4 Best 24,000 BTU Multi-Zone Mini-Split Systems of 2026
We compared four 24,000 BTU multi-zone mini split heat pumps on head layout, efficiency, controls, installation and warranty.
By Daniel Brooks
Updated October 20, 2026
A 24,000 BTU multi-zone mini split is a 2 ton outdoor unit that drives two or three indoor heads, a good fit for two medium bedrooms or a small three-room layout. Our list of the best 24,000 BTU multi-zone mini-split systems compares four complete systems on head layout, efficiency, controls, installation and warranty. To browse every model we cover, visit our Multi-Zone Mini-Split Air Conditioners page.
Fewer brands sell complete kits at exactly this size, so we kept the list to four systems that state 24,000 BTU in the listing.
All Products Compared
| Product | Best For | Zones | Capacity | Efficiency | Heating |
|---|---|---|---|---|---|
| TOSOT Cosmo 24,000 BTU 2 Zone Mini Split | Overall | 2 (12K each) | 24,000 BTU | 21 SEER2 | Heat pump |
| YITAHOME 24K BTU 3 Zone Mini Split | Three rooms | 3 (9000 x 2 + 12000 BTU) | 24K BTU | 23 SEER2 | 5F to 118F range |
| Daikin 24,000 BTU Dual Zone Mini Split | Premium | 2 (9,000 + 18,000 BTU) | 24,000 BTU | 21 SEER2, 10 HSPF2 | 5F to 59.9F heating |
| Gree Multi21+ 24,000 BTU Dual-Zone Mini Split | Contractor installs | 2 (9 + 12) | 24,000 BTU | 21 SEER | Heat pump |
| Award | Product | WikiCooling Score About WikiCooling ScoreThe WikiCooling Score is our own rating from 0 to 10, based on the criteria described on our How We Review page. It reflects research, not laboratory measurement, and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Overall |
TOSOT Cosmo 24,000 BTU 2 Zone Mini Split
|
7.5/10 | Buy |
| Best Budget |
YITAHOME 24K BTU 3 Zone Mini Split
|
6.5/10 | Buy |
| Best Premium |
Daikin 24,000 BTU Dual Zone Mini Split
|
7.0/10 | Buy |
| Best Value |
Gree Multi21+ 24,000 BTU Dual-Zone Mini Split
|
Buy |
TOSOT Cosmo 24,000 BTU 2 Zone Mini Split
Tosot 24,000 BTU Dual-Zone Mini Split AC/ Heat Pump 21 SEER2, 230-Volt Wifi Ductless Inverter Split System 12K+12K BTU 2-Tons TST-MZ-M24-D1212
YITAHOME 24K BTU 3 Zone Mini Split
Energy Efficient Cooling & Heating: The tri zone mini split air conditioner is equipped with a high-power compressor and heat pump; Innovative inverter technology ensures optimal performance with 25% energy savings; Covers 1350 square feet, ideal for bedrooms, living rooms, garages, RVs, basements, commercial applications, and more; Our mini split AC is ETL and AHRI certified, guaranteeing reliability and energy efficiency Five Modes: YITAHOME 24k btu 3 zone mini split air conditioner and heater units offer five modes (auto/cool/dry/heat/fan); WiFi-enabled and Alexa-compatible; Automatic defrosting, iFEEL mode, 24-hour timer, sleep mode, energy-saving mode, swing mode, Off-screen button, etc Silent Performance: The multi zone ductless air conditioner operates quietly, creating minimal noise during operation; The remote control allows you to set the temperature between 60°F and 90°F; With noise levels below 42 decibels, you can enjoy a tranquil and undisturbed environment while benefiting from the efficient cooling and heating capabilities of our system
Daikin 24,000 BTU Dual Zone Mini Split
Daikin, a global leader in HVAC innovation for over 90 years, offers some of the most advanced and aesthetically designed air conditioning and heating systems on the market. The Daikin Multi-Split Heat Pump Air Conditioner features the 3MXM-A Series R32 pre-charged outdoor condenser and (2) FTXV Series wall-mounted indoor fan coils, delivering exceptional energy efficiency with a 21 SEER2 rating, making it ideal for multi-zone applications. This WiFi-enabled system works exclusively with the Daikin One Home app, allowing for convenient remote control and monitoring. It offers multiple modes such as Auto, Cool, Dry, Heat, and Fan Only, along with timer settings and adjustable airflow for personalized comfort. The eco-friendly R32 refrigerant reduces power consumption and minimizes environmental impact, while ECONO Operation, Powerful Operation Mode, and quiet operation ensure optimal efficiency and comfort. The package includes all necessary components for installation, Maxwell installation kit, communication cables, and an outdoor wall bracket, ensuring a hassle-free setup. 12-year warranty is included, must be installed by a HVAC certified technician.
