A ductless mini split is a heat pump without the ducts: an outdoor unit connects by a slim refrigerant line to one or more indoor wall or ceiling units, each conditioning its own zone. No ductwork means no duct losses — which is why they excel in homes, cabins, and additions that never had ducts to begin with.
- Heats and cools, zone by zone, with individual room control.
- No ducts = no duct losses — efficiency stays where you paid for it.
- The Valley fit: cabins, additions, shops, older homes, and rooms the main system never reached.
- Chelan PUD pays first-time ductless conversion rebates ($1,600 site-built / $2,000 manufactured homes).
How the pieces fit together
One outdoor compressor unit serves one indoor head (single-zone) or several (multi-zone), connected by refrigerant lines through a three-inch wall opening. Each head has its own thermostat, so the bedroom can sit cooler than the living room, and unused zones can idle. The technology inside is the same inverter-driven heat pump loop as ducted systems — compressor, coils, refrigerant, reversing valve — minus the ductwork and its losses.
Where ductless wins in this valley
The classic Valley candidates: Leavenworth and Plain cabins and vacation homes with no ducts and a need for both winter heat and summer cooling; additions and bonus rooms the original system can't reach; shops and garages; older homes where retrofitting ducts would mean tearing into finished spaces; and homes replacing electric baseboards — which is exactly the conversion Chelan PUD's ductless rebate targets ($1,600 for site-built homes, $2,000 for manufactured homes, per the 2026–27 program).
What ductless asks of you
Honest trade-offs: wall units are visible — sleek, but present; each head's filter needs regular cleaning (weeks, not months, in dust season); multi-zone systems need thoughtful head placement to avoid short-cycling in small rooms; and whole-house multi-zone builds can cost as much as ducted systems when a home already has good ducts. Ductless is a precision tool, not a universal answer — the same load-calculation discipline applies.
Key terms
The vocabulary you'll hear on estimates and service calls — defined in plain language in our glossary.
Where it goes wrong
Dirty head filters
Every indoor head carries its own washable filter, and Valley dust loads them fast. A clogged head loses capacity, drips condensate, and strains the system. The fix is a rinse — the habit is remembering it exists.
The oversized single head
One big head in a small room reaches setpoint instantly and short-cycles all day. Zone sizing matters just as much at small scale — heads are sized to rooms the same way systems are sized to houses.
How we build this guidance
- Written from real service and install work across the Wenatchee Valley — the orchard-dust, hydro-rate, dual-peak-climate conditions in this guide are the ones our techs work in daily.
- Rebate figures reflect published utility program terms at the date below and are re-verified on every estimate — programs change annually.
- No invented pricing: dollar figures appear only where a program publishes them.
Last updated: 2026-07-03 · Central Washington Heating and Air, licensed & insured (LIC# CENTRWH742JN)
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