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Combustion Analyzer Comparison

Compare combustion analyzers by brand and model, including measured gases, CO range, reporting, batteries and sensor service.

Tap a model for current pricing and details. On a smaller screen, swipe or scroll across the table. The model column and column headings stay visible as you compare.

Combustion Analyzer ComparisonFeatures · Specs · Ownership
Brand / modelReference kit price*Gas readingsCO measurement rangeDisplay / reportingPowerPractical featuresSensor serviceCalibration / warranty
Bacharach
Fyrite InTech0024-8511$991.80O₂ and CO measured; CO₂ calculated0–2,000 ppm2.7-inch backlit monochrome LCD
Combustion App QR-code reports; optional IR printer		4 AA batteries; at least 15 hours with alkaline batteriesResidential combustion testing; no draft measurementField-replaceable O₂ and pre-calibrated CO sensorsAnnual calibration; 2-year warranty including sensors
Fyrite INSIGHT Plus Basic0024-8517$1,893.60O₂ and CO measured; CO₂ calculated0–4,000 ppm2.8-inch backlit color LCD
Combustion App QR-code reports; optional IR printer; Tune-Rite guidance		4 AA batteries; 15-hour alkaline runtimeDraft / pressure; Tune-Rite guidanceField-replaceable O₂ and pre-calibrated CO sensors; CO sensor has NOx filterAnnual calibration; 2-year instrument and CO sensor warranty; 3-year long-life O₂ warranty
Fieldpiece
CAT45CAT45$1,114.35O₂ and CO measured; CO₂ calculated0–4,000 ppm5.5-inch color touchscreen
Job Link live readings and reports; optional CATPR wireless printer		USB-C rechargeable; 7 hours typical; usable while chargingManual draft test; SensorVault sensor protectionUser-replaceable, pre-calibrated O₂ / CO sensorsAnnual recalibration; 1-year instrument / 4-year sensors
CAT85CAT85$1,852.15O₂ and CO measured; CO₂ calculated0–4,000 ppm5.5-inch color touchscreen
Job Link live readings and reports; optional CATPR wireless printer		USB-C rechargeable; 5 hours typical; usable while chargingLive draft; dual manometer; HydroCycle water removalUser-replaceable, pre-calibrated O₂ / CO sensorsAnnual recalibration; 1-year instrument / 4-year sensors
Sauermann
Si-CA 030 / Kit 2AS27496$948.20O₂ and CO; CO₂ calculated0–8,000 ppm2.8-inch color display; five buttons
Sauermann Combustion app; measureQuick; optional wireless printer; no internal measurement storage		Rechargeable Li-ion; more than 8 hoursDraft / pressure measurementsManufacturer sensor serviceAnnual recalibration; 2-year manufacturing-defect warranty
Si-CA 030 / Kit 3AS27501$1,965.07O₂, CO and NO; CO₂ and NOx calculated0–8,000 ppm2.8-inch color display; five buttons
Sauermann Combustion app; measureQuick; optional wireless printer; no internal measurement storage		Rechargeable Li-ion; more than 8 hoursDraft / pressure measurementsManufacturer sensor serviceAnnual recalibration; 2-year manufacturing-defect warranty
Si-CA 130 / Kit 2AS27507$1,630.44O₂ and CO; CO₂ calculated0–8,000 ppm4.3-inch color touchscreen
Internal storage of 2000 data points; Sauermann Combustion app and PC software; measureQuick; optional wireless printer		Rechargeable Li-ion; more than 8 hoursDraft / pressure measurementsField-replaceable, pre-calibrated sensorsAnnual recalibration; 2-year manufacturing-defect warranty
Si-CA 130 / Kit 3AS27511$2,537.02O₂, CO and NO; CO₂ and NOx calculated0–8,000 ppm4.3-inch color touchscreen
Internal storage of 2000 data points; Sauermann Combustion app and PC software; measureQuick; optional wireless printer		Rechargeable Li-ion; more than 8 hoursDraft / pressure measurementsField-replaceable, pre-calibrated sensorsAnnual recalibration; 2-year manufacturing-defect warranty
Seitron
NOVO LIGHT / O2-CO kitNOVO LIGHT$1,349.10O₂ and H₂-compensated CO; CO₂ calculated0–8,000 ppm7-inch color touchscreen
Seitron Smart Analysis; Bluetooth/QR sharing; PDF, CSV and XML; no included printer listed		Rechargeable Li-ion; 8 hours at 77°FDraft / pressure measurementsUser-replaceable O₂ sensor; contact Seitron for CO/NO sensor serviceAnnual calibration / service; O₂ sensor warranty: 4 years
NOVO / O2-CO kit, short hoseNOVO 1-S$1,755.00O₂ and H₂-compensated CO; CO₂ calculated0–8,000 ppm7-inch color touchscreen
Seitron Smart Analysis; Bluetooth/QR sharing; PDF, CSV and XML; no included printer listed		Rechargeable Li-ion; 8 hours at 77°FDraft / pressure measurementsUser-replaceable O₂ sensor; contact Seitron for CO/NO sensor serviceAnnual calibration / service; O₂ sensor warranty: 4 years
NOVO / O2-CO kit with built-in printerNOVO 1-P-S$1,935.00O₂ and H₂-compensated CO; CO₂ calculated0–8,000 ppm7-inch color touchscreen
Built-in thermal printer; Seitron Smart Analysis; Bluetooth/QR sharing; PDF, CSV and XML		Rechargeable Li-ion; 8 hours at 77°F excluding printingBuilt-in thermal printer; draft / pressureUser-replaceable O₂ sensor; contact Seitron for CO/NO sensor serviceAnnual calibration / service; O₂ sensor warranty: 4 years
NOVO 3 / O2-CO-NO kitNOVO 3$3,415.50O₂, H₂-compensated CO and NO; CO₂ and NOx calculated0–8,000 ppm7-inch color touchscreen
