The answer to 'ductless system or ductless system' is that there is no such thing as a 'ductless system or ductless system.' This appears to be a confusing or contradictory question. Ductless systems, also known as mini-split systems, are a type of HVAC technology that do not require the extensive ductwork of traditional central air conditioning systems. Instead, ductless systems use small indoor air-handling units connected to an outdoor compressor unit by refrigerant lines.
Ductless systems offer several benefits over ducted HVAC, including improved energy efficiency, easier installation, and greater flexibility in placement. They are often used in homes or additions that lack the space or infrastructure for ductwork. However, ductless systems may have higher upfront costs compared to central air. Homeowners should carefully consider their specific heating and cooling needs, home layout, and budget when deciding between a ductless or ducted HVAC system.