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Best Split-System (Sep 2026)

47 products · 1 buying guide

Handpicked Reviews

Rated by Tobias Renner, HVAC & Heating Editor · Published in Sep 2026.

Split-System
Split-System
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Our take on Split-System

Eight ductless mini-splits, $530 to $2,200, scored on BTU sizing against room volume, SEER2 rating, 115V versus 230V wiring, and whether the unit heats as well as it cools. HPR 9.3 · DELLA Vario 12000 BTU · based on 1,444 reviews · $780 — first because 12,000 BTU is the honest size for a large bedroom or open living space, it runs on a standard 115V circuit, and the heat-pump side works down to conditions most of the country sees. It is also the model with the largest body of owner experience here. HPR 9.1 · DELLA Motto 9100 BTU 20.5 SEER2 · based on 835 reviews · $650 — the efficiency pick for a single room, and the cheapest to run. HPR 9.0 · DELLA Optima 9000 BTU · based on 268 reviews · $900 — the quieter unit of the three. Two cautions. Size by room first and brand second: an oversized unit short-cycles, which cools the air without removing humidity. And installation needs the lines vacuumed and charged — budget for that even on a DIY mount.

Ductless mini-splits compared on BTU sizing, SEER2 rating, 115V versus 230V wiring and whether the unit heats in winter. Size by room first, brand second. How we rate

At a Glance: Our Top Picks

Ranked by our editors — HPR scores from Best Mini-Split Air Conditioners for 2026: Single and Multi-Zone Compared

Top 1
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 In
DELLA Vario Series 12000 BTU Mini Split Air Conditioner Work with…
9.3
HPR Score · 9.3/10Check Price at Amazon →Read Review
Top 2
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
DELLA Motto Series 9100 BTU 20.5 SEER2 115V Mini Split AC, Cools Up to…
9.1
HPR Score · 9.1/10Click For Price →Read Review
Top 3
DELLA Optima Series 9000 BTU Mini Split AC with Soft Airflow, Hyper Heat Down to -13°F, Up to 400 Sq. Ft, 23 SEER2 115V, Energy Star, WiFi & Alexa, Inverter AC, 0.75 Ton Pre-Charged Heat Pump, 1
DELLA Optima Series 9000 BTU Mini Split AC with Soft Airflow, Hyper…
9.0
HPR Score · 9.0/10Click For Price →Read Review

Our editors analyzed 47 products across 4 brands. The ranked list below reflects the order we publish in Best Mini-Split Air Conditioners for 2026: Single and Multi-Zone Compared. We may earn a commission when you buy through links on this site, at no extra cost to you.

Top picks in Split-System

Ranked by our editors — the same order as Best Mini-Split Air Conditioners for 2026: Single and Multi-Zone Compared. HPR is the score we gave in that guide; we do not publish a second, unexplained score.

