F-Register
BRL 6000-25 and K25000 application
Support for CO certification for combustion appliances: BRL 6000-25, Kiwa K25000, handbook, procedures, flue gas checks and audit preparation.
CO certification / combustion appliances
Guidance for BRL 6000-25, Kiwa K25000 and the right CO handbook.
For companies working on gas combustion appliances, flue systems and combustion air supply, F-Register helps prepare CO certification. We work with Kiwa for certification and help with the handbook, procedures, measurement records and audit evidence.
Who is BRL 6000-25 or K25000 relevant for?
For installation, maintenance, repair and commissioning of gas combustion appliances and flue systems.
Kiwa K25000 can be a more compact route for smaller organisations, depending on activities and scope.
Companies combining heat pumps with boilers can keep cooling and CO records in one customer file.
Personnel certificates, permissions, measuring tools, work orders and procedures must be demonstrably available.
Our CO certification approach
- We define your scope: appliance types, activities, technicians, measuring tools and documentation.
- We set up the CO handbook with procedures, work instructions, responsibilities and safety agreements.
- We prepare records for appliances, flue systems, measurements, inspection labels and reports.
- We organise audit evidence: certificates, tools, calibration, management review and work instructions.
- The application and assessment are handled by Kiwa; we support preparation and administration setup.
- After certification, work orders, reports, photos and measurements stay linked to customer, site and appliance.
What needs to be demonstrably in place?
| Area | Practical setup in F-Register |
|---|---|
| Handbook and procedures | CO handbook, work instructions, TRA, safety procedure, management review and policy statement. |
| Competence | Technicians, certificate type, certificate number, permissions and linked activities. |
| Appliance records | Brand, type, serial number, power, fuel, open/closed appliance and maintenance contract. |
| Flue system | Flue type, material, replacement, check, handover and photos. |
| Measurements | CO, CO2, O2, gas supply pressure, burner pressure, full load/low load and combustion air checks. |
| Tools | Measuring instruments, calibration dates, reports, technician assignment and audit overview. |
| Reporting | Work order report, CO check, inspection label and appliance history. |
For hybrid companies
Heat pump and combustion appliance in one file.
Many companies work on both cooling systems and combustion appliances. F-Register keeps these domains separated where required, but connected where useful: the same customer, same site and same maintenance process.
- Link a boiler to a hybrid heat pump at the same site.
- Create work orders for boiler, heat pump or combination.
- Use separate audit documents for BRL100 and BRL 6000-25/K25000.
- Only show active modules in customer portal, planning and reports.

Important
F-Register is not a certification body. Formal assessment and certification are performed by Kiwa or another appointed certification body. We help with preparation, handbook, setup, evidence and software-based records.
Preparing CO certification?
Request a demo or intake. We will review whether BRL 6000-25 or Kiwa K25000 fits your activities, and which documents and records you need.
Request demo or intake