Worcester Manuals & User Guides

Worcester, part of the Bosch Group, is a renowned manufacturer of heating and hot water solutions, dedicated to providing comfort and reliability for over 50 years. Known for their 'Greenstar' range of gas and oil-fired condensing boilers, Worcester products are engineered for exceptional energy efficiency and longevity. The brand's portfolio includes combination (combi), system, and regular boilers, as well as renewable technologies such as heat pumps and solar water heating systems.

Committed to strict quality control standards, Worcester Bosch products are designed to offer economical running costs and ease of use. The company provides comprehensive support through its customer service teams and authorized engineers, ensuring that every appliance—from Heat Interface Units to domestic boilers—operates at peak performance throughout its lifetime.

• How often should I service my Worcester boiler?

  It is recommended to service your Worcester boiler annually by a competent, qualified engineer (such as an OFTEC or Gas Safe registered engineer) to ensure safety, reliability, and efficiency.

• Where can I find the serial number on my Worcester appliance?

  The data label containing the model and serial number is typically located on the inside of the boiler on the condensate trap bracket or centrally on the bottom of the appliance in line with the control panel.

• How do I top up the pressure on my Worcester heating system?

  Refer to the 'Prepare for operation' or 'Topping up the system pressure' section of your user manual. For many Greenstar models, this involves using the filling link or the specific Greenstar Intelligent Filling System accessory.

• What fuel type do Worcester Danesmoor and Heatslave boilers use?

  The Greenstar Danesmoor and Heatslave II oil-fired boilers are designed for use with Kerosene (Class C2) only.