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Reviewed by Alex Chen & Morgan Webb Updated June 30, 2026

Mini split sizing

Mini Split Sizes Chart 2026: BTU by Room Size & Climate Zone (ACCA Manual J)

Sizing chart + calculator Based on ACCA Manual J (8th Edition) Reviewed by the WhatSize editorial team

Quick answer

Use the chart below to find your mini split size by room square footage and climate zone. A 400 sq ft bedroom in a moderate climate needs 9,000-10,000 BTU; a hot climate pushes that to 12,000 BTU. All recommendations follow ACCA Manual J simplified factors. Need an exact number? Use our free calculator for a custom BTU in 60 seconds.

Mini Split Sizing Table: BTU by Square Footage & Climate Zone

Room Size Mild Climate
~20 BTU/sq ft
Moderate
~25 BTU/sq ft
Hot Climate
~30 BTU/sq ft
Very Hot
~35 BTU/sq ft
100 sq ft2,000 BTU2,500 BTU3,000 BTU3,500 BTU
200 sq ft4,000 BTU5,000 BTU6,000 BTU7,000 BTU
300 sq ft6,000 BTU7,500 BTU9,000 BTU10,500 BTU
400 sq ft8,000 BTU10,000 BTU12,000 BTU14,000 BTU
500 sq ft10,000 BTU12,500 BTU15,000 BTU17,500 BTU
600 sq ft12,000 BTU15,000 BTU18,000 BTU21,000 BTU
800 sq ft16,000 BTU20,000 BTU24,000 BTU28,000 BTU
1,000 sq ft20,000 BTU25,000 BTU30,000 BTU35,000 BTU
1,200 sq ft24,000 BTU30,000 BTU36,000 BTU42,000 BTU
1,500 sq ft30,000 BTU37,500 BTU45,000 BTU52,500 BTU

How to read: Find your room’s sq ft on the left. Pick the climate column that matches your region (US zones 4-5, 3, 2, 1 respectively). The cell gives the base BTU requirement. Round to the nearest standard size (9k, 12k, 18k, 24k, 30k, 36k). For spaces over 1,000 sq ft, use a multi-zone system. Color key: green = single-zone small, amber = standard single-zone, orange = large single-zone, red = multi-zone or commercial.

Adjustments: When to Add More BTU

High Sun Exposure

South- or west-facing rooms: add +10% BTU. Skylights add +20%.

Poor Insulation

Pre-1980 homes without insulation upgrades: add +15-20% BTU.

High Occupancy

More than 2 people regularly in the room: add +600 BTU per extra person.

Example: 500 sq ft bedroom in Dallas (zone 2 = hot), south-facing, 2 occupants = 15,000 BTU (base) + 1,500 (sun) = 16,500 BTU, rounded up to 18,000 BTU.

Standard Mini Split Sizes: 9k vs 12k vs 18k vs 24k vs 30k vs 36k

Feature 9,000 BTU (0.75T) 12,000 BTU (1T) 18,000 BTU (1.5T) 24,000 BTU (2T)
Room Coverage (moderate climate)250–400 sq ft400–600 sq ft600–800 sq ft800–1,200 sq ft
Typical Power Draw (cool)600–900W900–1,300W1,300–1,900W1,800–2,500W
Noise (indoor, low fan)19–30 dB21–34 dB25–38 dB28–42 dB
SEER2 Range17–3017–2816–2416–22
Single-Zone Installed Cost$1,500–$2,800$1,800–$3,200$2,500–$4,500$3,200–$5,500
Best ForBedrooms, officesLiving rooms, small additionsOpen living areas, garagesWhole-floor, large open spaces

IECC Climate Zone Reference

The International Energy Conservation Code (IECC) divides the US into 8 climate zones based on heating/cooling degree days. Use this to pick which column of the chart above matches your location.