Gree Multi21+ 24,000 BTU Dual-Zone Mini Split
Required, but not included: 1/4" x 3/8" line set (x2) | The Gree Multi21+ Dual-Zone LIVO 24,000 BTU System is powered by Grees G10 inverter-driven compressor and eco-friendly R410A refrigerant. These units can heat and cool 2 zones without distribution boxes. Our G10 inverter technology saves energy, reduces outdoor noise and keeps room temperature steady by eliminating the harsh starts & stops of conventional systems. The Multi21+ LIVO Wall Mount Ductless has a compact design, for quiet comfort and attractive appearance.
Top 3 24,000 BTU Multi-Zone Mini-Split Systems Reviewed
#1 TOSOT Cosmo 24,000 BTU 2 Zone Mini Split: Best Overall
Why We Picked It
The TOSOT Cosmo 24,000 BTU 2 Zone is our top 2 ton multi-zone system. Two 12K BTU heads cover two medium rooms, it is ENERGY STAR certified with 21 SEER2, and it has a 3.8 average from 23 ratings across the Cosmo dual-zone line.
The TOSOT Cosmo 24,000 BTU system is a dual-zone heat pump with two 12K BTU indoor units, rated 21 SEER2 and listed as a 2-ton, 230-volt Wi-Fi inverter split system. It shares the Cosmo platform with TOSOT’s other multi-zone kits, which brings Gree+ app control, voice support through Google Assistant and Alexa, and ENERGY STAR certification. TOSOT is part of the Gree family, one of the largest air conditioner manufacturers, which helps with parts and service. It has a 3.8 average from 23 ratings.
Key Specifications
- Total Capacity: 24,000 BTU (2 tons)
- Indoor Units: 2 x 12K BTU
- Efficiency: 21 SEER2, ENERGY STAR
- Power: 230V
- Refrigerant: R-32
- Controls: Gree+ app, voice
| Pros | Cons |
|---|---|
|
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Things to Consider
The listing gives few details beyond the core specs, so check the Cosmo series documentation for line-set length and warranty before you order.
Best For
This system is best for two medium bedrooms or a bedroom and an office.
Check the current price and availability of the TOSOT Cosmo 24,000 BTU 2 Zone Mini Split on Amazon.
#2 YITAHOME 24K BTU 3 Zone Mini Split: Best for Three Rooms
Why We Picked It
YITAHOME’s 24K BTU 3 Zone splits the same capacity three ways, two 9000 BTU heads and one 12000 BTU head, for up to 1350 square feet. It is rated 23 SEER2 and works with Wi-Fi and Alexa.
YITAHOME’s tri-zone system runs two 9000 BTU heads and one 12000 BTU head from a 24K BTU pre-charged outdoor unit, covering 1350 square feet. It is rated 23 SEER2, ETL and AHRI certified, and works with Wi-Fi and Alexa. Five modes, automatic defrost, iFEEL, a 24-hour timer, sleep and energy-saving modes are included, and the heads stay below 42 decibels. The system works in outdoor temperatures from 5F to 118F, and its airflow reaches up to 50 feet with 4D circulation.
Key Specifications
- Total Capacity: 24K BTU
- Indoor Units: 9000 x 2 + 12000 BTU
- Efficiency: 23 SEER2
- Coverage: 1350 sq ft
- Operating Range: 5F to 118F
- Controls: Remote, Wi-Fi, Alexa
| Pros | Cons |
|---|---|
|
|
Things to Consider
The three heads add up to more than the 24K BTU outdoor unit, so expect shared capacity when all rooms run hard at once. It has a 3.2 average from 7 ratings.
Best For
This system is best for three small rooms in a moderate climate.
Check the current price and availability of the YITAHOME 24K BTU 3 Zone Mini Split on Amazon.
#3 Daikin 24,000 BTU Dual Zone Mini Split: Best Premium Pick
Why We Picked It
Daikin’s 24,000 BTU Dual Zone is the premium choice, with a 12-year manufacturer warranty, a titanium air purifying filter and the Daikin One Home app, plus 9,000 BTU and 18,000 BTU heads.
Daikin’s 3MXM24 multi-split condenser powers two FTXV fan coils, one 9,000 BTU and one 18,000 BTU, each controlled independently. It is rated 21 SEER2, 10 HSPF2 and 12 EER2, with 23,000 BTU of rated cooling and 24,000 BTU of heating, and it comes with a 12-year manufacturer warranty, the longest here. Built-in Wi-Fi works with the Daikin One Home app, Alexa and Google Home, and a titanium air purifying filter improves indoor air. Heating runs from 5F to 59.9F outdoors, the indoor units are rated at 24 dB, and Maxwell 15 ft. installation kits are included.
