UEI C161 Residential Combustion Analyzer

  • UEI C161 Residential Combustion Analyzer
  • UEI C161 Residential Combustion Analyzer
  • UEI C161 Residential Combustion Analyzer
  • UEI C161 Residential Combustion Analyzer
MSRP: $647.00
Price: $549.95
— You save $97.05


UEI C161 Residential Combustion Analyzer

Don't miss out on the great benefits of UEi Service+.
Register your combustion analyzer with UEi and get notified when its time to recertify.

Backed by UEi Service+ to allow up to 10 years’ warranty, same day recertification and a reduced cost of ownership. The C161 Residential Combustion Analyzer is easy to use with a rugged design, multiple sensor protections and altitude compensation. Prints to optional printer. Essential information for the installation and maintenance of furnaces and boilers.

C161 has two types of sensor protection; a NOx filtered CO sensor and Low Flow Detection. It also has sensor technology that reduces the cost of ownership, a Heat Exchanger test to check the exchanger integrity, and differential temperature. The C161 comes with high altitude compensation to maintain accurate readings at any altitude, auto-purge shut off, and 8 Pre-programmed fuels including Natural Gas and Propane.

The C161 has a 6-Line display to view readings on one screen, which is a favorite among technicians. The DMM Style dial makes it easy to select the test needed. It also features a water trap to protect the sensor with a check light to remind to look for condensate built-up, a magnetic boot for hands-free operations, and an IR printer port to print to an optional printer sold separately, making it easy to document test results for later analysis.
NOTE: CO-AirFree (COa) Calculation can be set to be displayed in the AUX screen.

Product Features & Functions:

  • Up to 6 Year warranty with annual recertification
  • 2 Types of Sensor Protection
  • NOx Filtered
  • K-Type Temperature Inputs
  • CO-AirFree (COa) Calculation
  • Low Flow Detection
  • Temp differential
  • 6 line backlit display
  • 8 Preprogrammed Fuels
  • 30 second start time
  • High altitude compensation
  • 30 Memory Positions
  • Protective Water Trap
  • Automatic fresh air purge
  • Magnetic mount
  • IR printer link (Printer not included)

UEi Combustion Analyzer Comparison


Temperature Measurement
Parameter Range Resolution Accuracy
Flue Temperature 32° to 1112°F (0° to 600°) 0.1°F (0.1°C) ±0.5°F (0.5°C)
Inlet Temperature (Internal Sensor) 0.1°F (0.1°C) ±1°F (1°C)
Inlet Temperature (External Sensor) 32° to 1112°F (0° to 600°) 0.1°F (0.1°C) ±0.5°F (0.5°C)
Flue Gas Measurement
Parameter Range Resolution Accuracy
Carbon Monoxide 0 to 2000 ppm 1 ppm ±3 ppm or ±5% rdg
(whichever is greater
(Optional H2 Compensated (if Applicable)) 2000 to 10000 ppm 1 ppm ±10% rdg
Carbon Dioxide 0 to 20% 0.1% ±0.3% volume
Parameter Range Resolution Accuracy
Oxygen 0 to 21% 0.1% ±0.3% volume
Efficiency (Net or Gross) 0 to 99.9% 0.1% ±1% rdg
Efficiency High (C) 0 to 119.9% 0.1% ±1% rdg
Excess Air 0 to 119.9% 0.1% ±0.2% rdg
CO/CO2 Ratio 0 to 0.9999 0.0001 ±5% rdg
CO-AirFree (COa) 0 to 9999 PPM 1 PPM ±5% rdg
Preprogrammed Fuels Pellets, Light Oil, LPG, Butane, Propane, Natural Gas, Bio Oil, Heavy Oil
Battery Life >8 hours (continuous with pump on)
Certification The C160 Series is TUV-tested and certified to EN 50379, Parts 1-3 in accordance to 1st German Federal Emission Control Ordinance (BimSchV)
Operating Temperature 32° to 113°F (0° to 45°C)
Operating Humidity 15% to 90% R.H.
Power Supply Rechargeable Batteries, USB Charging
Dimensions 8.54" x 4.18" x 1.86"
Weight 1 lb., 5.1 oz.


  • (1) UEI C161 Flue Gas Combustion Analyzer
  • (1) Flue Probe w/ Cone & Hose
  • (3) AA Rechargeable Batteries
  • (1) USB Charging cable
  • (1) Quick Start Guide


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