ESCO Air Conditioning Practice Exam 2025 - Free AC Certification Practice Questions and Study Guide

Ductless mini-split systems are specifically designed to provide heating and cooling without the need for ductwork, distinguishing them from traditional HVAC systems. These systems consist of an outdoor unit and one or more indoor units that are mounted on walls or ceilings, allowing for flexibility in installation and layout.

By eliminating the need for ductwork, ductless mini-splits can be more efficient and easier to install in homes or buildings where running ductwork is impractical or impossible. This design allows for individualized climate control in different rooms, enhancing comfort and energy efficiency.

The other options do not accurately describe ductless mini-split systems. For instance, while they can be used in small spaces, they are not limited to them; they can service larger areas with multiple indoor units. They also serve both heating and cooling functions, making the focus on heating systems only inappropriate. Additionally, the absence of ductwork is a defining characteristic, which rules out any suggestion that they require extensive ductwork.