Noisy combi boiler

[Haggis1969]

I’ve just had a new combi boiler fitted and it is making a loud noise every 15-30 mins. It sounds like a plane taking off. The heating is off and I’m not using any water at the time. It is a Worcester Bosch greenstar 8000 Life. I’ve never had a combi boiler before but don’t think this is normal.

 

[DP]

It is firing to preheat a small quantity of hot water. Plane like noise is the fan that runs at different speed. Some boilers a deathly quite, others would wake the dead

 

[Haggis1969]

It sounds more like a toilet cistern refilling rather than a fan. I was told this boiler was meant to be very quiet. It’s doing it every 15 mins now.

 

[martyndc88]

That's not normal for the boiler you have, get your installer back or get Worcester out

 

[ianmcd]

Your boiler is still under warranty, just call them out