Fyrite INSIGHT Plus

Fyrite® INSIGHT® Plus

A powerful, easy-to-use combustion analyzer powered by Tune-Rite®
  • Industry-exclusive Tune Rite® on-demand HVAC “assistant”
  • Measures O2, CO (w/NOx filter), stack/air temperature and draft/pressure
  • Exclusive B-Smart® pre-calibrated CO sensor for easy field replacement
  • Standard 3 year O2 sensor
  • Compatible with the Bacharach Reporting App
  • Nine standard fuels in North American configuration with option to add up to 2 additional fuels to the library


The Fyrite® INSIGHT® Plus is the perfect tool for busy residential/light-commercial technicians who need to ensure safe operating conditions and determine combustion efficiency. Powered by innovative Tune-Rite® software (patent pending), the industry’s first-ever on-demand HVAC “assistant,” the INSIGHT® Plus helps both new and seasoned technicians save money by making more thorough and efficient service calls.

The INSIGHT® Plus includes sensors for Oxygen (O2) and Carbon Monoxide (CO), which includes a built-in NOx filter. The O2 sensor has a 3 year warranty, while the CO sensor can be replaced in the field without down time using B-Smart® pre-calibrated sensors. The INSIGHT® Plus calculates values like efficiency, CO2* and CO air-free to help monitor combustion processes effectively and accurately.

*Note: The Fyrite® INSIGHT® Plus calculates CO2 value based upon other measured values during the combustion process. It does not measure CO2 directly.



  CO (w/integrated NOx filter)

  Stack temperature

  Primary/ambient air temperature

  Draft/differential pressure


0 to 20.9%

0 to 4000 ppm

-4 to 1202 °F (-20 to 650 °C)

-4 to 600 °F (-20 to 316 °C)

± 40 inH2O (±10 mbar)


2.8 in. (72 mm) color LCD w/backlight


4x AA batteries or optional USB wall adapter

Run Time

15 hours minimum (alkaline batteries)

Size (H x W x D)

8.0 x 3.6 x 2.3 in. (20.3 x 9.1 x 5.8 cm)


1 lb. (0.45 kg) including batteries


Natural gas, coal, oil 2/4/6, wood, kerosene, propane, butane, LPG, B5, KOKS, LEG, biofuel, +2 optional custom fuels

Operating Conditions

23 to 113 °F (-5 to 45 °C), 15 to 90% RH (non-condensing), 1 ATM ± 10%

Warm-up Time

30 to 60 seconds


100 locations


USB 2.0 (mini-B), IrDA


CE mark, EN 50379-1 & -3


2 years (including sensors)

3 years for long-life O2 sensor, if equipped


[1] Depending upon combustion equation setting (North American or Siegert) – see manual for details

Visitors: 46,317