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These 15 best mini split air conditioners with heating are ranked by published specifications. The Rellytech 18000 BTU 230V Mini Split leads because it covers 1,250 square feet with 19 SEER2 efficiency. We compared each model’s heating capacity, voltage, and energy ratings. You will find options for 115V, 230V, and smart control setups. This guide helps you decide which unit fits your room size and electrical setup.
Match voltage and capacity to your room
Check your outlet first. Standard 115V units like the YITAHOME 12000 BTU fit small rooms up to 750 square feet. Larger spaces need 230V models like the Rellytech 18000 BTU for 1,250 square feet. Choosing the wrong voltage prevents installation. Matching capacity to room size ensures the heater runs efficiently without wasting energy.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Rellytech 18000 BTU 230V Mini Split Best overall | Medium rooms needing strong heating | |
| 2 | Albott 18k BTU 230V Mini Split Best offices | medium offices with 208-230V power | |
| 3 | COSTWAY 24000 BTU 230V Mini Split Best premium | large rooms needing strong heating capacity | |
| 4 | Mountman 12000 BTU 230V Mini Split Also great | medium rooms with 208-230V power | |
| 5 | Senville LETO 9000 BTU 115V Best 120v | small rooms with 120V power | |
| 6 | YITAHOME 12000 BTU 115V Mini Split Best cover | small rooms with standard 115V outlets | |
| 7 | Tehanld 12000 BTU Mini Split Best budget | standard 115V outlets and rooms under 750 sq ft | |
| 8 | COSTWAY Blast Pro 18000 BTU 230V Also great | large rooms needing smart heating | |
| 9 | Temprium 18,000 BTU Mini Split AC Also great | 230V homes needing quiet 18,000 BTU heating | |
| 10 | DELLA Vario 12K BTU 23 SEER2 Also great | energy-efficient cooling and quiet heating | |
| 11 | Pioneer Diamante Pro 9000 BTU Also great | small rooms needing cold-climate heating | |
| 12 | DELLA Serena 12000 BTU 230V Mini Split Also great | smart homes needing 12000 BTU efficiency | |
| 13 | MEPTY 18000 BTU 19 SEER2 Mini Split Also great | medium rooms needing 230V heating | |
| 14 | ROVSUN 9000 BTU 20 SEER2 Mini Split Also great | small rooms with standard 115V outlets | |
| 15 | Garvee 18000 BTU 19 SEER2 Mini Split Best remote | large rooms needing quiet heating and cooling |
The best fit for you
- You need strong heating for medium rooms – Rellytech 18000 BTU 230V Mini Split – The 18,000 BTU capacity covers 1,250 square feet effectively.
- You want the most compact model on the list – DELLA Serena 12000 BTU 230V Mini Split – Weighing just 16.5 pounds, it is the lightest unit here.
- You have small rooms with standard 115V outlets – Senville LETO 9000 BTU 115V – The 9,000 BTU unit runs on 120V power for small spaces.
- You want high efficiency for energy savings – DELLA Vario 12K BTU 23 SEER2 – The 23 SEER2 rating offers the highest efficiency score available.
Rellytech 18000 BTU 230V Mini Split
Best for: Medium rooms needing strong heating
- Operating Modes
- Heating
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- Up to 1,250 sq. ft.
- SEER2 Rating
- 19
- Voltage
- 208-230V
- Features
- Inverter
The Rellytech 18000 BTU mini split provides 18,400 BTU of heating and 18,000 BTU of cooling. It covers up to 1,250 square feet with a 19 SEER2 rating and 8.5 HSPF2. This 230V system includes four operating modes and four fan speeds. You get 90-degree vertical swing for even airflow. It is a solid choice for medium-sized rooms that need reliable year-round temperature control.
- 18,400 BTU heating capacity
- 19 SEER2 energy efficiency rating
- Covers 1,250 square feet
- Four operating modes including heating
- 90-degree vertical air swing
- 19 SEER2 is lower than the 22 SEER2 Della Serena
- Heavier build at 112 pounds
- Lower cooling BTU than the 24000 BTU Costway
- You need heating for a 1,250 sq. ft. space
- You prefer a 230V power connection
- You want four fan speeds for airflow control
- You require the highest SEER2 rating on the list
- You have a 115V outlet only
- You need a unit under 100 pounds
Verdict: Rellytech 18000 BTU Mini Split delivers strong heating performance for medium rooms. It suits buyers who prioritize coverage area and 230V reliability over peak efficiency scores.
