Ductless Mini-Splits
A mini-split is a heat pump without ducts: one outdoor unit feeds one or more indoor heads through a refrigerant line set. That makes it the usual answer for additions, finished attics, garages, older homes with radiators, and any room the central system never keeps comfortable.
7 guides · newest update Nov 13, 2026 · how we research
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- Step 1Ductless Mini Split Installation Cost 2026: What Installation Really CostsMini split installation cost in 2026: installed prices by zone count, BTU size and unit style, plus labor, permits, brand bands and Canada pricing.Updated Oct 10, 2026
- Step 2Mini-Split Running Cost: What a Ductless Heat Pump Costs to Run per MonthA 2-ton mini-split costs about $130 to $250 a month to heat and $40 to $95 to cool at 18.16 cents/kWh. State and Canadian prices, worked math.Updated Nov 13, 2026
- Step 3Ductless Mini-Split Layout: Where Each Indoor Head GoesLay out a ductless mini-split room by room: put each head where it throws air down the room's long axis, not at a bed or sofa, with a drain that falls.Updated Nov 13, 2026
All mini-splits guides
- Mini-Split Maintenance and Cleaning: What to Do Yourself, What a Pro Does, and What It CostsRinse mini-split filters every 2 weeks in heavy use; book a pro clean yearly or every few seasons ($100 to $550). DIY steps, warranty rules, checklist.Updated Nov 13, 2026
- How to Organize a Ductless Mini-Split System: Zones, Head Count, and ControlsOrganize a ductless mini-split by zones: which rooms share a head, how many heads you need, multi-zone vs single-zone outdoor units, and how to control them. Worked four-zone example included.Updated Nov 13, 2026
- Mini-Split Condensate Drain 2026Choose and commission a ductless mini-split gravity drain or condensate pump by product instructions, continuous slope, lift and run limits, termination, insulation, cleanout access, overflow shutdown, noise, freeze risk, maintenance, and water-damage consequence.Updated Jul 19, 2026
- Mini-Split Aesthetics Guide 2026The 'White Wart' on the wall is the 1 reason homeowners reject heat pumps. But Ceiling Cassettes and Concealed Ducted units make mini-splits invisible.Updated Jan 12, 2026
About this topic
Ductless Heating and Cooling, Room by Room
A mini-split is a heat pump without ducts: one outdoor unit feeds one or more indoor heads through a refrigerant line set. That makes it the usual answer for additions, finished attics, garages, older homes with radiators, and any room the central system never keeps comfortable.
What Decides the Price
The equipment is only part of a quote. The number of indoor heads, the length and route of the line set, condensate drainage, the electrical circuit and any wall or ceiling work drive most of the difference between two bids. Our installation cost guide breaks those lines out so quotes can be compared item by item.
What Decides the Comfort
Head placement, sizing per room and the drain path matter more than brand. A head sized for the whole floor in one room short-cycles; one placed where furniture blocks its airflow never reaches the far wall. The placement, condensate and maintenance guides below cover the decisions an installer will not always explain.
Running It Well
Monthly running cost depends on your electricity rate, climate and how the system is set. Filters that are never cleaned and coils that are never washed are the most common reasons a mini-split loses output after a few years.
Start with the cost guide, then read placement and running cost before you sign a quote. Rebates for mini-splits are covered in the heat pump rebate guides and the rebates by region section.