Zone 1 (Hot-Humid)
Miami, Houston, Honolulu
30-35 BTU/sq ft
Zone 2 (Hot)
Phoenix, Dallas, Atlanta
25-30 BTU/sq ft
Zone 3 (Warm)
Memphis, Charlotte, Albuquerque
22-25 BTU/sq ft
Zone 4 (Mixed)
New York, Chicago, Boston
20-25 BTU/sq ft
Zone 5 (Cool)
Minneapolis, Portland, Seattle
18-22 BTU/sq ft
Zone 6 (Cold)
Anchorage, Buffalo, Fargo
15-20 BTU/sq ft
Zone 7 (Very Cold)
Duluth, International Falls
12-15 BTU/sq ft
Zone 8 (Subarctic)
Barrow, Alaska
Use full Manual J

Mini Split Sizing FAQ

How do I use this mini split sizes chart?

Find your room's square footage in the left column. Pick the climate column that matches your region (mild, moderate, hot, or very hot — based on IECC climate zone). The intersecting cell gives the base BTU requirement. Apply adjustments: +10% for south/west exposure, +15-20% for poor insulation, +600 BTU per extra occupant. Round to the nearest standard size: 9k, 12k, 18k, 24k, 30k, 36k.

What size mini split for a 1,000 sq ft space?

A 1,000 sq ft space in a moderate climate (zone 3-4) needs 25,000 BTU. For open floor plans, use a multi-zone system with 2-3 indoor heads. For hot climates (zones 1-2), 1,000 sq ft often needs 30,000 BTU. Ceiling height and window exposure can push this 20-30% higher.

What BTU per square foot do I need?

20-25 BTU per square foot for well-insulated homes in mild climates, 25-30 BTU for moderate insulation and hot climates, 30-35 BTU for very hot or poorly insulated spaces. For accurate sizing, use ACCA Manual J load calculation accounting for windows, insulation, ceiling height, and sun exposure.

How do I know my IECC climate zone?

The IECC climate zone map is published by the DOE and ICC. Zone 1 covers hot-humid areas like Miami and Houston; Zone 8 covers subarctic Alaska. Most US homes fall in zones 3-5. Look up your zone at the DOE Energy Code website or your local building department.

Need an Exact BTU Recommendation?

Our free calculator factors in room size, climate zone, insulation, and sun exposure for a custom BTU in 60 seconds.

Try the Mini Split Calculator

Explore More Mini Split Guides

Best Mini Splits by BTU: Our Top Picks

Each pick is matched to its ACCA Manual J BTU range. We verify specs against manufacturer data and sort by value — never by commission. Read our product policy.

