What is an advantage of a vertical tubeless firetube boiler?

A vertical tubeless firetube boiler is designed to take up significantly less floor space compared to traditional firetube boilers. This compact design makes it suitable for installations where space is limited, such as in small commercial buildings or plants. The vertical orientation allows for a smaller footprint while still providing efficient heat exchange and steam generation capabilities.

In addition to saving space, vertical tubeless firetube boilers can also often be more straightforward to install and maintain, given their design. This can lead to further efficiencies regarding time and cost in both installation and ongoing operational management.

The other options describe characteristics that may not apply specifically or exclusively to vertical tubeless firetube boilers. For instance, while they may require less fuel in some cases, this is not a primary design advantage specific to this type of boiler. Similarly, fuel handling equipment or water treatment requirements depend more on the specific setup and operational parameters rather than the boiler type itself.