Ductless Mini-Split vs Central AC for Older Homes
Ductless mini-splits and central air both cool homes, but older properties can make the “best” choice look very different. Homes built before modern insulation standards, with leaky ducts—or without ducts at all—often benefit from systems designed for room-by-room comfort.
Below, we compare the two options with an older-home lens: retrofit feasibility, efficiency, comfort, and the tradeoffs homeowners typically weigh before signing a contract.
1) Retrofit reality: ducts (or the lack of them)
Central AC relies on ductwork to move conditioned air throughout the house. In older homes, ducts may be undersized, poorly sealed, routed through unconditioned spaces, or simply not present in the way a new system would need. Fixing or replacing ducts can quickly erase the “lower system price” gap.
Ductless mini-splits avoid most of that. They use an outdoor unit c ... Read more »

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