Best 9,000 BTU Mini Splits — ~400 sq ft

Senville LETO Series Mini Split Air Conditioner Heat Pump, 9000 BTU 110/120V, Inverter, Works with Alexa, SEER2 21.5, White #ad
★★★★☆ 4.5 · 1K+ · $700
Amazon
Senville AURA Series Mini Split Air Conditioner Inverter Heat Pump, 9000 BTU, Works with Alexa, Energy Star, White #ad
★★★★ 4.2 · 78 · $1053
Amazon
MRCOOL 9000 BTU 115V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/Heating and Cooling for Home, Office & Commercial Space #ad
★★★★ 4.2 · 49 · $1599
Amazon
ROVSUN 9000 BTU Wifi Enabled Mini Split Air Conditioner & Heater with Inverter, 20 SEER2 Energy Saving 115V Ductless Split AC Unit with Pre-Charged Condenser, Heat Pump & Installation Kit #ad
★★★★☆ 4.8 · 428+ · $500
Amazon
DELLA Motto Series 9100 BTU 20.5 SEER2 115V Mini Split AC, Cools Up to 400 Sq.Ft, Works with Alexa and Wifi, Ductless Inverter System Air Conditioner, Pre-Charged Heat Pump and 16ft Kits #ad
★★★★☆ 4.5 · 98 · $650
Amazon
MRCOOL 9000 BTU 115V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, 5th Gen DIY - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space #ad
★★★★☆ 4.5 · 42 · $2329
Amazon
DELLA Vario Series 9000 BTU Mini Split Air Conditioner, Work with Alexa and Wifi, 20 SEER2, Energy Star, 0.75 Ton, Cools Up to 400 Sq.Ft, Ductless Inverter System, Heat Pump Pre-Charged, 16.4ft Kits #ad
★★★★ 4.2 · 5 · $620
Amazon
MRCOOL 9000 BTU 115V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space #ad
★★★★ 4.2 · 17 · $1569
Amazon
Pioneer Diamante Pro 9,000 BTU 19 SEER2 115V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit #ad
★★★★ 4.2 · 5 · $858
Amazon
Pioneer Quantum Ultra 9,000 BTU 24 SEER2 115V High-Wall Ductless Energy-Star Mini-Split Air Conditioner Inverter Heat Pump Full Set #ad
★★★☆ 3.8 · 2 · $1098
Amazon
Mini Split AC/Heating System - 9000 BTU Mini Split AC Inverter Heating and Cooling, 19 SEER2 115V/110V Energy Efficient Ductless Air Conditioner Up to 550sq.ft, Pre-charged System, Installation Kit #ad
★★★★☆ 4.5 · 252+ · $300
Amazon
Mountman 9000 BTU Mini Split AC/Heating System,19 SEER2 110/120V Energy Efficient Ductless Inverter System,Cools Up to 450 Sq.Ft with Pre-Charged Condenser,Heat Pump & Installation Kits #ad
★★★★☆ 4.5 · 313+ · $370
Amazon
OLMO 9,000 BTU 115V Single Zone Wall Mount Ductless Mini Split Air Conditioner & Heat Pump – 16FT Installation Kit & Smart Kit Included – 20 SEER2 Inverter System – Pre-Charged Refrigerant #ad
★★★☆ 3.8 · 1 · $720
Amazon
9000 BTU Mini Split Air Conditioner 115V, 22 SEER2 AC & Heat Pump, Quiet Ductless System for Up to 450 Sq.Ft, R32 Refrigerant, WiFi Smart Control, Indoor & Outdoor Units, Installation Kit #ad
★★★★ 4.2 · 61 · $399
Amazon
DELLA Vario Series Mini Split Air Conditioner Works with Alexa,9000 BTU,Cools up to 400 Sq.Ft,19 SEER2,Ductless Inverter System,Energy Star,Heat Pump Pre-Charged and 16.4ft Installation Kits #ad
★★★★ 4 · 4 · $637
Amazon
DELLA Serena Series 9000 BTU Mini Split AC, Energy Star 22 SEER2 230V, 0.75 Ton Inverter Heat Pump Ductless AC System for Rooms up to 400 Sq.Ft, WiFi & Alexa Control, Pre-Charged, 16.4ft Install Kit #ad
★★★★ 4.2 · · $680
Amazon
Garvee 9000 BTU Mini Split AC/Heating System, 19 SEER2 115V WIFI Enabled Energy Efficient Mini Split Air Conditioner,Wall-Mounted Split AC Unit,Cools Up to 450 Sq.Ft, Heat Pump & Installation Kits #ad
★★★★☆ 4.5 · 5 · $387
Amazon
Cooper & Hunter 9,000 BTU 115V Single Zone Wall Mount Ductless Mini Split Air Conditioner & Heat Pump - 21.5 SEER2 - Smart Kit & 16FT Installation Kit - Pre-Charged - Inverter #ad
★★★☆ 3.8 · · $795
Amazon

