True or False: Central domestic hot water systems are typically located at the highest floors of a building.

The correct choice is based on the understanding of building layout and plumbing design principles. Central domestic hot water systems are typically installed in locations that allow for efficient distribution of hot water throughout the building while also considering ease of access for maintenance. In many cases, this means that these systems are installed in basements or utility rooms closer to the main water supply and pressure sources, rather than on the highest floors.

By placing these systems at lower levels, it allows for better pressure management within the plumbing system, ensuring that hot water can effectively reach all parts of the building without excessive energy consumption or delays. Additionally, keeping these systems lower helps minimize the risk of issues such as temperature stratification and ensures smoother operation of pumping systems which may need to move water vertically to higher floors.

This understanding clarifies that the statement about central domestic hot water systems being located at the highest floors of a building is inaccurate. Thus, the answer is indeed false.