The best 4-zone mini splits of 2026

Two things to settle before you shop. First, count the zones honestly - a zone is a room with a door, not a floor. Second, note that outdoor capacity is not the sum of the heads you can hang off it; most 4-zone condensers are deliberately undersized against their maximum head count on the assumption you will not run all four flat out at once. Size with the sizing calculator, room by room.

The $1,960 question inside one brand

ACiQ sells two 4-zone 36,000 BTU condensers, and the gap between them is the clearest illustration of what you are actually buying at this size.

The ACiQ Multi-Zone Extreme Series 36k 230V is $4,459.99: SEER2 23, HSPF2 10.7, rated to -22F. The ACiQ Multi-Zone Standard Series 36k 230V is $2,499.99: SEER2 24, HSPF2 9.5, rated to -13F.

Read that carefully. The cheaper one cools slightly better. What the extra $1,960 buys is winter: a full point of heating efficiency and nine degrees of additional low-ambient capability.

So the choice is not "good and better", it is a straight question about your climate. If the system is mostly cooling, the Standard is the better buy and it is cheaper. If it is carrying heat through a northern winter across four rooms, the Extreme earns the difference and the -13F floor on the Standard would hand back to your backup heat on the coldest nights.

Best head flexibility: GREE Free Match 4-zone

The GREE Free Match 28.4k 230V is $3,662 at HVACDirect, certified at 28,400 BTU (sold as 30k), SEER2 21, HSPF2 10, and rated to -22F.

Its advantage is one that only matters on multi-zone: we have verified 24 compatible indoor heads for it, the widest list of the three. Four-zone projects rarely want four identical wall units - a bedroom wants quiet, a living room wants capacity, a basement may want a floor console or a slim duct - and the size of the compatible-head list is what decides whether you can build the system you actually want. ACiQ is close behind at 22; the LG is the one that constrains you, at 15.

LG Multi F LGRED 4-zone

The LG Multi F LGRED R-32 28.4k 230V is $3,703, also certified at 28,400 BTU, SEER2 20, HSPF2 9.8, rated to -13F. We track 15 compatible heads for it.

On the numbers it is behind the GREE at a very similar price, so take it if you have a reason to want LG specifically rather than as the default.

Read the warranty terms before you buy either of those

Both the GREE and the LG carry a purchase-channel warranty condition, and at these prices it is worth ten minutes.

LG's limited warranty is void if the system was purchased online from a source not expressly authorized by LG. We cannot confirm from LG's published material whether any particular online retailer holds that authorization - so if you are buying an LG online, ask LG directly whether that seller is authorized, and get the answer before you pay.

GREE publishes an online warranty-claim path for equipment bought online or at major retailers, but claims require a contractor's on-site diagnosis and documentation. Keep the purchase receipt and the installation invoice.

The ACiQ systems carry no such published condition. Full detail by brand is in does buying online void your warranty.

Head flexibility, compared

If two of your four rooms need something other than a wall unit, this is the number that decides whether the system fits the house:

Each of those is sourced from the manufacturer's own compatibility chart, not a retailer's listing - retailers routinely list heads that fit a product family rather than the specific condenser, and a wrong pairing produces a system that will not commission.

One honest exclusion: ACiQ's SCC-0612-HH-MB cassette is adjustable between 6,000 and 12,000 BTU, so it is absent from the count above. We store a single certified capacity per head, and a range cannot be stored as one - it would make the combination arithmetic wrong.

How to choose

• Climate decides the ACiQ tier, and it is a $1,960 decision. Cooling-led, take the Standard. Heating-led, take the Extreme.
• Head variety decides whether the system fits the house. If two of your four rooms need something other than a wall unit, start from the compatible-head list, not the condenser.
• Certified capacity, not the badge. Both the GREE and LG sold as "30k" certify at 28,400 BTU.
• Installation dominates the cost at this size. Four heads means four line sets, four penetrations and four drains - see the installation cost estimator before budgeting from the equipment price.

Prices above are the last figures we verified and carry their check dates on each model page. They move.

Sources

• ACiQ: ACiQ ACIQ-36Z-HH-M5C non-ducted multi-zone submittal - ACiQ Multi-Zone Extreme Series 4-Zone 36,000 BTU R-454B 208/230V (ACIQ-36Z-HH-M5C), retrieved Jul 29, 2026.
• ACiQ: ACiQ Multi-Zone Extreme Series official category - ACiQ Multi-Zone Extreme Series 4-Zone 36,000 BTU R-454B 208/230V (ACIQ-36Z-HH-M5C), retrieved Jul 29, 2026.
• Air-Conditioning, Heating, and Refrigeration Institute: AHRI Appendix M1 public detail for ACIQ-36Z-HH-M5C - ACiQ Multi-Zone Extreme Series 4-Zone 36,000 BTU R-454B 208/230V (ACIQ-36Z-HH-M5C), retrieved Jul 29, 2026.
• ENERGY STAR: ENERGY STAR exact row check for AHRI 215735288 - ACiQ Multi-Zone Extreme Series 4-Zone 36,000 BTU R-454B 208/230V (ACIQ-36Z-HH-M5C), retrieved Jul 29, 2026.
• HVACDirect: HVACDirect exact condenser listing for ACIQ-36Z-HH-M5C - ACiQ Multi-Zone Extreme Series 4-Zone 36,000 BTU R-454B 208/230V (ACIQ-36Z-HH-M5C), retrieved Jul 29, 2026.
• ACiQ: ACiQ ES-36Z-M5C non-ducted multi-zone submittal - ACiQ Multi-Zone Standard Series 4-Zone 36,000 BTU R-454B 208/230V (ES-36Z-M5C), retrieved Jul 29, 2026.
• ACiQ: ACiQ Multi-Zone Standard Series official category - ACiQ Multi-Zone Standard Series 4-Zone 36,000 BTU R-454B 208/230V (ES-36Z-M5C), retrieved Jul 29, 2026.
• Air-Conditioning, Heating, and Refrigeration Institute: AHRI Appendix M1 public detail for ES-36Z-M5C - ACiQ Multi-Zone Standard Series 4-Zone 36,000 BTU R-454B 208/230V (ES-36Z-M5C), retrieved Jul 29, 2026.
• ENERGY STAR: ENERGY STAR exact row check for AHRI 215735288 - ACiQ Multi-Zone Standard Series 4-Zone 36,000 BTU R-454B 208/230V (ES-36Z-M5C), retrieved Jul 29, 2026.
• HVACDirect: HVACDirect exact condenser listing for ES-36Z-M5C - ACiQ Multi-Zone Standard Series 4-Zone 36,000 BTU R-454B 208/230V (ES-36Z-M5C), retrieved Jul 29, 2026.
• Air-Conditioning, Heating, and Refrigeration Institute: AHRI public detail 215218915 - GREE Free Match 4-Zone 30,000 BTU R-32 208/230V (MUL30HP230V1R32AO), retrieved Jul 28, 2026.
• GREE Comfort: GREE DFS warranty statement for units installed after 2021-12-31 - GREE Free Match 4-Zone 30,000 BTU R-32 208/230V (MUL30HP230V1R32AO), retrieved Jul 28, 2026.