Best 12,000 BTU Mini Splits — ~550 sq ft

Senville LETO Series Mini Split Air Conditioner Heat Pump, 12000 BTU 110/120V, Inverter, Works with Alexa, SEER2 20.8, 1 Ton, White #ad
★★★★☆ 4.5 · 2K+ · $800
Amazon
OLMO 12,000 BTU 230V Mini Split AC Heat Pump, Ductless Wall Mount - 20 SEER2 - Smart Kit & 16FT Installation Kit Included - Pre-Charged with R-32-1 Ton Inverter System #ad
★★★★☆ 4.5 · 36 · $748
Amazon
DELLA Vario Series 12000 BTU Mini Split Air Conditioner Work with Alexa with 1 Ton Pre-Charged Heat Pump Ductless Inverter System, 23 SEER2, Cools Up to 550 Sq. Ft,16.4ft Installation Kit Included #ad
★★★★☆ 4.8 · 579+ · $780
Amazon
COSTWAY 12000BTU Mini Split Air Conditioner& Heater, 20 SEER2 115V Wall-Mounted Ductless AC Unit Cools Rooms up to 750 Sq. Ft, Energy Efficient Inverter AC with Heat Pump (Blast Series) #ad
★★★★☆ 4.8 · 1K+ · $419
Amazon
DELLA Vario Series 12000 BTU Mini Split AC, Work with Alexa and Wifi, 20.5 SEER2 Cools Up to 550 Sq.Ft, Energy Efficient, 115V Ductless Inverter System, Pre-Charged Heat Pump and 16.4ft Kits #ad
★★★★☆ 4.8 · 317+ · $800
Amazon
Confortotal 12000 BTU Mini Split Air Conditioner and Heat Pump 110V Ductless,1 ton,with WIFI Compatible with Alexa #ad
★★★★☆ 4.5 · 366+ · $474
Amazon
DELLA Motto Series 12000 BTU 20 SEER2 115V Mini Split AC, Cools Up to 550 Sq.Ft, Works with Alexa and Wifi, Ductless Inverter System Air Conditioner, Pre-Charged Heat Pump and 16.4ft Kits #ad
★★★★☆ 4.8 · 282+ · $654
Amazon
MrCool Advantage 12k BTU 21.3 SEER2 Ductless Heat Pump Split System 5th Generation - 230v #ad
★★★★☆ 4.8 · 2 · $974
Amazon
YITAHOME 12000 BTU Mini Split AC/Heating System, Ductless Mini Split Air Conditioner Heat Pump,115V 20 SEER2 Energy Efficient Inverter AC Unit,Wifi Enabled Compatible with Alexa for Apartment, Garage #ad
★★★★☆ 4.5 · 292+ · $425
Amazon
MRCOOL 12000 BTU 115V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, 5th Gen DIY - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space #ad
★★★★ 4.2 · 42 · $1799
Amazon
MrCool Easy Pro 12k BTU 19.5 SEER2 Ductless Heat Pump Split System 5th Generation - DIY Mini Split w/ 16ft Lineset & 1 YR Labor Warranty by IWAE #ad
★★★★ 4.2 · 74 · $1649
Amazon
MRCOOL Easy Pro 12K BTU 19.5 SEER2 Ductless Heat Pump Mini Split System 5th Generation - DIY Mini Split w/ 16ft Lineset #ad
★★★★ 4.2 · 47 · $1499
Amazon
DELLA Serena 22 SEER2 12000 BTU Mini Split Heat Pump Works with Alexa, Energy Star 1 Ton Pre-Charged 230V Ductless AC Unit Inverter Air Conditioner System for Rooms up to 550Sq.Ft, 16.4ft Install Kit #ad
★★★★☆ 4.8 · 28 · $663
Amazon
OLMO 12,000 BTU 115V Ductless Mini Split Air Conditioner & Heat Pump – 17.4 SEER2 – Smart Kit &16FT Installation Kit Included – Inverter System – Pre-Charged with R-32 #ad
★★★☆ 3.8 · · $748
Amazon
Pioneer Diamante Pro 12,000 BTU 20 SEER2 230V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit #ad
★★★★☆ 4.5 · 9 · $858
Amazon
Pioneer Diamante Pro 12,000 BTU 20 SEER2 115V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit #ad
★★★★☆ 4.5 · 12 · $888
Amazon
12,000 BTU Mini Split AC & Heat Pump | 115v, Inverter, Smart WiFi, Remote | Ultra-Quiet, Energy Efficient for 750 Sq.Ft Space #ad
★★★★ 4.2 · 39 · $399
Amazon
YITAHOME 20 SEER2 12000BTU Mini Split AC/Heating System 115V, Pre-charged Inverter AC Cool & Heat Up to 750 Sq. Ft, 3 Level Eco Mode, Complete Installation Kit, White #ad
★★★★☆ 4.5 · 105+ · $450
Amazon
Garvee 12000 BTU Mini Split Air Conditioner,22 SEER2 Ductless Inverter AC w/ 115V, Cool Up to 750 Sq. Ft with Heat Pump System, Compatible with Alexa, White #ad
★★★★ 4.2 · 20 · $441
Amazon

