What is an OFTEC CD/11?
The OFTEC CD/11 is the Oil Servicing and Commissioning Report. It records the combustion readings, nozzle and pressure settings and efficiency of an oil-fired appliance during a service or commissioning visit.
OFTEC CD/11
OFTEC CD/11 Oil Servicing and Commissioning Report
Fill it in on site, sign on screen, and send a professional CD/11 PDF before you leave the job.
Free to build · Send it with a 7-day free trial
Need a CD/11 for your own property? It's issued by the tradesperson who does the work — TradePlanr is the app they use.
The OFTEC CD/11 is the Oil Servicing and Commissioning Report used when you service or commission an oil-fired appliance. It records the combustion readings, nozzle and pressure settings, and the efficiency of the appliance so the customer has clear evidence the work was carried out.
TradePlanr lets you enter your combustion analyser readings and service findings straight into the CD/11 on your phone, then produce a tidy PDF for the customer before you leave site. It removes the double handling of writing on a pad and typing it up later.
Each report is saved against the customer and property, building a service history you can pull up at the next annual visit or when a landlord or homeowner asks for their records.
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What it covers
- Appliance make, model, type and burner details being serviced or commissioned
- Combustion analysis readings including CO, CO2 and flue gas temperature
- Nozzle size, pump pressure and burner settings recorded during the service
- Efficiency result and confirmation the appliance is operating correctly
- Servicing tasks completed, such as filter, nozzle and electrode checks
- Any remedial work identified or carried out during the visit
- OFTEC registration number, engineer declaration and customer signature
When it's required
A CD/11 is completed when you service or commission an oil-fired appliance. Most oil boilers should be serviced annually to keep them running safely and efficiently, and the CD/11 documents the readings and settings for that visit.
The report is also used when commissioning an appliance after installation, capturing the combustion results and settings. It should be handed to the customer and retained as part of the appliance's service record.
How to issue it in TradePlanr
- 1
Enter the appliance details
Start a CD/11, add the customer and property, then record the appliance make, model, burner type and nozzle details you are working on.
- 2
Log the combustion analysis readings
Enter your combustion analyser results, including CO, CO2 and flue gas temperature, so the readings are captured accurately on the report.
- 3
Record settings and service tasks
Note the nozzle size, pump pressure, burner settings and the servicing tasks completed, along with any remedial work identified.
- 4
Sign and store the PDF
Capture the customer's signature, then generate a branded PDF that is emailed to the customer and filed against the job automatically.
Issue this certificate from your phone or the web
TradePlanr generates this and 79 other gas, electrical, oil, plumbing and renewables certificates as proper PDFs — filled on site, signed on screen and stored against the job. Works even with no signal. Free to start.
Frequently asked questions
Do I need a CD/11 every year?
Oil-fired appliances are generally serviced annually, and a CD/11 is completed at each service to document the combustion readings and settings. It is also used when commissioning an appliance after installation.
Can I complete OFTEC forms on my phone?
Yes. With TradePlanr you enter your combustion readings and service findings into the CD/11 on your phone or tablet, then email the customer a PDF before you leave site.
What readings does the CD/11 record?
The CD/11 records combustion analysis readings such as CO, CO2 and flue gas temperature, along with nozzle size, pump pressure, burner settings and the resulting efficiency.
Related certificates
Oil Installation Completion Report (CD/10)
The OFTEC CD/10 completion report for a new or replacement oil-fired installation.
Oil Landlord Safety Check (CD/12)
The OFTEC CD/12 landlord safety check for oil-fired appliances in rented homes.
Gas Service & Maintenance Record
The service and maintenance record issued when a gas appliance is serviced.
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