This replacement fan is a genuine Vokera spare for use in Mynute HE, Procombi, Unica, Verve, Easi-Heat Plus, Mynute VHE and Linea boilers. The fan introduces fresh air into a boiler's combustion chamber, ensuring that gas is burnt correctly and extracting burnt gas at the end of the combustion process. Your boiler's safety parameters ensure that no gas passes through to the main burner if the fan is not functioning correctly.