This fan is for the Johnson and Starley J40 warm air boiler, a bulletproof-reliable warm air boiler from the 90’s and 2000’s with tens of thousands still in use. Unfortunately the most common failure is the air circulation fan which I see Johnson and Starley have recently discontinued (June 2026).
These fans are however easily repaired by refurbishing and fitting a new motor which gives the whole boiler a new lease of life. Let me know if the fan in yours has failed and you’ve been told a whole new boiler needs fitting. This isn’t necessarily wholly correct and I can possibly help.
Call or send me a text on 07866 766364 for more information.
Mike
(11/6/26)
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Copyright Michael Bryant 2026
Site first published 14th February 2019
Last updated Saturday 11th July 2026
Call or text me on 07866 766364
Gas Safe Register No 197499
CIPHE Registration No 56207