The boiler, including all controls, plate heat exchangers and associated equipment contained within the boiler casing, the burner and flue system (if supplied by Warmflow) are guaranteed against defective parts and faulty workmanship for a period of 12 months from the date of manufacture, providing the boiler is installed and commissioned in accordance with the installation instructions supplied with the boiler. The water jacket and thermal store (in the case of a combination boiler) are guaranteed for a total of 5 years from the date of manufacture (excluding burner, labour, handling and shipping)

Terms & Conditions of Warranty

This guarantee is subject to the following conditions being complied with:

  • The guarantee registration form is fully completed and returned to Warmflow within 30 days from the date of installation, or 90 days from the date code stamped on the appliance label.
    You can also register your guarantee online.
  • The boiler must be installed and commissioned by a Warmflow or other competent engineer, who is OFTEC registered. Commissioning of the boiler must be completed immediately after the boiler is installed.

    In Great Britain, the period of guarantee will be increased to 24 months providing that the above conditions are satisfied and that:
  • The boiler is serviced by a Warmflow or other OFTEC registered, competent engineer, 12 months after the date of installation and thereafter at 12 monthly intervals.

    NOTE: In Northern Ireland and the Republic of Ireland the period of guarantee can only be increased to 24 months through the purchase of an extended warranty.
  • The product must be installed, commissioned and serviced in accordance with the installation instructions supplied.
  • Warmflow will accept no liability for the cost of repairs resulting from incorrect installation, failure to commission, inadequate commissioning, lack of regular maintenance, misuse, incorrect operation, tampering or repair by unqualified persons. Warmflow reserves the right to repair or replace components within the guarantee period at a time and location that is most convenient to the company.
  • All sub-contracted repairs must be authorised in writing by Warmflow prior to any work being carried out. Unauthorised claims are not covered by the guarantee.
  • If the product has not been installed within 3 months from the date of dispatch from Warmflow, then the warranty will deem to have started.
  • Claims for consequential loss or damage are not covered by these guarantees.
  • The statutory rights of the customer are not affected by the guarantee.
  • For all other warranty information please refer to the product manual. If you do not have your manual it can be accessed or downloaded from our website.

In the event of a breakdown please contact your commissioning engineer who should then contact our service department whilst at your home, to report the fault.


All other Warmflow products come with a standard manufacturer's guarantee of 12 months from the date of manufacture.