Albott 18k BTU 230V Mini Split
Best for: medium offices with 208-230V power
- Operating Modes
- Heating
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- Up to 1,250 sq ft
- SEER2 Rating
- 19
- Voltage
- 208-230V
- Room
- Offices
The Albott 18000 BTU mini split is a heat pump designed for offices. It delivers 19 SEER2 efficiency on a 208-230V circuit. The unit cools or heats spaces up to 1,250 square feet. You get four operating modes, including dehumidifying and fan settings. A 24-hour timer and sleep mode add convenience. The system includes self-cleaning technology to reduce dust buildup over time.
- 19 SEER2 energy efficiency rating
- Covers up to 1,250 square feet
- Four operating modes including heating
- 24-hour timer and sleep mode
- Self-cleaning function at 135°F
- Lower SEER2 rating than top competitors offering 20.5 or 22 SEER2
- Heavier build at 151 pounds compared to lighter 9000 BTU units
- Requires 208-230V power, limiting placement to dedicated circuits
- You need cooling for an office up to 1,250 square feet
- You have a 208-230V electrical circuit available
- You want a unit with self-cleaning capabilities
- You require a 115V plug-in unit for easy installation
- You need the highest possible SEER2 efficiency on the list
- You are cooling a small room under 500 square feet
Verdict: Albott 18000 BTU Mini Split fits office managers who need reliable heating and cooling for medium-sized rooms with dedicated 208-230V power. It offers solid efficiency and coverage for daily business use.
COSTWAY 24000 BTU 230V Mini Split
Best for: large rooms needing strong heating capacity
- Operating Modes
- Heating
- Cooling Capacity
- 24000 BTU
- Coverage Area
- up to 1500 Sq. Ft
- SEER2 Rating
- 18.5 SEER2
- Voltage
- 208-230V
- Smart Compatibility
- remote control
This 24,000 BTU mini split handles cooling and heating for larger spaces. It runs on 208-230V power with an 18.5 SEER2 rating. The inverter technology adjusts compressor speed for steady temperatures. You get five operating modes and four fan speeds. The unit includes self-cleaning and auto-defrost features. It weighs 68 pounds and measures 44.5 inches wide.
- 24,000 BTU capacity for large rooms
- 18.5 SEER2 energy efficiency rating
- Inverter compressor for stable temperature control
- 5 operating modes including heat and dry
- 5-year parts and 8-year compressor warranty
- Lower 18.5 SEER2 rating compared to 19-23 SEER2 competitors
- Heavier 68-pound weight than lighter models
- Higher 24,000 BTU capacity than standard 9,000-18,000 BTU units
- You need cooling for a large room up to 1,200 square feet
- You want a unit with a long compressor warranty
- You prefer inverter technology for consistent heating
- You only have a standard 115V outlet
- You need a compact unit for a small bedroom
- You want the highest possible energy efficiency rating
Verdict: COSTWAY 24000BTU Mini Split AC Heater offers robust capacity and a long warranty for large spaces. It suits buyers who prioritize heating power and compressor coverage over peak efficiency ratings.
Mountman 12000 BTU 230V Mini Split
Best for: medium rooms with 208-230V power
- Operating Modes
- Heating
- Cooling Capacity
- 12,000 BTU
- Coverage Area
- 750 sq ft
- SEER2 Rating
- 19
- Voltage
- 208/230V
- Smart Compatibility
- Remote
The Mountman 12000 BTU mini split offers 19 SEER2 efficiency on 208-230V power. It covers 750 square feet with inverter technology for steady cooling and heating. You get four fan speeds, sleep mode at 26dB, and self-cleaning functions. This system suits you if you need reliable year-round climate control for a medium-sized room without complex installation requirements.
- 19 SEER2 energy efficiency rating
- Covers up to 750 square feet
- Ultra-quiet 26dB sleep mode
- Inverter technology for steady performance
- Self-cleaning and auto-defrost functions
- 19 SEER2 is lower than the 20-22 SEER2 options on this list
- 12000 BTU capacity is smaller than the 18000-24000 BTU units available
- 208-230V voltage requires compatible electrical infrastructure
- You need efficient cooling and heating for a room up to 750 square feet
- You have a 208-230V electrical outlet available for installation
- You prioritize quiet operation with a 26dB sleep mode
- You require higher efficiency than 19 SEER2
- You need to cool a space larger than 750 square feet
- You only have a standard 115V electrical circuit
Verdict: Mountman 12000 BTU 19 SEER2 Mini Split is a solid choice for homeowners with 208-230V wiring who need reliable heating and cooling for a single room up to 750 square feet.
