ᐅ What are the legal requirements for a utility room housing an air-to-water heat pump?

In my opinion, the general requirements have always included the following statement:

Utility rooms must have ventilation to the outside, except for rooms that contain only electrical and telecommunications connections.

ahh, I found something under 5.1: Quote:

"Connection and operational equipment must be protected against mechanical damage, tampering, and unauthorized access; they should be installed in dry rooms that can be ventilated, for example to prevent condensation."

although "ventilated" is not exactly defined here. An open door is also "ventilated."

Since we have a gas boiler, the following also applies: (TE has an air-to-water heat pump, so this does not apply to him):

"If there are fireplaces in the room, the ventilation and combustion air supply for the installation room must comply with the requirements of DVGW G 600 as well as the heating regulations (FeuV) of the respective federal state."

so I have to keep looking there. However, I suspect that a condensing boiler with its room-air-independent burner and its own supply air in the annular gap of the flue pipe does not need to meet any further requirements.

It is also covered under section 1.

For single-family and two-family houses, separate utility rooms are not required; however, the regulations concerning the connections of the lines must be applied accordingly.

DVGW G 600 is probably best not to start reading at all. It contains things like ventilation systems and gas boilers in the same room requiring special fire protection for the ventilation system, and much more. So it seems to me: if there is a ventilation option, everything is fine; if not, it’s not the end of the world either.