Key Specifications
- Rated Cooling: 23,000 BTU
- Rated Heating: 24,000 BTU
- Indoor Units: 9,000 + 18,000 BTU
- Efficiency: 21 SEER2, 10 HSPF2, 12 EER2
- Noise Level: 24 dB indoor
- Warranty: 12 years
| Pros | Cons |
|---|---|
|
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Things to Consider
Daikin charges a large premium over budget brands, and heating is rated down to 5F rather than the -13F or -22F of cold-climate models.
Best For
This system is best for homeowners who value brand support and warranty above price.
Check the current price and availability of the Daikin 24,000 BTU Dual Zone Mini Split on Amazon.
Other Models Worth Considering
Gree Multi21+ 24,000 BTU Dual-Zone Mini Split. A Gree Multi21+ 24,000 BTU dual-zone system with LIVO wall heads, 21 SEER and a G10 inverter, sold without line sets.
What to Expect from 24,000 BTU Multi-Zone Mini-Split Systems
A 24,000 BTU system shares its output among its heads. Two-zone kits give each room up to 12,000 BTU, while three-zone kits trade head size for more rooms. Expect quiet operation, room-by-room control and a dedicated 230 volt circuit.
These systems need professional installation, and some, like the Gree Multi21+, ship without line sets.
For more options, see our guides to 1.5-ton multi-zone mini-split systems and 2.25-ton multi-zone mini-split systems. The product cards show the current price for each system.
How to Choose a 24,000 BTU Multi-Zone Mini-Split System
Size Each Indoor Unit to Its Room
ENERGY STAR publishes this general guide for sizing a room air conditioner by floor area. Use it for each room, then pick the indoor head closest to that room’s need:
| Room Size (sq ft) | Cooling Capacity (BTU/hr) |
|---|---|
| 100 to 150 | 5,000 |
| 150 to 250 | 6,000 |
| 250 to 300 | 7,000 |
| 300 to 350 | 8,000 |
| 350 to 400 | 9,000 |
| 400 to 450 | 10,000 |
| 450 to 550 | 12,000 |
| 550 to 700 | 14,000 |
| 700 to 1,000 | 18,000 |
Reduce capacity by 10 percent for a heavily shaded room, increase it by 10 percent for a very sunny room, add 600 BTU for each regular occupant beyond two, and add 4,000 BTU if the unit cools a kitchen. Source: ENERGY STAR.
Decide Between Two and Three Heads
Two 12K BTU heads suit two medium rooms. Three smaller heads cover more rooms, but each room gets less capacity on the hottest days.
Check What Is in the Box
Some kits include line sets and Wi-Fi, others sell them separately. Gree’s Multi21+ requires line sets that are not included.
Plan for Professional Installation
Almost every multi-zone system needs a licensed technician to mount the heads, run each line set, pull a vacuum and open the valves, and several brands tie the warranty to a professional install. Get an installation quote before you buy, because labor for several zones can rival the price of the equipment.
Compare Warranties and Support
Coverage ranges from 1 or 2 year terms on budget kits to 7, 10 or 12 years on compressors from established brands. Register the system after installation, keep the installer’s paperwork and check whether labor is covered.
How We Evaluate 24,000 BTU Multi-Zone Mini-Split Systems
We rank multi-zone mini splits on manufacturer specifications, listing details and aggregated buyer ratings. For this list we kept only complete systems sold with one outdoor condenser and all indoor heads, and excluded bundles of separate single-zone units, condenser-only and indoor-only listings, open-box units and listings with too little data. We weighed track record, efficiency, heating range and how well the head sizes match real rooms first, then compared noise, controls, included line sets, installation needs and warranty.
Frequently Asked Questions
How many rooms can a 24,000 BTU multi-zone system handle?
Usually two medium rooms or three small ones, depending on the kit.
Which 24,000 BTU system has the longest warranty?
Daikin lists a 12-year manufacturer warranty.
Can a 24,000 BTU system cover a small house?
Sometimes. YITAHOME lists its 24K BTU three-zone kit for 1350 square feet in total.
Do these systems need line sets?
Yes, one per head. Most kits include them, but the Gree Multi21+ does not.
Final Verdict
The TOSOT Cosmo 24,000 BTU 2 Zone Mini Split is the best 24,000 BTU multi-zone mini-split system for two medium rooms. For three rooms, choose the YITAHOME 24K BTU 3 Zone Mini Split. For a premium brand and a 12-year warranty, the Daikin 24,000 BTU Dual Zone Mini Split is the pick.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.