Best 18,000 BTU Mini Splits — ~800 sq ft

Senville LETO Series Mini Split Air Conditioner Heat Pump, 18000 BTU 208/230V, Inverter, Works with Alexa, SEER2 19, 1.5 Ton, White #ad
★★★★☆ 4.5 · 1K+ · $1000
Amazon
Cooper & Hunter 18,000 BTU Dual 2-Zone 12K + 12K BTU Wall Mount Ductless Mini Split Air Conditioner & Heat Pump – 25FT Installation Kits – 22.5 SEER – Pre-Charged with R-410A – Inverter #ad
★★★★☆ 4.5 · 224+ · $1865
Amazon
Cooper & Hunter Dual Zone 9,000 + 12,000 BTU Ductless Mini Split AC/Heating System, Pre-Charged, Heat Pump, 21.3 SEER Including 25FT Copper Line Set And Communication Wires #ad
★★★★☆ 4.5 · 224+ · $1830
Amazon
MRCOOL 18000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Advantage Series - Wall-Mounted AC Unit w/Heating and Cooling for Home, Office & Commercial Space #ad
★★★★ 4.2 · 121+ · $1299
Amazon
Cooper & Hunter 18,000 BTU 230V Wall Mount Ductless Mini Split Air Conditioner & Heat Pump – 19.2 SEER2 Inverter System – Includes 16FT Installation Kit & Smart Kit – Pre-Charged #ad
★★★★☆ 4.8 · 421+ · $1085
Amazon
MRCOOL 18000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Advantage Series - Wall-Mounted AC Unit w/Heating and Cooling for Home, Office & Commercial Space #ad
★★★★ 4.2 · 121+ · $1299
Amazon
DELLA Vario Series 18000 BTU Wifi Mini Split AC, Work with Alexa 21 SEER2 Cools Up to 1000 Sq.Ft, Energy Efficient 230V Ductless Inverter System with 1.5 Ton Pre-Charged Heat Pump & 16.4ft Kit #ad
★★★★☆ 4.8 · 315+ · $1050
Amazon
COSTWAY 18,000 BTU Mini Split Air Conditioner, Energy Star, with Heat Pump, 21 SEER2 Inverter Split AC Unit with 24H Timer, Remote Control for Rooms up to 1250 Sq.Ft (Airtural Series) #ad
★★★★☆ 4.8 · 364+ ·
Amazon
YITAHOME 18000 BTU Mini Split AC/Heating System, WiFi Enabled 21 SEER2 208-230V Inverter Pre-charged AC Compatible with Alexa, Cool Up to 1250 Sq. Ft, Complete Installation Kit, 1.5 Ton #ad
★★★★ 4.2 · 105+ · $599
Amazon
YITAHOME 21 SEER2 18000 BTU Mini Split AC/Heating System 208-230V, Pre-charged Inverter System with Wi-Fi & Alexa Compatibility, Cover Up to 1250 Sq. Ft, Complete Installation Kit #ad
★★★★ 4.2 · 362+ · $630
Amazon
DELLA Serena 22 SEER2 18000 BTU Smart Wifi Mini Split Heat Pump Works with Alexa, Energy Star 1.5 Ton Pre-Charged 230V Ductless AC Unit Inverter System for Rooms up to 1000Sq.Ft, 16.4ft Install Kit #ad
★★★★☆ 4.8 · 40 · $1050
Amazon
MRCOOL 18000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space #ad
★★★★ 4.2 · 39 · $1827
Amazon
OLMO 18,000 BTU Ductless Mini Split Air Conditioner & Heat Pump – 21 SEER2 – 16FT Installation Kit Included – 230V Inverter System – Pre-Charged #ad
★★★☆ 3.8 · · $950
Amazon
Pioneer Diamante Pro 18,000 BTU 21 SEER2 230V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit #ad
★★★★☆ 4.5 · 10 · $1138
Amazon
Pioneer Quantum Ultra 18,000 BTU 23 SEER2 230V High-Wall Ductless Energy-Star Mini-Split Air Conditioner Inverter Heat Pump Full Set #ad
★★★★☆ 4.5 · 1 · $1538
Amazon
Dual Split 18000 BTU 1.5-Ton Quantum Ultra Wi-Fi 24 SEER2 Energy-Star Multi (2) Zone Wall Mount Air Conditioner Heat Pump 230-Volt #ad
★★★☆ 3.8 · 1 · $2024
Amazon
18,000 BTU Ductless Mini Split AC & Heat Pump, 21 SEER2 Inverter, Ultra-Quiet, WiFi & Voice Control, 4 Modes, Cools & Heats Up to 1,250 Sq.ft, Install Kit, 208-230V #ad
★★★★☆ 4.5 · 39 · $650
Amazon
YITAHOME 18000 BTU Mini Split AC/Heating System, WiFi Enabled 21 SEER2 208-230V Inverter Pre-charged AC Compatible with Alexa, Cool Up to 1250 Sq. Ft, Complete Installation Kit, 1.5 Ton #ad
★★★★ 4.2 · 105+ · $599
Amazon
YITAHOME 18000 BTU Mini Split AC/Heating System, Ductless Mini Split Air Conditioner Heat Pump,230V 19 SEER2 Energy Efficient Inverter AC Unit,Wifi Enabled Compatible with Alexa for Apartment, Garage #ad
★★★★★ 5 · · $578
Amazon

