The Worcester 87161048960 Air Pressure Switch is a genuine replacement safety device that monitors the air pressure within your boiler’s combustion and flue system. It detects correct differential pressure to confirm that the fan and flue are functioning properly before allowing ignition to proceed. If the air pressure falls outside safe parameters, the switch triggers a boiler lockout to prevent unsafe combustion conditions and protect internal components.

This air pressure switch is compatible with Worcester and Worcester Bosch 24Si and 28Si series boilers rated around 24 kW that specify part number 87161048960. To ensure correct fitment and reliable operation, always check the part number on your existing switch or consult your boiler’s documentation before installation, as air pressure switch types and settings can vary between models.

Designed for direct replacement, the 87161048960 Air Pressure Switch connects seamlessly with the existing tubing and electrical harness, integrating with the boiler’s safety control system without modification. Choosing this genuine Worcester Bosch part helps maintain accurate combustion safety monitoring and dependable boiler performance in compatible 24Si and 28Si appliances.