Senville LETO 9000 BTU 115V
Best for: small rooms with 120V power
- Operating Modes
- Heating
- Cooling Capacity
- 9000 BTU (0.75 Ton)
- Voltage
- 110/120V
- Smart Compatibility
- Alexa, app, remote control
- Features
- Inverter, Quiet Operation
- Control Method
- Voice Control
The Senville LETO is a 9,000 BTU mini split heat pump designed for 120V circuits. It offers heating down to 5°F and includes Alexa voice control. This wall-mounted unit features DC inverter technology for efficient temperature regulation. It comes with a 16ft line set and professional installation is required. This model suits smaller rooms where standard 208-230V systems are not feasible.
- Operates on standard 120V power
- Heats effectively down to 5°F
- Includes Alexa voice control
- DC inverter technology for efficiency
- Lower 9,000 BTU capacity compared to most 18,000 BTU options
- Requires professional installation only
- Heavier 25-pound indoor unit
- You have a 120V outlet available
- You need heating down to 5°F
- You want Alexa integration
- You require 18,000 BTU or higher
- You prefer 208-230V systems
- You want a DIY installation
Verdict: Senville LETO 9000 BTU 120V Mini Split is a solid choice for small spaces with 120V power. It provides reliable heating and smart control for users who do not need high-capacity cooling.
YITAHOME 12000 BTU 115V Mini Split
Best for: small rooms with standard 115V outlets
- Operating Modes
- Heating
- Cooling Capacity
- 12,000 BTU
- Coverage Area
- 750 sq ft
- SEER2 Rating
- 20
- Voltage
- 115V
- Smart Compatibility
- Alexa, Wi-Fi, remote
This YITAHOME mini split delivers 12,000 BTU of cooling and heating power on a standard 115V circuit. It achieves a 20 SEER2 rating, which indicates strong energy efficiency for its class. The unit covers up to 750 square feet and operates quietly at under 41 dB. You get smart control via Wi-Fi and Alexa compatibility. It is a practical choice for smaller spaces that need reliable year-round climate management without requiring high-voltage infrastructure.
- 20 SEER2 energy efficiency rating
- Standard 115V electrical connection
- Operates quietly at under 41 dB
- Covers areas up to 750 sq. ft.
- Includes Wi-Fi and Alexa voice control
- Lower 12,000 BTU capacity compared to many 18,000 BTU competitors on this list
- Single 115V voltage option limits use in high-power applications
- Indoor unit is 31.2 inches wide, which is bulkier than some 12,000 BTU alternatives
- You need a unit that runs on a standard 115V outlet
- You want to heat or cool a room up to 750 square feet
- You prefer smart control via Wi-Fi or voice assistants
- You require heating capacity above 12,000 BTU
- You only have 208-230V electrical circuits available
- You need a compact indoor unit under 30 inches wide
Verdict: YITAHOME 12000 BTU 115V Heat Pump fits homeowners with standard electrical setups who need efficient cooling and heating for smaller rooms. It is best for those prioritizing energy savings and smart features over raw power output.
Tehanld 12000 BTU Mini Split
Best for: standard 115V outlets and rooms under 750 sq ft
- Operating Modes
- Heating
- Cooling Capacity
- 12,000 BTU
- Coverage Area
- Up to 750 sq ft
- SEER2 Rating
- 17 SEER2
- Voltage
- 115V
- Smart Compatibility
- Remote control
This Tehanld mini split offers 12000 BTU cooling and heating for spaces up to 750 square feet. It runs on standard 115V power with a 17 SEER2 efficiency rating. The unit includes intelligent defrost technology and operates down to 5°F. You get five operating modes, four fan speeds, and a 24-hour timer. It ships with a 9.8-foot copper piping kit for professional installation.
- 12000 BTU capacity for medium-sized rooms
- 17 SEER2 energy efficiency rating
- Standard 115V electrical connection
- Includes 9.8 ft copper piping kit
- Operates in temperatures down to 5°F
- 17 SEER2 rating is lower than the 19-22 SEER2 ratings of most other picks
- 115V voltage limits use to standard outlets rather than 208-230V circuits
- 750 sq ft coverage is smaller than 18000 BTU models
- You need a 12000 BTU unit for a room under 750 square feet
- You only have standard 115V electrical outlets available
- You want a system that includes a copper piping kit
- You require higher efficiency ratings above 19 SEER2
- You need heating performance for spaces larger than 750 square feet
- You prefer 208-230V connections for commercial-grade power
Verdict: Tehanld 12000 BTU 115V Mini Split fits homeowners with standard 115V outlets who need moderate cooling for rooms up to 750 square feet.