Best 24,000 BTU Mini Splits — ~1,100 sq ft

Senville AURA Series Mini Split Air Conditioner Inverter Heat Pump, 24000 BTU, Works with Alexa, Energy Star, White #ad
★★★★☆ 4.8 · 528+ · $1800
Amazon
Senville LETO Series Mini Split Air Conditioner Heat Pump, 24000 BTU 208/230V, Inverter, Works with Alexa, 2 Ton, White #ad
★★★★ 4.2 · 1K+ · $1250
Amazon
MRCOOL 24000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/Heating and Cooling for Home, Office & Commercial Space #ad
★★★★☆ 4.8 · 87 · $2199
Amazon
Cooper & Hunter 24,000 BTU 230V Single Zone Wall Mount Ductless Mini Split Air Conditioner & Heat Pump - 18.7 SEER2 - Smart Kit & 16FT Installation Kit - Pre-Charged Inverter #ad
★★★★☆ 4.5 · 302+ · $1408
Amazon
MRCOOL 24000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/Heating and Cooling for Home, Office & Commercial Space #ad
★★★★☆ 4.8 · 87 · $2199
Amazon
COSTWAY 24000BTU Mini Split Air Conditioner& Heater,18.5 SEER2 208-230V Wall-Mounted Ductless AC Unit Cools Rooms up to 1500 Sq. Ft, Energy Efficient Inverter AC w/Heat Pump (Blast Series) #ad
★★★★☆ 4.5 · 1K+ · $880
Amazon
DELLA Vario Series 24000 BTU Mini Split AC, 2 Ton 21 SEER2, Work with Alexa and Wifi, 230V Ductless Inverter System, Cools Up to 1500 Sq.Ft, Pre-Charged Heat Pump and 16.4ft Installation Kits #ad
★★★★☆ 4.5 · 113+ · $1500
Amazon
DELLA Econo Series 23000 BTU Mini Split Air Conditioner 17 SEER2, 230V Cools up to 1500 Sq. Ft, Works with Alexa and Wifi, Heater Ductless Inverter System with Heat Pump,16.4ft Installation Kit #ad
★★★★☆ 4.5 · 118+ · $1100
Amazon
OLMO 24,000 BTU 2-Zone Ductless Mini Split AC Heat Pump - 22 SEER2-12K+18K Wall Mounts - 16FT Installation Kits & Smart Kit Included - 2 Ton Inverter #ad
★★★☆ 3.8 · · $1655
Amazon
YITAHOME 21 SEER2 24000 BTU Mini Split AC/Heating System, 208-230V Pre-charged Inverter System with Wi-Fi&Alexa Compatibility, Cover Up to 1500 Sq. Ft, Complete Installation Kit Included #ad
★★★★☆ 4.8 · 363+ · $936
Amazon
MrCool Advantage 12k BTU 21.2 SEER2 Ductless Heat Pump Split System 5th Generation - 115v #ad
