Buying Guide

Mini Split Buying Guide: Single Zone vs Multi-Zone Ductless AC

By Leo, LC Heating & Air · Updated May 13, 2026

⚡ Quick Answer

Ductless mini splits are perfect for room additions, converted garages, or older homes without ductwork. A single-zone system costs $3,500–$5,500 installed, while a multi-zone system (2-4 rooms) runs $8,000–$18,000. Daikin and Mitsubishi are the top brands, offering whisper-quiet operation and SEER2 ratings over 20.

What Is a Ductless Mini Split?

A mini split has two main components: an outdoor compressor and one or more indoor air handling units connected by a small conduit. Because they don't use ducts, they avoid the 20-30% energy loss associated with ductwork, making them incredibly efficient.

Single-Zone vs Multi-Zone

  • Single-Zone: One outdoor unit connected to one indoor unit. Best for a single room, garage conversion, or ADU.
  • Multi-Zone: One outdoor unit connected to up to 8 indoor units. Best for cooling an entire home without ducts. Each indoor unit has its own thermostat for precise temperature control (zoning).

Types of Indoor Units

You aren't limited to just the rectangular box on the wall:

  • Wall-Mounted: Most common, most affordable. Mounts high on a wall.
  • Ceiling Cassette: Recesses into the ceiling so only the flush grille is visible. Blows air in 4 directions. Requires ceiling clearance.
  • Floor-Mounted: Rests near the floor like a radiator. Great for rooms with low ceilings or large windows.
  • Concealed Ducted: A hybrid unit hidden in a ceiling or closet that uses very short duct runs to serve 1-2 rooms.

Mini Split Types Comparison

TypeBest ForAestheticsRelative Cost
Wall-MountedMost rooms, budgetVisible on wall$
Floor-MountedLow ceilings, sunroomsVisible near floor$$
Ceiling CassetteOpen floor plans, aestheticsFlush with ceiling$$$
Concealed DuctedMulti-room suitesHidden$$$$

Frequently Asked Questions

How much does a mini split cost in Los Angeles?
A standard single-zone wall-mounted mini split costs $3,500–$5,500 fully installed. Multi-zone systems start around $8,000 for two zones and increase based on the number and type of indoor units.
Are mini splits noisy?
No, they are whisper-quiet. The loud compressor is outside, and the indoor units operate at 19-26 decibels — quieter than a whisper or a library.
Can a mini split heat my home too?
Yes. Almost all modern mini splits are heat pumps, meaning they provide both high-efficiency air conditioning in the summer and heating in the winter.

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