COSTWAY Blast Pro 18000 BTU 230V
Best for: large rooms needing smart heating
- Operating Modes
- Heating
- Cooling Capacity
- 18000 BTU
- Coverage Area
- Up to 1250 sq ft
- SEER2 Rating
- 20 SEER2
- Voltage
- 208/230V
- Smart Compatibility
- Alexa, Google Assistant, Wi-Fi, remote
This COSTWAY 18000 BTU mini split handles heating and cooling for spaces up to 1,250 sq. ft. It runs on 208-230V power with a 20 SEER2 rating. You get Wi-Fi control, Alexa compatibility, and voice commands. The unit operates quietly at 28 dB and includes a self-clean function. It is a solid option for larger rooms needing efficient climate control.
- 20 SEER2 energy efficiency rating
- Covers up to 1,250 sq. ft.
- Wi-Fi and Alexa voice control
- Quiet operation at 28 dB
- 20 SEER2 is lower than the 22 SEER2 option on the list
- Requires 208-230V hardwired installation
- You need heating for a large room up to 1,250 sq. ft.
- You want voice control via Alexa
- You have a 208-230V electrical circuit available
- You only have a standard 115V outlet
- You prefer a higher efficiency rating like 22 SEER2
- You need a smaller unit for a tiny space
Verdict: COSTWAY 18000 BTU Mini Split fits large rooms where you need strong heating and smart voice control. It works best if you already have the required 208-230V wiring.
Temprium 18,000 BTU Mini Split AC
Best for: 230V homes needing quiet 18,000 BTU heating
- Operating Modes
- Heating
- Cooling Capacity
- 18000 BTU
- Coverage Area
- Up to 1250 sq ft
- SEER2 Rating
- 20 SEER2
- Voltage
- 230V
- Features
- Quiet Operation
The Temprium 18,000 BTU mini split offers 20 SEER2 efficiency on a 230V circuit. It covers up to 1,250 sq. ft. with DC inverter technology that adjusts compressor speed for steady temperature control. You get quiet operation at 28 dB, WiFi app control, and compatibility with Alexa or Google Assistant. The unit includes a backlit remote with seven operating modes and seven fan speeds for precise adjustments.
- 20 SEER2 energy efficiency rating
- Covers up to 1,250 sq. ft.
- Quiet operation at 28 dB
- WiFi app and voice control support
- Lower SEER2 rating than the 22 SEER2 competitor
- Heavier at 40.8 pounds than some lighter models
- You need a 230V unit for larger spaces
- You want quiet operation for a bedroom or office
- You prefer WiFi app control over standard remotes
- You only have a 115V outlet available
- You need the highest possible SEER2 rating on the list
- You are installing in a space smaller than 1,250 sq. ft.
Verdict: Temprium 18,000 BTU 20 SEER2 Mini Split suits you if you have a 230V circuit and need reliable heating for a 1,250 sq. ft. room with quiet, smart control.
DELLA Vario 12K BTU 23 SEER2
Best for: energy-efficient cooling and quiet heating
- Operating Modes
- Heating
- Cooling Capacity
- 12000 BTU (1 ton)
- Coverage Area
- Up to 550 sq ft
- SEER2 Rating
- 23 SEER2
- Voltage
- 208-230V
- Smart Compatibility
- Alexa, Wi-Fi, remote control
This 12,000 BTU mini split delivers cooling and heating for spaces up to 550 square feet. It achieves a 23 SEER2 rating on 208-230V power, making it one of the most efficient options in this guide. The unit operates quietly at 28 dBA and includes smart features like Alexa voice control and a remote sensor for precise temperature management. It is designed for professional installation and includes a full kit.
- 23 SEER2 energy efficiency rating
- Ultra-quiet 28 dBA operation
- Alexa voice control compatibility
- Remote sensor for accurate temperature reading
- Heating capability down to -4°F
- Lower heating capacity at 9.5 HSPF compared to higher-efficiency peers
- Heavier indoor unit at 61 pounds
- Requires professional installation and line-set vacuuming
- You need a highly efficient unit for a room up to 550 square feet
- You want quiet operation under 30 dBA
- You prefer voice control via Alexa
- You require a 115V plug-in model
- You need heating performance below -4°F
- You are looking for a DIY installation option
Verdict: DELLA Vario 12000 BTU 23 SEER2 Heat Pump suits buyers who prioritize energy savings and quiet performance in medium-sized rooms. It is a solid choice for those willing to pay for professional setup to secure top-tier efficiency.
Pioneer Diamante Pro 9000 BTU
Best for: small rooms needing cold-climate heating
- Operating Modes
- Heating
- Cooling Capacity
- 9,000 BTU
- Coverage Area
- 250 to 350 sq ft
- SEER2 Rating
- 20
- Voltage
- 230V
- Number of Zones
- Single zone
This 9,000 BTU heat pump operates on 230V power and delivers 20 SEER2 efficiency. It covers 250 to 350 square feet with variable-speed DC inverter technology. The unit includes a 16 ft installation kit and supports heating down to -4°F. Dual-axis airflow and I FEEL sensing adjust temperature near the remote. It is a solid choice for small, well-insulated rooms.