★★★★ 4.2 · 12 · $1013
Amazon
MRCOOL 24000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space #ad
★★★★☆ 4.5 · 48 · $2149
Amazon
OLMO 24,000 BTU Ductless Mini Split Air Conditioner & Heat Pump – 19.5 SEER2 – 16FT Installation Kit Included – 230V Inverter System – Pre-Charged with R-32 #ad
★★★☆ 3.7 · 1 · $1130
Amazon
Cooper & Hunter 24,000 BTU Ductless Mini Split Air Conditioner & Heat Pump – 23.5 SEER2 – 230V Inverter – 16FT Installation Kit Included – Midnight Edition #ad
★★★★☆ 4.8 · 1 · $2100
Amazon
Pioneer Diamante Pro 24,000 BTU 21 SEER2 230V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit #ad
★★★★☆ 4.5 · 4 · $1438
Amazon
Pioneer Quantum Ultra 24,000 BTU 23 SEER2 230V High-Wall Ductless Energy-Star Mini-Split Air Conditioner Inverter Heat Pump Full Set #ad
★★★★☆ 4.5 · 1 · $1888
Amazon
24000 BTU Mini Split Air Conditioner 230V, 19 SEER2 AC & Heat Pump, Quiet Ductless System for Up to 1500 Sq.Ft, R32 Refrigerant, WiFi Smart Control, Indoor & Outdoor Units, Installation Kit #ad
★★★★☆ 4.5 · 61 · $765
Amazon
DELLA Serena Series 22 SEER2 23000 BTU Mini Split, Works with Alexa and Wifi, Energy Star, 230V, 2 Ton Pre-Charged, Ductless AC Unit Inverter Heat Pump System for Rooms up to 1500 Sq.Ft, 16.4ft Kit #ad
★★★★☆ 4.5 · 4 · $1275
Amazon
Albott Mini Split Air Conditioner and Heater, 24,000 BTU, SEER2 18, 208-230V Inverter Energy-Efficient AC with Self-Cleaning, Remote and APP Control, Easy Installation, Cools up to 1550 Sq.Ft. #ad
★★★★☆ 4.5 · 211+ · $750
Amazon
YITAHOME 20 SEER2 24000BTU Mini Split AC/Heating System 208-230V, Pre-charged Inverter AC Cool & Heat Up to 1500 Sq. Ft, Pure Design, Compatible with 3 Level Eco Mode, Complete Installation Kit, White #ad
★★★★☆ 4.5 · 105+ · $810
Amazon
YITAHOME 24000 BTU Mini Split AC/Heating System, Ductless Mini Split Air Conditioner Heat Pump,230V 20 SEER2 Energy Efficient Inverter AC Unit,Wifi Enabled Compatible with Alexa for Apartment, Garage #ad
★★★★☆ 4.5 · · $900
Amazon

