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CD/11 Oil Firing Servicing & Commissioning Report

The CD/11 is OFTEC's official Oil Firing Servicing & Commissioning Report, used for annual oil appliance servicing. It provides a comprehensive record of the service including burner strip-down, nozzle check or replacement, combustion analysis, oil supply and tank inspection, and safety checks. It is the industry-standard form for oil appliance servicing in the UK.

BS 5410, OFTEC Technical Books 3 & 4Valid: Annual (12 months)

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Sample CD/11 certificate

Sample CD/11 Oil Firing Servicing & Commissioning Report certificate created with CertBox, showing the professional PDF layout with burner strip-down, cleaning, and nozzle check, combustion analysis (smoke number, co, co2, flue temperature), oil supply line, filter, and fire valve inspection

Sample CD/11 with fictional data. All personal details shown are fake.

What it covers

  • Burner strip-down, cleaning, and nozzle check
  • Combustion analysis (smoke number, CO, CO2, flue temperature)
  • Oil supply line, filter, and fire valve inspection
  • Tank condition and bund integrity
  • Flue condition and terminal check
  • Controls, safety devices, and efficiency measurement

Who needs a CD/11?

Homeowners with oil heating
Landlords
Insurance companies
OFTEC technicians

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Frequently asked questions about CD/11

Is a CD/11 the same as an oil service record?
The CD/11 is OFTEC's official numbered form. An oil service record may be issued in any format. Using the CD/11 format ensures all required checks are documented to OFTEC standards.
What smoke number is acceptable?
The Bacharach smoke number should be 0 (zero) for a clean burn. Any reading above 0 requires investigation and adjustment. CertBox warns you if the smoke number is above 0.

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