The Baxi 5121447 Fan is a genuine replacement combustion airflow component designed to maintain the correct supply of air into your boiler’s combustion chamber while safely expelling flue gases. By ensuring the right airflow, this fan supports reliable ignition, efficient combustion and consistent heat output. When a fan becomes worn, noisy or fails, boilers may experience ignition delays, unusual sounds or safety lockouts, so replacing it with the correct OEM-specified unit helps restore dependable and safe operation.

This fan is compatible with Baxi Duo Tec and Megaflo series boilers that reference part number 5121447 in their parts documentation. To ensure correct fitment and optimal performance, always verify the part number on your existing fan or consult your boiler’s service information before installation, as airflow components differ between models and configurations.

Supplied ready for direct replacement, the 5121447 Fan integrates with the boiler’s existing mounting points and electrical connections without modification when installed by a qualified engineer. Choosing this genuine Baxi component helps ensure proper combustion airflow, improved ignition reliability and dependable heating performance in compatible Duo Tec and Megaflo boilers.