The Worcester 87172044100 Fan is a genuine replacement combustion fan designed to maintain correct airflow through the boiler’s burner and flue system. By drawing in combustion air and pushing exhaust gases safely out of the appliance, the fan supports reliable ignition, stable flame performance and efficient heat transfer. When a fan becomes weak or fails, symptoms can include noisy operation, delayed ignition or boiler lockouts, so fitting the correct replacement is essential for safe and dependable running.

This fan is typically used in Worcester Bosch Greenstar appliances, including models around the Greenstar 24 and 28 platform that reference part number 87172044100 in their documentation. Always check the part number on the existing fan or confirm against the boiler’s data label before installation, as fan assemblies are model-specific and airflow ratings vary.

Engineered for direct fitment, the 87172044100 Fan connects to existing brackets and wiring without modification, making it straightforward for a qualified engineer to install. Choosing this genuine Worcester Bosch part helps restore proper combustion airflow, optimises ignition performance and supports ongoing reliability in compatible boilers.