helps in monitoring combustion efficiency
- Suitable for household heating systems
- Essential tool for ensuring safety and performance
- Utilizes advanced technology for accurate measurements
#6
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- Power source: Requires 4 AAA batteries
- CO2 measurement resolution: 0.1%
- Carbon monoxide accuracy: ±10 ppm (0-200 ppm); ±5% (201-2000 ppm)
- CO measurement resolution: 1 ppm
- Backlit LCD display for easy reading
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- Power source: Requires 4 AAA batteries
- CO2 measurement resolution: 0.1%
- Carbon monoxide accuracy: ±10 ppm (0-200 ppm); ±5% (201-2000 ppm)
- CO measurement resolution: 1 ppm
- Backlit LCD display for easy reading
#7
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- Analyzes carbon monoxide levels from motorcycle, forklift, automotive, and small gas engine emissions.
- Includes waterproof hard case, water trap, particle filter, and NOx filter to minimize cross-sensitivity errors; features a stainless steel probe with alligator clip for simple exhaust pipe attachment and high-temperature silicone tubing.
- Equipped with a high-range electrochemical sensor (0.00 to 2.00 %vol CO) and built-in micro-pump (0.5 LPM), offering a response time of less than 30 seconds.
- Designed with durable ABS material and anti-slip rubber grip; back magnet for easy mounting on vehicle panels for hands-free operation.
- Comes with a 1-year limited warranty, USA NIST calibration, and QA certificates, tested and verified in the USA.
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- Analyzes carbon monoxide levels from motorcycle, forklift, automotive, and small gas engine emissions.
- Includes waterproof hard case, water trap, particle filter, and NOx filter to minimize cross-sensitivity errors; features a stainless steel probe with alligator clip for simple exhaust pipe attachment and high-temperature silicone tubing.
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#8
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- Backlit LCD display for easy readability
- Save and share reports via the FLUE-Mate app
- Interchangeable sensors for easy replacement
- Simultaneous display of efficiency, O2, CO2, CO, and flue gas temperature
- Built-in manometer for monitoring system pressures
- Compatible with various fuels including natural gas and propane
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- Backlit LCD display for easy readability
- Save and share reports via the FLUE-Mate app
- Interchangeable sensors for easy replacement
- Simultaneous display of efficiency, O2, CO2, CO, and flue gas temperature
- Built-in manometer for monitoring system pressures
- Compatible with various fuels including natural gas and propane
#9
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- Combustion analyzer measuring O2, CO, CO2 for efficiency and losses; ambient CO leak detection; draft meter for positive/negative readings; cracked heat exchanger testing; built-in differential pressure manometer and thermometer.
- Essential tool for HVAC technicians for installation and servicing of boilers and furnaces to maximize efficiency.
- Compact and user-friendly with one-button operation; features an intuitive menu and a graphic display with backlight for easy monitoring of boiler and burner processes.
- Measures, displays, stores, and prints data on combustion efficiency, O2, CO, CO2, along with temperature, draft, and pressure assessments; includes 12 programmable fuel types, suitable for high-efficiency systems.
- Includes S500-1 gas analyzer with necessary accessories: dual hose, probe, water trap, rechargeable battery, calibration certificate, operating manual, and calculations for high-efficiency systems (no Bluetooth or apps included).
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- Combustion analyzer measuring O2, CO, CO2 for efficiency and losses; ambient CO leak detection; draft meter for positive/negative readings; cracked heat exchanger testing; built-in differential pressure manometer and thermometer.
- Essential tool for HVAC technicians for installation and servicing of boilers and furnaces to maximize efficiency.
- Compact and user-friendly with one-button operation; features an intuitive menu and a graphic display with backlight for easy monitoring of boiler and burner processes.
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#10
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- Combustion Analyzer HC with printer for accurate diagnostics
- Features a wireless thermal printer for convenience
- Live draft pressure analysis assists in troubleshooting
- Patent-pending HydroCycle Pump technology reclaims accumulated water from the flue
- Integrated manometer reduces the number of necessary tools
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- Combustion Analyzer HC with printer for accurate diagnostics
- Features a wireless thermal printer for convenience
- Live draft pressure analysis assists in troubleshooting
- Patent-pending HydroCycle Pump technology reclaims accumulated water from the flue
- Integrated manometer reduces the number of necessary tools
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