First time Heating Combi boiler

I have a combi boiler in my 5 year old new build.

It is situated in the utility room so I do not hear it at all. It does not go on and off every few minutes - it only comes on when I turn a tap/shower on. If I turn up the thre3mostat for the central heating it is on a lot more, but I do not hear it at all. I hear the pump that circulates the water to the radiators - is this what you are hearing?

I would go back to the installers and ask them to talk you through what is happening, what the principles of the combi boiler are, and what your settings should be for max efficiency and min noise.

Thank you for replies.
The fitter bled the system twice on Saturday when he was here.
We turned off the Eco feature but it still comes on every quarter of an hour or so.

We have a Worcester combi boiler. It has an ECO feature which makes the boiler turn on quite regularly so your water would be hotter more quickly, when you turn on the tap.
Look at your instructions manual and turn this feature off, see if this makes it quieter.

You also need to take air out of this new system from time to time, it is called bleeding and is easily done with the small key, holding a flannel underneath. You can hear air hissing out and then the liquid comes, when you need to tighten that valve again. They are at the top side of the radiators

The master rad will usually be in the bathroom or en suite and that is what I bleed first

Your boiler is cycling too often. You need to alter the return temperature. Anyone can do that, mine is now on 58 and was set at 70 by the installer

I have a tank in mine, ariston, which can hold water at a hot temperature for an instant stream of hot water at the tap. I turned that off, also easy to find that push control. My hot water now comes on demand