Quick answer
A heat pump that heats and cools rooms without ductwork.
A ductless mini-split connects an outdoor unit to one or more indoor heads via a small refrigerant line, conditioning rooms directly without ducts. It offers room-by-room zoning and high efficiency, making it ideal for additions, garages, and homes without ductwork.
Why Ductless Mini-Split matters
Equipment terms identify which part of the comfort system is doing the work and whether repair, replacement, or an upgrade is the best next step. Understanding the equipment helps you compare options without pressure.
When you'll see this term
You will usually see this term on service invoices, replacement proposals, equipment labels, and repair-or-replace discussions.
Questions to ask your technician
- Is this equipment repairable, or is replacement the better long-term value?
- How old is it, and is it still under manufacturer warranty?
- Would a different equipment type improve comfort or efficiency?
Go deeper
Ductless mini-splits explained
Related terms
- Heat Pump
- A system that heats and cools by moving heat instead of burning fuel.
- Zoning
- Dividing a home into areas with independent temperature control.
- Variable-Speed / Inverter
- Equipment that modulates output instead of just on/off.
- Refrigerant
- The fluid that carries heat through the cooling/heating cycle.