Residential Combustion Analyzer

  • California Prop 65

The C161, with EOS Technology, eliminates the number one hassle experienced by HVAC technicians, the cost and down time of replacing the CO sensor. The EOS award-winning technology for combustion analysis replaces the everyday electro-optical sensor with EOS CO technology, lowering the cost of ownership. The C161 offers direct CO2 measurement and features a 30 second start up time.


• Measures: CO, CO2, Flue and Ambient Temperature.
• Calculates: O2, Efficiency (Net or Gross), Excess Air, CO/CO2 Ratio and Differential Temperature.


• Low battery warning.
• Magnetic mount.
• K-Type Temperature Inputs.
• Temp differential.
• Protective boot.
• EOS Sensor Technology.
• 8 Preprogrammed Fuels.
• 30 Second start time.
• High altitude compensation.
• 30 Memory positions.
• Data Logging.
• Digital.
• 6-Line display.
• IR printer link.
• LED Full water Trap Indicator.
• NOx Filtered.

Safety Standards
California Prop 65 Yes
Weights and Dimensions
Operating Weight (lbs) 2
Exterior Dimensions (D) (inches) 9.000000
Exterior Dimensions (W) (inches) 5.000000
Exterior Dimensions (H) (inches) 2.000000
Shipping Weight (lbs) 2.000000