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Carbon Monoxide Test Report

This report documents carbon monoxide testing at a property — ambient (room) CO readings at each location tested, plus flue-gas CO readings on each combustion appliance — along with any investigation or action taken as a result.

ASHRAE 62.1/EPA guidance for residential ambient CO action levels; manufacturer instructions for appliance flue-gas CO limitsValid: Annual (12 months)

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Sample CO Test Report certificate

Sample Carbon Monoxide Test Report certificate created with CertBox, showing the professional PDF layout with ambient co reading at each location tested, whether investigation/action was needed, combustion appliance flue-gas co readings

Sample CO Test Report with fictional data. All personal details shown are fake.

What it covers

  • Ambient CO reading at each location tested
  • Whether investigation/action was needed
  • Combustion appliance flue-gas CO readings
  • Whether each appliance is within manufacturer specification
  • Spillage/draft testing
  • Overall result and recommendations

Who needs a CO Test Report?

Gas/HVAC technicians
Landlords and property managers
Home inspectors
Homeowners

Create your CO Test Report with CertBox

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Frequently asked questions about CO Test Report

What ambient CO reading is a concern in a home?
ASHRAE 62.1 and the EPA treat 9 ppm (8-hour) as the action level for habitable spaces — considerably more protective than OSHA’s 50 ppm occupational limit, which applies to workers in industrial settings, not residents. Readings above roughly 6-9 ppm in a home are unusual and warrant investigation.
What is the difference between ambient CO and flue-gas CO?
Ambient (room) CO measures the air people are breathing, and even single-digit ppm readings are a concern in a home. Flue-gas CO measures the combustion appliance’s exhaust before it is vented outside, where readings are naturally much higher and are compared against the manufacturer’s specification rather than a room-air standard.

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