Choosing the perfect mini split AC for a small room can greatly improve comfort while saving energy. This article reviews the best mini split air conditioners designed to efficiently cool and heat small spaces up to 750 sq. ft., featuring inverter technology, heat pumps, and quiet operation. Below is a summary table of the top models we’ve selected based on performance, energy efficiency, features, and ease of installation.
| Product Name | Cooling Capacity | Heating | Energy Efficiency (SEER) | Room Coverage | Smart Features |
|---|---|---|---|---|---|
| COSTWAY 12000BTU Mini Split AC & Heater | 12,000 BTU | Yes, Heat Pump | 20 SEER2 | Up to 750 sq. ft. | Remote Control |
| ROVSUN 9000 BTU WiFi Enabled Mini Split AC & Heater | 9,000 BTU | Yes, Heat Pump | 19 SEER2 | Up to 400 sq. ft. | WiFi, Voice Control |
| Manastin 12000BTU Mini Split AC & Heater | 12,000 BTU | Yes, Heat Pump | 19 SEER2 | Up to 750 sq. ft. | Remote Control |
| hykolity WiFi Enabled 12000 BTU Mini Split AC & Heater | 12,000 BTU | Yes, Heat Pump | 19 SEER2 | Up to 750 sq. ft. | WiFi, Energy Saving Modes |
| Della 24000 BTU Mini Split AC with Alexa Support | 24,000 BTU | Yes, Heat Pump | 19 SEER2 | Up to 1500 sq. ft. | Alexa, Smart Functions |
COSTWAY 12000BTU Mini Split Air Conditioner & Heater
The COSTWAY 12000BTU mini split AC features a high-power compressor and a 1-ton heat pump delivering energy-efficient cooling and heating. The AHRI certified unit operates with innovative inverter technology that adjusts frequency to reduce power consumption and extend equipment lifespan.
This model offers five working modes: auto, cool, dry, heat, and fan, and four fan speeds to adapt to different comfort needs throughout the year. Additional features include sleep mode, ECO mode, turbo function, and iFEEL technology for precise room temperature control.
Easy control is facilitated via remote, with a quiet operation ensuring peaceful sleep. The remote’s display automatically turns off after 10 seconds of inactivity to avoid disturbing your rest.
ROVSUN 9000 BTU WiFi Enabled Mini Split AC & Heater
The ROVSUN 9000 BTU mini split air conditioner provides powerful cooling and heating for small rooms up to 400 sq. ft. Its heat pump and dehumidification modes offer year-round comfort across a temperature range of 61°F to 88°F.
Designed with advanced inverter technology, it yields a high 19 SEER2 rating, which dynamically adjusts compressor speed to save up to 35% energy. Operating at an ultra-quiet 28 dB in mute mode, this model ensures a peaceful indoor environment.
WiFi capabilities enable remote control via a mobile app with compatibility for Alexa and Google Assistant, enhancing user convenience and modern smart home integration.
Manastin 12000BTU Mini Split AC & Heater with Inverter
The Manastin 12000BTU mini split AC offers efficient cooling and heating for rooms up to 750 sq. ft. Equipped with a 1-ton heat pump and inverter technology, it maintains comfortable temperatures throughout the year while optimizing energy use.
This unit uses the eco-friendly R32 refrigerant, reducing environmental impact. It features multiple operational modes—cooling, heating, auto, fan, dry—and four fan speed settings, backed by a 24-hour timer, sleep mode, Eco mode, and Turbo Boost for quick climate adjustments.
The included installation kit streamlines setup, and the unit’s versatility makes it suitable for a range of small living spaces.
hykolity WiFi Enabled 12000 BTU Mini Split AC & Heater
The hykolity 12000 BTU mini split system offers quick, energy-efficient cooling and heating for spaces up to 750 square feet. Its inverter compressor and built-in 1-ton heat pump adapt power consumption to your needs while delivering temperature control from 61°F to 88°F.
This model enhances comfort with whisper-quiet operation, 4D airflow, and I Feel mode, allowing you to customize air direction and temperature sensing. Smart features include WiFi control, multiple fan speeds, turbo function, eco mode, and auto defrost to optimize efficiency and extend equipment life.
Its AHRI certification and 19 SEER2 rating ensure strong energy savings without compromising performance.
Della 24000 BTU Mini Split AC with Alexa Support
The Della 24000 BTU mini split air conditioner is designed for larger small rooms or combined areas up to 1500 sq. ft. This ductless system features a high-capacity 2-ton heat pump and ETL, AHRI certifications ensuring reliable, energy-efficient operation.
It works effectively even in cold temperatures as low as -4°F and includes a full installation kit. Smart functions include Alexa voice compatibility, 4D airflow control, multiple operating modes (auto, heat, cool, dry, fan), sleep and eco modes, and turbo boost functions to deliver optimal comfort year-round.
The 19 SEER2 rating ensures up to 30% power savings compared to traditional systems, making it an economical choice for energy-conscious users.
Buying Guide for Mini Split ACs for Small Rooms
When selecting a mini split AC unit for a small room, several factors ensure the right balance of performance, comfort, and efficiency.
Cooling Capacity and Room Size
Choose a unit with appropriate BTU capacity based on the room size. Generally, 9,000 to 12,000 BTU units efficiently cool rooms between 400 to 750 square feet. Oversized systems may cycle frequently causing inefficiency, while undersized units will struggle to maintain temperature.
Energy Efficiency Ratings (SEER)
Look for units with high SEER (Seasonal Energy Efficiency Ratio) ratings. Higher SEER ratings mean better energy savings. Modern mini splits often feature ratings between 17 SEER to over 20 SEER2. Efficient inverter technology also improves operation by adjusting compressor speed automatically.
Heating Functionality
Many mini splits include heat pumps for year-round use. This eliminates the need for an additional heating source in mild to moderate climates. Check the heat pump capacity and operating temperature ranges to ensure effective heating during cold weather.
Installation and Kit Availability
Complete installation kits simplify setup, especially for DIY enthusiasts. Kits typically include copper tubing, wiring, and drainage pipes. However, professional installation is recommended for safety and optimal performance.
Noise Level
Look for models with quiet operation, especially if the unit will be installed in bedrooms or offices. Units operating around 28 to 40 dB offer peaceful environments without disruption.
Smart Features and Controls
Remote controls are standard, but WiFi connectivity and voice assistant compatibility (Alexa or Google Assistant) add convenience and deeper control options. Features like timers, sleep modes, and adaptive sensors enhance comfort while saving energy.
Refrigerant Type and Environmental Impact
Modern mini split ACs often use the environmentally friendly R32 refrigerant with lower global warming potential (GWP). Consider units using R32 over older refrigerants to minimize environmental footprint.
By balancing these criteria, you can select the ideal mini split air conditioner and heater tailored for your small room, optimizing personal comfort and energy savings.