Yes of course if you’d rather your kitchen boiler wasn’t on show installing a boiler in the kitchen cupboard is a good idea as you can hide it away within the kitchen cupboard. Also as well as ensuring your boiler is installed away out of sight, usually the cupboard can help to make any noise less intrusive.
Its always important when installing a kitchen boiler in a cupboard, to consider the size of the boiler and how large the cupboard would need to be as it may be that it’s too large for any storage space that’s currently in your kitchen and may require a specially built unit or cabinet in order for the new boiler to be fitted.
That’s why there are boilers that have been designed to fit in kitchen cupboards as they are small enough to fit in a standard kitchen cupboard, such as the Worcester Bosch 25Si making these a great option if getting a completely new boiler installation and not just moving your current boiler.
You also need to consider access for future boiler services
and potential repairs of the boiler. Its always best to discuss this with the registered Gas Safe engineer who comes to fit your new boiler.