Best 36,000 BTU Mini Splits — multi-zone

Senville 36000 BTU Tri Zone Mini Split Air Conditioner Heat Pump, 3 Ton, 3 Zone, Works with Alexa, White #ad
★★★★☆ 4.8 · 110+ · $3200
Amazon
Senville 36000 BTU Quad Zone Mini Split Air Conditioner Heat Pump, 3 Ton, 4 Zone, Works with Alexa, White #ad
★★★★☆ 4.8 · 136+ · $3300
Amazon
Senville 36000 BTU Dual Zone Mini Split Air Conditioner Heat Pump, 3 Ton, 2 Zone, Works with Alexa, White #ad
★★★★☆ 4.8 · 87 · $3100
Amazon
MRCOOL 36000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Advantage Series - Wall-Mounted AC Unit w/Heating and Cooling for Home, Office & Commercial Space #ad
★★★★☆ 4.5 · 4 · $2699
Amazon
Senville LETO Series Mini Split Air Conditioner Heat Pump, 36000 BTU 208/230V, Inverter, Works with Alexa, 3 Ton, White #ad
★★★★☆ 4.5 · 118+ · $2100
Amazon
DELLA Vario Series 36,000 BTU 3 Ton 19 SEER2 Ductless Mini Split AC, Pre-Charged Heat Pump, 230V Energy Efficient Inverter System, Work with Alexa, Cools up to 2500 Sq.Ft, 16.4ft Installation Kit #ad
★★★★☆ 4.5 · 52 · $2200
Amazon
OLMO 36,000 BTU 3-Zone Ductless Mini Split AC Heat Pump - 21 SEER2-12K+12K+12K Wall Mounts - 25FT Installation Kits & Smart Kit Included - 3 Ton Inverter #ad
★★★★☆ 4.8 · · $2620
Amazon
TURBRO 36,000 BTU Dual Zones Mini Split AC/Heat Pump, 22.5 SEER2, R454B, Ductless Inverter, WiFi, Greenland (2 x 18K), 230V, includes 36ft copper linesets for whole home, 2 rooms, open floor plan #ad
★★★☆ 3.8 · · $2299
Amazon
MrCool DIY 36k BTU 18 SEER2 Ductless Mini Split AC & Heat Pump w/ 25ft Lineset - 5th Generation - Energy Star 230v with 1 YR Labor Warranty by IWAE #ad
★★★★☆ 4.8 · 3 · $3769
Amazon
Pioneer Diamante Pro 36,000 BTU 19 SEER2 230V High-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump with 16 Ft. Kit #ad
★★★☆ 3.8 · 5 · $2168
Amazon
Albott Mini Split Air Conditioner and Heater, 36,000 BTU, SEER2 18, 208-230V Inverter Energy-Efficient AC with Self-Cleaning, Remote and APP Control, Easy Installation, Cools up to 2500 Sq.Ft. #ad
★★★★★ 5 · 211+ · $1700
Amazon
YITAHOME 3 Zone 36000 BTU Mini Split AC/Heating System, 20 SEER2 12000 BTU WiFi Enabled 115V Multi Zone Ductless Air Conditioner with 3 Outdoor Units, Enable Different Modes Simultaneously #ad
★★★★ 4.2 · 1 · $1500
Amazon
DELLA Vita Series 36000 BTU Mini Split Air Conditioner, Energy Efficient, 20 SEER2 230V, Cools up to 2500 Sq. Ft,3 Ton Heat Pump, Works with Alexa & Wifi,Ductless Inverter System,Pre-Charged,16ft Kit #ad
★★★★☆ 4.5 · · $2100
Amazon
YITAHOME 2 Zone 36000 BTU Mini Split AC/Heating System, 19 SEER2 18000 BTU WiFi Enabled 230V Dual Zone Ductless Air Conditioner with 2 Outdoor Units, Enable Different Modes Simultaneously #ad
★★★★★ 5 · 1 · $1400
Amazon

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How this was calculated

Standard used

ACCA Manual J (8th Edition) — Simplified load factors by IECC climate zone

Formula

BTU = room sq ft × BTU/sq ft (by climate zone) × adjustment factors

Simplifying assumptions

  • 8 ft ceiling height
  • Average insulation (R-13 walls, R-30 ceiling)
  • Standard window area (15% of floor area)