Guarantee Terms and Conditions

To receive the full benefits of the extended guarantee the following terms and conditions must be adhered to or your claim may be rejected:

  • The Benchmark log book must be completed by the installer at point of installation and retained on site by the owner/occupier for inspection during an engineer visit.
  • The boiler must be serviced annually by a registered Gas Safe Engineer in accordance with the manufacturer’s instructions.
  • Service details must be recorded in the Benchmark logbook which must be available for inspection.
  • The cost of the annual service is not included in the guarantee.
  • Only boiler component failures are covered by the guarantee.
  • If any failure is caused by contaminated water in the system the engineer visit becomes chargeable.
  • The extended guarantee applies to the boiler only, it does not apply to other system components e.g. thermostats, time clocks, motorised valves etc..
  • All installation, non boiler or external system fault calls will be charged to the home owner/occupier and could also invalidate your guarantee.
  • For calls requested to boilers within the guarantee period a refundable deposit may be required; returned in full if the diagnosed fault is covered by the boiler guarantee.
  • The guarantee must be registered within 30 days of installation.
  • Vaillant Group reserves the right to change these Terms & Conditions at anytime and its decision regarding guarantee claims is final.


Longer guarantees are available through the Advance programme, further terms are outlined below

  • The extended guarantees are available on Vaillant domestic ecoTEC boiler models only
  • The offer is not available on Vaillant commercial ecoTEC 46kW and 65kW boiler models
  • Not to be used in conjunction with any other offer, contract support or promotion from Vaillant


Please note: In order to receive an extended manufacturers guarantee, an appliance must be purchased and supplied by your chosen Vaillant Advance installer.

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