ᐅ Which heating technology is best for noise-sensitive people?

*Warning, a silly question*
I have no knowledge of heating technology, but there is one thing that is important to me: the heating system must not produce any disturbing noises (and I am easily disturbed, for example by humming, buzzing, or similar sounds). It would not be installed in the basement, but on the living floor.
Are there types of heating systems that tend to be problematic in this regard?

Tip: Make sure the door to the boiler room is properly installed and preferably does not open towards the living area.

enkidu schrieb:
Are there types of heating systems that are critical in this regard?

I would say all combustion-based systems. However, this can be managed (installing the boiler on a vibration-damping plate or bracket, soundproof door with drop seal). For heat pumps, the outdoor units are the critical points (which doesn’t mean that the indoor units are automatically quiet). It is advisable to choose a model where the outdoor unit can be freely positioned, so you can select the acoustically best location regardless of the floor plan.

With traditional radiators, you might also have flow noise, but this is not an issue with underfloor heating.

A ground-source heat pump (deep or surface), walls to the utility room made of solid sand-lime brick 17.5cm (7 inches), the screed under the heat pump decoupled for sound insulation, as well as the pipes on the wall, a door made of solid timber, and soundproof strips... these are all effective ways to reduce noise.

We have gas! On the ground floor! Only separated from the open living area by a regular door! We don’t hear anything!

Everything with a compressor hums ;-)
I can hear the heat pump (very quietly), the refrigerator, and the dishwasher.
You will never have complete silence in a house (although it is much quieter than in any apartment I have lived in so far).