The Baxi 5121447 Fan is a genuine replacement combustion airflow component designed to maintain correct air movement through the boiler’s combustion chamber and flue system. This fan draws in fresh air required for efficient combustion and expels flue gases safely to the outside, supporting stable ignition and dependable heat output. A failing fan can lead to ignition difficulties, unusual noises or boiler lockouts, so replacing it with the correct OEM-specified unit helps restore safe, reliable operation.

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

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 consistent heating performance in compatible Duo-Tec and Megaflo boilers.