Read the full guide →
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 In
#1DELLA
DELLA Vario Series 12000 BTU Mini Split Air Conditioner Work with Alexa with 1 Ton Pre-Charged…
Features (3)
  • 12,000 BTU, 115V
  • Works with Alexa
  • Cools up to 550 sq ft
$779.96HPR 9.3/10Ratings for DELLA Vario Series… (HPR Score) ?View on Amazon →Read the full guide →
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
#2DELLA
DELLA Motto Series 9100 BTU 20.5 SEER2 115V Mini Split AC, Cools Up to 400 Sq.Ft, Works with…
Features (3)
  • 9,100 BTU, 20.5 SEER2
  • 115V plug-in circuit
  • Cools up to 400 sq ft
$649.96HPR 9.1/10Ratings for DELLA Motto Series… (HPR Score) ?View on Amazon →Read the full guide →
DELLA Optima Series 9000 BTU Mini Split AC with Soft Airflow, Hyper Heat Down to -13°F, Up to 400 Sq. Ft, 23 SEER2 115V, Energy Star, WiFi & Alexa, Inverter AC, 0.75 Ton Pre-Charged Heat Pump, 1
#3DELLA
DELLA Optima Series 9000 BTU Mini Split AC with Soft Airflow, Hyper Heat Down to -13°F, Up to…
Features (3)
  • Hyper heat down to -13F
  • 9,000 BTU
  • Soft airflow for bedrooms
$899.96HPR 9.0/10Ratings for DELLA Optima Series… (HPR Score) ?View on Amazon →Read the full guide →
DELLA Serena CloudAir Series 12000 BTU Mini Split AC with Soft Airflow, Energy Star 22 SEER2 115V, 1 Ton Inverter Heat Pump Ductless AC for up to 550 Sq.Ft, WiFi & Alexa, Pre-Charged, 16.4ft
#4DELLA
DELLA Serena CloudAir Series 12000 BTU Mini Split AC with Soft Airflow, Energy Star 22 SEER2…
Features (3)
  • 12,000 BTU, 22 SEER2
  • Soft airflow design
  • Quiet indoor head
$799.96HPR 8.8/10Ratings for DELLA Serena CloudAir… (HPR Score) ?View on Amazon →Read the full guide →
Mountman 24000 BTU Mini Split AC/Heating System, 19 SEER2 208/230V Energy Efficient Ductless Inverter System, Cools Up to 1500 Sq.Ft with Pre-Charged Condenser, Heat Pump & Installation Kits
#5Mountman
Mountman 24000 BTU Mini Split AC/Heating System, 19 SEER2 208/230V Energy Efficient Ductless…
Features (3)
  • 24,000 BTU, 19 SEER2
  • 208/230V, large rooms
  • Covers up to 1,500 sq ft
$999.99HPR 8.6/10Ratings for Mountman 24000 BTU… (HPR Score) ?View on Amazon →Read the full guide →
GarveeHome 12000 BTU Mini Split AC Heat Pump Inverter 17 SEER2
#6GarveeHome
GarveeHome 12000 BTU Mini Split AC Heat Pump Inverter 17 SEER2
Features (3)
  • 12,000 BTU for $430
  • 17 SEER2 inverter
  • Cheapest credible 230V unit
$430.00HPR 8.3/10Ratings for GarveeHome 12000 BTU… (HPR Score) ?View on Amazon →Read the full guide →
DELLA 20K BTU Dual Zone Mini Split AC (2x9K), 19 SEER2, Up to 800 Sq Ft
#7DELLA
DELLA 20K BTU Dual Zone Mini Split AC (2x9K), 19 SEER2, Up to 800 Sq Ft
Features (3)
  • Dual zone, 2 x 9,000 BTU
  • One outdoor unit
  • Covers two rooms to 800 sq ft
$1,829.96HPR 8.1/10Ratings for DELLA 20K BTU Dual… (HPR Score) ?View on Amazon →Read the full guide →
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 Installatio
#8DELLA
DELLA Vario Series 36, 000 BTU 3 Ton 19 SEER2 Ductless Mini Split AC, Pre-Charged Heat Pump,…
Features (3)
  • 36,000 BTU, 3 ton
  • 19 SEER2, 230V
  • Whole floor or open plan
$2,199.96HPR 8.0/10Ratings for DELLA Vario Series 36,… (HPR Score) ?View on Amazon →Read the full guide →

Split-System Picks

Showing 1–24 of 47 · page 1 of 2.