- 20 SEER2 cooling efficiency rating
- Heating operation down to -4°F
- Includes 16 ft installation kit
- Dual-axis motorized louvers for airflow
- I FEEL remote sensing technology
- 9,000 BTU capacity is lower than most competitors on this list
- 250 to 350 sq ft coverage is smaller than larger units
- App control requires a separately sold module
- You need a 230V system for a small room
- You want heating performance in cold climates
- You prefer a complete kit with line set included
- You require cooling for spaces over 350 square feet
- You need built-in Wi-Fi without extra hardware
- You are looking for higher BTU output
Verdict: Pioneer Diamante Pro 9000 BTU Mini Split suits owners of small rooms who need reliable cold-weather heating and a complete installation package. It fits users who value dual-axis airflow and do not need app control from the start.
DELLA Serena 12000 BTU 230V Mini Split
Best for: smart homes needing 12000 BTU efficiency
- Operating Modes
- Heating
- Cooling Capacity
- 12000 BTU
- Coverage Area
- Up to 550 Sq.Ft
- SEER2 Rating
- 22 SEER2
- Voltage
- 208V-230V
- Smart Compatibility
- Alexa, Google Home, Wi-Fi, remote
The DELLA Serena 12000 BTU mini split heat pump offers 22 SEER2 efficiency on a 230V circuit. It cools and heats spaces up to 550 sq ft. You get smart control via Alexa, Google Home, or the app. The unit runs quietly at 22 dBa in mute mode. It includes a 16.4ft installation kit and uses R32 refrigerant. This model is ideal for users seeking high efficiency and voice integration.
- 22 SEER2 energy efficiency rating
- Alexa and Google Home voice control
- Ultra-quiet 22 dBa operation in mute mode
- Works with DELLA app and geo-location
- Includes 16.4ft installation kit
- Lower 12000 BTU capacity than many 18000 BTU competitors
- Heavier 16.5 lb indoor unit compared to lighter models
- Requires professional installation and line-set vacuuming
- You want high SEER2 efficiency for a 12000 BTU unit
- You prefer voice control via Alexa or Google Home
- You need a 230V system for a 550 sq ft room
- You require heating performance below 5°F
- You need a 115V plug-in model without hardwiring
- You want a DIY installation without professional help
Verdict: DELLA Serena 12000 BTU Mini Split is a high-efficiency choice for those who value smart voice control and quiet operation in a medium-sized room.
MEPTY 18000 BTU 19 SEER2 Mini Split
Best for: medium rooms needing 230V heating
- Operating Modes
- Heating
- Cooling Capacity
- 18000 BTU
- Coverage Area
- Up to 1250 sq ft
- SEER2 Rating
- 19 SEER2
- Voltage
- 230V
- Smart Compatibility
- Remote control
The MEPTY 18000 BTU mini split provides cooling and heating for spaces up to 1,250 square feet. It operates on 230V power and carries a 19 SEER2 rating for energy efficiency. The unit features inverter technology to adjust compressor speed based on temperature needs. You get rapid cooling in 30 seconds and heating in 60 seconds. It includes a remote control and a 24-hour timer for scheduled operation.
- 18000 BTU capacity for medium to large rooms
- 19 SEER2 energy efficiency rating
- 230V voltage compatibility
- Inverter technology for variable speed operation
- 26 dB mute mode operation
- 19 SEER2 rating is lower than the 22 SEER2 Della Serena model on this list
- 18000 BTU capacity is smaller than the 24000 BTU options available from other brands
- 230V requirement limits use in standard 115V circuits without proper wiring
- You need a 18000 BTU unit for a 1,250 sq. ft. space
- You have a 230V electrical circuit available
- You want inverter technology for steady temperature control
- You require a higher SEER2 rating than 19
- You need a 24000 BTU unit for larger areas
- Your home only has 115V circuits available
Verdict: MEPTY 18000 BTU Mini Split AC/Heater fits users who need reliable 230V heating and cooling for medium-sized rooms. It offers solid efficiency for spaces that do not require the maximum capacity found in larger units.
ROVSUN 9000 BTU 20 SEER2 Mini Split
Best for: small rooms with standard 115V outlets
- Operating Modes
- Heating
- Cooling Capacity
- 9000 BTU
- Coverage Area
- up to 400 sq.ft.
- SEER2 Rating
- 20 SEER2
- Voltage
- 115V
- Smart Compatibility
- app, Alexa, Google Assistant, remote
This ROVSUN unit delivers 9,000 BTU of cooling and heating for spaces up to 400 square feet. It operates on a standard 115V circuit, making it accessible for many homes. The system features 20 SEER2 efficiency and inverter technology to adjust compressor speed. You can control it via remote, Wi-Fi app, or voice assistants like Alexa. The indoor unit weighs 70 pounds and measures 31.9 inches wide.
