Herz biomass boilers are built for a long working life and operation and if maintained correctly will deliver years of reliable service. 
All Herz boilers are covered by a warranty of 5 years/ 15,000 run hours on the boiler body, and 2 years or 6,000 run hours for electrical and combustion elements giving you complete piece of mind. Extended warranties are available upon request.
A Herz certificate of guarantee is issued within the Operations and Maintenance Manual provided at post commissioning and during client training.
All parts are covered if your appliance does require repair however to keep your boiler performing efficiently and to ensure your warranty remains valid, you must ensure:
  • Equipment is installed and commissioned by Herz Biomass UK certified engineers
  • Equipment is operated and maintained in accordance with manufacturer’s recommendations and serviced by a Herz Biomass UK certified service engineer after 12 months of operation or every 3,000 run hours.
  • Genuine Herz spare parts only must be used
  • Only fuel specified by the boiler manufacturer is used
For comprehensive details about the warranties on our products, including conditions and exclusions, please contact us.