The Baxi 5137530 Air Pressure Switch is a genuine replacement safety device that monitors the air pressure within your boiler’s combustion and flue system. It ensures that the fan is creating the correct airflow before allowing the ignition sequence to proceed. If the air pressure falls outside safe operating limits, the switch triggers a boiler lockout to protect internal components and prevent unsafe combustion conditions, making it essential for dependable, safe boiler operation.

This air pressure switch is compatible with Baxi boilers that specify part number 5137530 in their parts documentation. To ensure correct fitment and reliable performance, always verify the number on your existing switch or consult your boiler’s service information before installation, as air pressure switch specifications and mounting formats can vary between models.

Supplied ready for direct replacement, the 5137530 Air Pressure Switch connects with the boiler’s existing tubing and electrical harness without modification when installed by a qualified engineer. Choosing this genuine Baxi component helps restore accurate airflow monitoring and supports safe, efficient operation in compatible boilers.