- 20 SEER2 energy efficiency rating
- 115V standard voltage operation
- Wi-Fi and voice control compatibility
- 28dB quiet operation in mute mode
- 9,000 BTU capacity is lower than most 18,000 BTU competitors
- 70-pound weight is heavier than lighter 12,000 BTU models
- 115V plug limits usage in regions requiring 208-230V
- You need a 9,000 BTU unit for a small room
- You only have a standard 115V electrical outlet
- You want Wi-Fi and voice control integration
- You require heating for a space larger than 400 sq.ft
- Your home only supports 208V or 230V circuits
- You prefer a lighter indoor unit under 60 pounds
Verdict: ROVSUN 9000 BTU 115V Mini Split suits small rooms where standard 115V power is available. It offers smart control and high efficiency for modest cooling needs.
Garvee 18000 BTU 19 SEER2 Mini Split
Best for: large rooms needing quiet heating and cooling
- Operating Modes
- Heating
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- Up to 1,250 sq ft
- SEER2 Rating
- 19
- Voltage
- 230V
- Smart Compatibility
- Remote, Wi-Fi, Alexa, Google Assistant
The Garvee 18000 BTU mini split offers heating and cooling for spaces up to 1,250 square feet. It operates on 230V power with a 19 SEER2 efficiency rating. You get a backlit LCD remote and smart app control. The unit runs quietly at 28dB in mute mode. It includes five operating modes for year-round comfort. This system suits you if you need reliable climate control for larger rooms or commercial spaces.
- 19 SEER2 energy efficiency rating for cost-effective operation
- Covers up to 1,250 square feet of floor space
- Ultra-quiet 28dB operation in mute mode
- Includes backlit LCD remote controller for easy adjustments
- Works with Alexa and Google Assistant for voice control
- 19 SEER2 is lower than the 22 SEER2 found in some competitors
- 230V voltage requirement limits compatibility with standard 115V outlets
- Indoor unit height of 34.5 inches is bulkier than compact 16.5-inch models
- You need heating and cooling for a large room up to 1,250 square feet
- You have a 230V electrical circuit available for installation
- You want quiet operation with a 28dB mute mode for bedrooms
- You only have standard 115V outlets and cannot install 230V wiring
- You need the highest possible energy efficiency and want 22 SEER2 or higher
- You have limited wall space and need a compact unit under 20 inches tall
Verdict: The Garvee 18000 BTU 19 SEER2 Mini Split provides strong heating and cooling capacity for large spaces. It fits you well if you prioritize quiet operation and smart home integration over peak energy efficiency ratings.
Specifications side by side
| Spec | Rellytech 18000 BTU 230V Mini Split | Albott 18k BTU 230V Mini Split | COSTWAY 24000 BTU 230V Mini Split | Mountman 12000 BTU 230V Mini Split | Senville LETO 9000 BTU 115V | YITAHOME 12000 BTU 115V Mini Split | Tehanld 12000 BTU Mini Split | COSTWAY Blast Pro 18000 BTU 230V | Temprium 18,000 BTU Mini Split AC | DELLA Vario 12K BTU 23 SEER2 | Pioneer Diamante Pro 9000 BTU | DELLA Serena 12000 BTU 230V Mini Split | MEPTY 18000 BTU 19 SEER2 Mini Split | ROVSUN 9000 BTU 20 SEER2 Mini Split | Garvee 18000 BTU 19 SEER2 Mini Split |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cooling Capacity | 18,000 BTU | 18,000 BTU | 24000 BTU | 12,000 BTU | 9000 BTU (0.75 Ton) | 12,000 BTU | 12,000 BTU | 18000 BTU | 18000 BTU | 12000 BTU (1 ton) | 9,000 BTU | 12000 BTU | 18000 BTU | 9000 BTU | 18,000 BTU |
| Coverage Area | Up to 1,250 sq. ft. | Up to 1,250 sq ft | up to 1500 Sq. Ft | 750 sq ft | – | 750 sq ft | Up to 750 sq ft | Up to 1250 sq ft | Up to 1250 sq ft | Up to 550 sq ft | 250 to 350 sq ft | Up to 550 Sq.Ft | Up to 1250 sq ft | up to 400 sq.ft. | Up to 1,250 sq ft |