Della 25 Ft Mini Split Line Set, Includes 1/4" & 5/8" O.D. Copper Pipes with Flared Nuts and a 3/8" Thick White PE Insulated Coil, Perfect for Mini Split AC and Other HVAC Systems
DELLA
Della 25 Ft Mini Split Line Set, Includes 1/4" & 5/8" O.D. Copper Pipes with Flared Nuts and a 3/8" Thick White PE Insulated Coil, Perfect for Mini Split AC and Other HVAC Systems
$274.96
Click For Price →
DELLA 16 Ft Mini Split Line Set, Includes 1/4" & 1/2" O.D. Copper Pipes with Flared Nuts and a 3/8" Thick White PE Insulated Coil, Perfect for Mini Split AC and other HVAC Systems
DELLA
DELLA 16 Ft Mini Split Line Set, Includes 1/4" & 1/2" O.D. Copper Pipes with Flared Nuts and a 3/8" Thick White PE Insulated Coil, Perfect for Mini Split AC and other HVAC Systems
$134.96
Click For Price →
Della Outdoor Wall Mounting Bracket for Ductless 6000 - 36000 BTU Mini Split, Compressor and Heat Pump System, Easy to Install Universal Heavy Duty Mini Split Bracket, Supports up to 485 LBS
DELLA
Della Outdoor Wall Mounting Bracket for Ductless 6000 - 36000 BTU Mini Split, Compressor and Heat Pump System, Easy to Install Universal Heavy Duty Mini Split Bracket, Supports up to 485 LBS
$59.96
Click For Price →
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 Installatio
DELLA
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 Installatio
$2,199.96
Click For Price →
DELLA 20K BTU Dual Zone Mini Split AC (2x9K), 19 SEER2, Up to 800 Sq Ft
DELLA
DELLA 20K BTU Dual Zone Mini Split AC (2x9K), 19 SEER2, Up to 800 Sq Ft
$1,829.96
Click For Price →
GarveeHome 12000 BTU Mini Split AC Heat Pump Inverter 17 SEER2
GarveeHome
GarveeHome 12000 BTU Mini Split AC Heat Pump Inverter 17 SEER2
$430.00
Click For Price →
Mountman 24000 BTU Mini Split AC/Heating System, 19 SEER2 208/230V Energy Efficient Ductless Inverter System, Cools Up to 1500 Sq.Ft with Pre-Charged Condenser, Heat Pump & Installation Kits
Mountman
Mountman 24000 BTU Mini Split AC/Heating System, 19 SEER2 208/230V Energy Efficient Ductless Inverter System, Cools Up to 1500 Sq.Ft with Pre-Charged Condenser, Heat Pump & Installation Kits
$999.99
Click For Price →
DELLA Serena CloudAir Series 12000 BTU Mini Split AC with Soft Airflow, Energy Star 22 SEER2 115V, 1 Ton Inverter Heat Pump Ductless AC for up to 550 Sq.Ft, WiFi & Alexa, Pre-Charged, 16.4ft
DELLA
DELLA Serena CloudAir Series 12000 BTU Mini Split AC with Soft Airflow, Energy Star 22 SEER2 115V, 1 Ton Inverter Heat Pump Ductless AC for up to 550 Sq.Ft, WiFi & Alexa, Pre-Charged, 16.4ft
$799.96
Click For Price →
DELLA Optima Series 9000 BTU Mini Split AC with Soft Airflow, Hyper Heat Down to -13°F, Up to 400 Sq. Ft, 23 SEER2 115V, Energy Star, WiFi & Alexa, Inverter AC, 0.75 Ton Pre-Charged Heat Pump, 1
DELLA
DELLA Optima Series 9000 BTU Mini Split AC with Soft Airflow, Hyper Heat Down to -13°F, Up to 400 Sq. Ft, 23 SEER2 115V, Energy Star, WiFi & Alexa, Inverter AC, 0.75 Ton Pre-Charged Heat Pump, 1
$899.96
Click For Price →
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
DELLA
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
$649.96
Click For Price →
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 In
DELLA
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 In
$779.96
Click For Price →
DELLA 36K BTU 4 Zone (4x9K BTU) Concealed Ducted Mini Split AC, 20 SEER2
DELLA
DELLA 36K BTU 4 Zone (4x9K BTU) Concealed Ducted Mini Split AC, 20 SEER2