Seitron Smart Analysis; Bluetooth/QR sharing; PDF, CSV and XML; no included printer listed		Rechargeable Li-ion; 8 hours at 77°FDraft / pressure measurementsUser-replaceable O₂ sensor; contact Seitron for CO/NO sensor serviceAnnual calibration / service; O₂ sensor warranty: 4 years
Testo
310 II0563 3104 01$849.15Measures O₂ and CO; calculates CO₂0 to 4,000 ppm; without H₂ compensationConfigurable seven-line graphic display
testo Smart App digital documentation and email; optional Bluetooth printer		Rechargeable lithium battery, USB charging; over eight hours of operationDraft / gas pressure measurementsContact Testo for sensor serviceSee linked manufacturer terms
320 / O2-CO kit0564 3200 20$1,795.00Measures O₂ and CO; calculates CO₂; optional NO sensor upgrade0 to 5,000 ppm; without H₂ compensation5.5-inch IPS color touchscreen
testo Smart App remote control, second screen and reports; testo Smart Connect cloud data; optional Bluetooth printer		Rechargeable lithium-ion battery; USB-C charging; up to 10 hours; 20-minute charge gives about 60 minutes of use at 77°FOptional NO sensor upgrade; up to four compatible Bluetooth probes; draft and pressureUser-replaceable gas sensors per Testo instructions; annual authorized service check recommendedAnnual authorized check; 2-year instrument and O₂/CO sensor warranty; instrument up to 3 years with qualifying registration
330 / O2-CO kit0564 3300 20$2,495.00Measures O₂ and CO; calculates CO₂; optional NO sensor upgrade0 to 5,000 ppm; without H₂ compensation; active dilution extends to 20,000 ppm5.5-inch IPS color touchscreen
testo Smart App remote control, second screen and reports; testo Smart Connect cloud data; optional Bluetooth printer		Rechargeable lithium-ion battery; USB-C charging; up to 10 hours; 20-minute charge gives about 60 minutes of use at 77°FAutomatic zeroing with probe in the flue; active CO dilution; up to four compatible Bluetooth probesUser-replaceable gas sensors per Testo instructions; annual authorized service check recommendedAnnual authorized check; 4-year instrument and O₂/CO sensor warranty; instrument up to 5 years with qualifying registration
UEi
C161C161$593.26Measures CO and CO₂; calculates O₂0 to 2,000 ppmSix-line backlit display; rotary selector dial
Optional IR thermal printer		Three rechargeable AA batteries; USB charging; over eight hours continuous operation with pump onBasic combustion testing; CO over-range purge protection; no differential manometerUEi Service+ recertificationAnnual qualifying service; 1-year warranty, extendable up to 10 years
C163C163$953.66Measures CO and CO₂; calculates O₂0 to 2,000 ppmSix-line backlit display; rotary selector dial
Kane Wireless Printer App; optional IR thermal printer		Three rechargeable AA batteries; USB charging; over eight hours continuous operation with pump onDifferential pressure; over-range purge protectionUEi Service+ recertificationAnnual qualifying service; 1-year warranty, extendable up to 10 years
C165+C165+$1,472.58Measures CO and CO₂; calculates O₂Up to 10,000 ppm; H₂ compensated and NOx filteredSix-line backlit display; rotary selector dial
Kane Wireless Printer App; optional IR thermal printer; LINK connects included two wireless pipe clamps		Three rechargeable AA batteries; USB chargingLINK; two wireless pipe clamps includedUEi Service+ recertificationAnnual qualifying service; 1-year warranty, extendable up to 10 years
ACA/RACA/R$1,699.99Measures O₂, CO₂ and CO; optional NO sensor upgradeUp to 10,000 ppm; H₂ compensated and NOx filteredHigh-contrast graphic display
UEi HUB wireless app connectivity; optional wireless IR printer; optional HUB refrigeration probes add superheat, subcooling and evacuation screens		Three rechargeable AA batteries included; USB-C charging cableOptional refrigeration probes add SH / SC and evacuation readingsUEi Service+ recertificationAnnual qualifying service; 1-year warranty, extendable for working life

* Website prices update automatically as you browse. Before tax and shipping. Prices refer to the linked package. Follow the model link for details and current offers.

Gas readings: Measured gases come from installed sensors. Calculated O₂, CO₂ or NOx values are identified separately. The CO column gives the base measurement range. Active dilution capabilities are identified separately where listed. Battery runtimes are manufacturer ratings and depend on use.

Service and warranties: Replaceable sensors still require the manufacturer’s calibration and maintenance schedule. Extended warranty programs have conditions; check the linked terms for your exact US model.

Plan for calibration and sensor service

Consider the purchase price alongside calibration, sensor replacement, shipping and time without your analyzer. Contact the manufacturer or its authorized service center for calibration and repair.

Find manufacturer calibration and service contacts

Manufacturer specifications and service information