| SEER2 Rating | 19 | 19 | 18.5 SEER2 | 19 | – | 20 | 17 SEER2 | 20 SEER2 | 20 SEER2 | 23 SEER2 | 20 | 22 SEER2 | 19 SEER2 | 20 SEER2 | 19 |
| Voltage | 208-230V | 208-230V | 208-230V | 208/230V | 110/120V | 115V | 115V | 208/230V | 230V | 208-230V | 230V | 208V-230V | 230V | 115V | 230V |
| Number of Zones | – | – | – | – | – | – | – | – | – | – | Single zone | – | – | – | – |
| Smart Compatibility | – | – | remote control | Remote | Alexa, app, remote control | Alexa, Wi-Fi, remote | Remote control | Alexa, Google Assistant, Wi-Fi, remote | – | Alexa, Wi-Fi, remote control | Remote | Alexa, Google Home, Wi-Fi, remote | Remote control | app, Alexa, Google Assistant, remote | Remote, Wi-Fi, Alexa, Google Assistant |
| Operating Modes | Cooling, heating, fan, dry | Cooling, heating, dehumidifying, fan | auto, cool, dry, heat, fan | Cool, Heat, Dry, Fan | AC, heat pump, dehumidifier, fan | Auto, Cooling, Drying, Heating, Fan | Cool, Heat, Auto, Fan, Dry | Auto, cool, heat, dry, fan, ECO, sleep | Auto, Cool, Heat, Dry, Fan, Sleep, ECO | – | Cooling, Heating, Dry, Fan | Heating, cooling, auto, dry | Cooling, heating, fan, dehumidifying | cooling, heating, dehumidification | Cool, Fan, Dry, Heat, Auto |
| Room | – | Offices | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Features | Inverter | Inverter | Inverter | Inverter | Inverter, Quiet Operation | Inverter, Cover | Inverter | Inverter | Quiet Operation | Inverter | Inverter, Quiet Operation | Inverter | Inverter | Inverter | Remote, Quiet Operation |
| Control Method | – | – | – | – | Voice Control | Wi-Fi, Wi-Fi App Control, Wi-Fi App, Voice Control | – | Wi-Fi, Wi-Fi App Control, Wi-Fi App, Voice Control | Wi-Fi, Wi-Fi App Control, Wi-Fi App | Wi-Fi, Wi-Fi App Control, Wi-Fi App, Voice Control | – | Wi-Fi, Wi-Fi App Control, Wi-Fi App, Voice Control | – | Wi-Fi, Wi-Fi App Control, Wi-Fi App | Remote Control |
| Room Type | – | Office | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Color | White | White | White | – | White | White | White | White | White | White | White | White | – | White | White |
| Operating Mode | – | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater |
| SEER Rating | 19 SEER2 | 19 SEER2 | – | 19 SEER2 | – | 20 SEER2 | 17 SEER2 | 20 SEER2 | 20 SEER2 | – | 20 SEER2 | – | 19 SEER2 | 20 SEER2 | 19 SEER2 |
| Mounting Type | – | – | Wall-Mounted | – | Wall-Mounted | – | – | – | – | – | Wall-Mounted | – | – | – | – |
| Use | – | Home Office | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Dimensions | 12.4 × 39.6 × 9.5 inches | 37.8 × 8.74 × 12.4 inches | 9 × 44.5 × 13 inches | 8.23 × 32.3 × 11.9 inches | 9 × 37 × 12 inches | 7.9 × 31.2 × 11.5 inches | 7.48 × 31.5 × 11.4 inches | 7.68 × 35.8 × 12 inches | 8.74 × 37.8 × 12.4 inches | 8.07 × 31.9 × 11.5 inches | 8 × 31.9 × 11.5 inches | 7.87 × 30.2 × 11.8 inches | 9.02 × 40.4 × 12.6 inches | 7.99 × 31.9 × 11.5 inches | 35 × 29.1 × 34.5 inches |
| Weight | 112 pounds | 151 pounds | 68 pounds | – | 25 pounds | 22 pounds | 20.9 pounds | 20.9 pounds | 40.8 pounds | 61 pounds | – | 16.5 pounds | – | 70 pounds | – |
| Size | 18000BTU,230V,19 SEER2 | 19 SEER2, 18,000BTU 208-230V | 24000BTU, 208-230V, 18.5 SEER | 12000-208/230 | 9000 BTU 110/120V | – | 115V-12000BTU | – | 18,000 BTU, 230V, 20 SEER2 | 12,000 BTU – 230V / 23 SEER2 | 250~350 sq ft | 12,000 BTU 230V – 22 SEER2 | 18000-230 | 8.07"D x 31.92"W x 11.49"H | 18K-230V-19 SEER2 – I Panel |
| Model | CE0-1 | SAC011 | 10153-CYJV | 12000BTU-230V | SENL-09CD-16 | MAYIH4qu0k | 0745-S120-4 | Blast Pro | SAC002-A-18KWH-US | TL-12K2VB-23S-I+O | Diamante | 12K2VR-22S-M-I+O | – | RV09T1/20-I/RV09T1/20-O | Rh-13d95F9z4r-fv0gbynAGu79 |
If you need different heating metrics, you can compare albott mini split air conditioner alternatives for other BTU ratings.