$5,299.96
Click For Price →
DELLA 48K BTU 6 Zone (3x9K+3x12K BTU) Ducted Mini Split AC, 20 SEER2
DELLA
DELLA 48K BTU 6 Zone (3x9K+3x12K BTU) Ducted Mini Split AC, 20 SEER2
$7,199.96
Click For Price →
DELLA 48K BTU 6 Zone (5x9K+12K BTU) Concealed Ducted Mini Split AC 20 SEER2
DELLA
DELLA 48K BTU 6 Zone (5x9K+12K BTU) Concealed Ducted Mini Split AC 20 SEER2
$7,099.96
Click For Price →
DELLA 48K BTU 6 Zone (6x9K BTU) Concealed Ducted Mini Split AC, 20 SEER2
DELLA
DELLA 48K BTU 6 Zone (6x9K BTU) Concealed Ducted Mini Split AC, 20 SEER2
$7,049.96
Click For Price →
DELLA 48K BTU 6 Zone (4x9K+2x12K BTU) Ducted Mini Split AC, 20 SEER2
DELLA
DELLA 48K BTU 6 Zone (4x9K+2x12K BTU) Ducted Mini Split AC, 20 SEER2
$7,149.96
Click For Price →
DELLA 27K BTU 4 Zone (4x9K BTU) Concealed Ducted Mini Split AC, 22 SEER2
DELLA
DELLA 27K BTU 4 Zone (4x9K BTU) Concealed Ducted Mini Split AC, 22 SEER2
$4,799.96
Click For Price →
DELLA 27K BTU 4 Zone (4x9K BTU) Concealed Ducted Mini Split AC, 22 SEER2
DELLA
DELLA 27K BTU 4 Zone (4x9K BTU) Concealed Ducted Mini Split AC, 22 SEER2
$5,159.96
Click For Price →
DELLA 36K BTU 5 Zone (5x9K BTU) Concealed Ducted Mini Split AC, 20 SEER2
DELLA
DELLA 36K BTU 5 Zone (5x9K BTU) Concealed Ducted Mini Split AC, 20 SEER2
$5,924.96
Click For Price →
DELLA 36K BTU 5 Zone (4x9K+12K BTU) Concealed Ducted Mini Split AC 20 SEER2
DELLA
DELLA 36K BTU 5 Zone (4x9K+12K BTU) Concealed Ducted Mini Split AC 20 SEER2
$5,974.96
Click For Price →
DELLA 27, 000 BTU 2 Zone (2x18K) Ceiling Cassette Mini Split AC, 24 SEER2
DELLA
DELLA 27, 000 BTU 2 Zone (2x18K) Ceiling Cassette Mini Split AC, 24 SEER2
$3,239.96
Click For Price →
DELLA 55000 BTU 2-Zone (2x23K) Ceiling Cassette Mini Split AC, 22.5 SEER2
DELLA
DELLA 55000 BTU 2-Zone (2x23K) Ceiling Cassette Mini Split AC, 22.5 SEER2
$5,399.96
Click For Price →
DELLA 55K BTU 2 Zone (2x22K BTU) Concealed Ducted Mini Split AC, 18.5 SEER2
DELLA
DELLA 55K BTU 2 Zone (2x22K BTU) Concealed Ducted Mini Split AC, 18.5 SEER2
$5,159.96
Click For Price →
DELLA 20000 BTU 3-Zone (3x9K) Ceiling Cassette Mini Split AC, 27 SEER2
DELLA
DELLA 20000 BTU 3-Zone (3x9K) Ceiling Cassette Mini Split AC, 27 SEER2
$4,254.96
Click For Price →

Split-System FAQ

How many BTU for my room?

About 20 BTU per square foot, more for sunny or poorly insulated rooms. Oversizing causes short cycling and poor humidity removal.

Do mini-splits heat too?

Most are heat pumps and heat well until deep cold, where capacity drops. Check the rated heating output at your winter temperature.

115V or 230V?

115V suits 9,000-12,000 BTU units on a dedicated circuit; larger units need 230V and an electrician.

What is SEER2?

The current efficiency rating, tested at higher external pressure than SEER. A higher number means lower running cost.

Can I install it myself?

You can mount the indoor unit, but the lines need vacuuming and charging, which needs gauges and a licence in many places.

How often do filters need cleaning?

Every two to four weeks in season. A clogged filter is the most common cause of poor cooling and icing.

Buying Guides

Ranked guides that cover Split-System.

See all buying guides →
Best Mini-Split Air Conditioners for 2026: Single and Multi-Zone ComparedEight ductless mini-splits from $430 to $2,200 compared on BTU sizing, SEER2 rating,115V versus 230V wiring and whether they heat in winter.Read the guide →