How to Choose the Right Mini Split
Match Voltage to Your Circuit
Check your electrical panel before buying. Most units require either 115V or 230V power. Standard outlets provide 115V, which suits smaller units like the Senville LETO 9000 BTU. Larger models need 230V circuits, such as the Rellytech 18000 BTU. Using the wrong voltage can damage the unit or prevent it from starting. Verify your home wiring matches the spec sheet exactly. This step prevents costly electrical upgrades or installation failures later.
Size the Unit for Your Room
BTU ratings determine heating capacity. A 9,000 BTU unit, like the Pioneer Diamante Pro, covers small spaces around 250 to 350 square feet. Medium rooms up to 750 square feet work well with 12,000 BTU models. Large areas near 1,250 square feet need 18,000 BTU or 24,000 BTU units. The COSTWAY 24000 BTU offers robust capacity for bigger spaces. Oversized units cycle too often. Undersized units run constantly without reaching your target temperature. Match the BTU to your square footage.
Check Smart Control Compatibility
Decide if you want app or voice control. Some models support Wi-Fi and Alexa integration, like the YITAHOME 12000 BTU. Others rely on a physical remote, such as the Garvee 18000 BTU. Voice control allows hands-free operation. App control lets you adjust settings from your phone. If you prefer simplicity, a remote-only model may be better. Check the control method in the attributes. Ensure your smart home ecosystem supports the required platform before purchasing.
Compare SEER2 Efficiency Ratings
SEER2 measures cooling efficiency, which impacts long-term costs. Higher numbers indicate better energy savings. The DELLA Vario 12K BTU offers a top rating of 23 SEER2. The YITAHOME 12000 BTU provides 20 SEER2. Lower ratings, like the 17 SEER2 on the Tehanld model, may use more electricity. While heating efficiency varies, the SEER2 score helps you compare operational costs across brands. Select a higher rating if you plan to run the unit frequently.
Consider Inverter Technology Benefits
Most modern mini splits use inverter compressors. This technology adjusts speed rather than cycling on and off. It provides steadier temperatures and quieter operation. All listed models feature inverter technology. This ensures consistent heating performance without sudden temperature drops. Inverter units also tend to be more energy-efficient than non-inverter models. Look for the inverter label in the features section. It is a standard benefit across this guide’s selections.
Frequently asked questions
Which mini split is best for small rooms with standard outlets?
The Senville LETO 9000 BTU 115V Mini Split is designed for small spaces with standard 120V power. It features voice control compatibility with Alexa and quiet operation. The unit weighs only 25 pounds, making it a lightweight option for smaller areas that do not require high-capacity heating.
Do I need a 230V circuit for larger rooms?
Yes, larger rooms generally require 230V units for adequate heating capacity. The Rellytech 18000 BTU 230V Mini Split covers 1,250 square feet effectively. This voltage supports higher BTU outputs, ensuring consistent performance in medium to large spaces compared to standard 115V models.
Which model offers the highest energy efficiency?
The DELLA Vario 12K BTU 23 SEER2 Heat Pump leads in efficiency with a 23 SEER2 rating. High SEER2 scores indicate better energy savings over time. This model also includes voice control and is designed for quiet heating in medium-sized rooms.
Can I control my mini split with my phone?
Several models support smart control via Wi-Fi apps or voice commands. The YITAHOME 12000 BTU 115V Mini Split includes Wi-Fi app control and Alexa compatibility. The COSTWAY Blast Pro 18000 BTU 230V also offers these features for remote management of your heating and cooling.
What is the lightest mini split on this list?
The DELLA Serena 12000 BTU 230V Mini Split is the lightest at 16.5 pounds. It is a compact unit suitable for smart homes needing efficient heating. Its low weight makes installation easier compared to heavier, high-capacity models like the Albott 18k BTU.
Which mini split is best for offices?
The Albott 18k BTU 230V Mini Split is ranked for medium offices with 208-230V power. It provides solid efficiency and covers 1,250 square feet. This model is built for reliable daily business use, offering heating and cooling for dedicated office environments.
Is there a mini split with a remote control?
The Garvee 18000 BTU 19 SEER2 Mini Split includes a remote control feature. It is designed for large rooms needing quiet heating and cooling. This model prioritizes quiet operation and smart home integration while providing strong capacity for spaces up to 1,250 square feet.