Finding the best mini split air conditioner means balancing performance, efficiency, and ease of use. The Costway 11500 BTU stands out as the overall top pick for its combination of features and affordability. For those prioritizing energy savings, the 12,000 BTU Ductless Mini Split with 19 SEER2 offers exceptional efficiency. Meanwhile, the MRCOOL 12000 BTU is ideal for DIY installation enthusiasts thanks to its straightforward setup. But every model makes different tradeoffs—some excel in features, others in cost or ease of installation. Continue reading for a detailed breakdown to help you find the best fit for your space and needs.
Key Takeaways
- The best mini split units balance energy efficiency with cooling capacity for their size.
- Wi-Fi enabled models offer smart control but often come at a higher price point.
- Most top picks provide heating as well as cooling, making them versatile for year-round use.
- Ease of installation varies significantly—DIY-friendly models are available but may have tradeoffs in capacity or features.
- Higher SEER ratings typically mean better long-term savings, despite higher upfront costs.
More Details on Our Top Picks
COSTWAY 11500 BTU Mini Split Air Conditioner, 115V 17 SEER2 Wi-Fi Enabled Inverter System with Heater, Includes Installation Kit
This model stands out for its robust combination of cooling and heating capacity, making it a strong choice for year-round comfort in spaces up to 750 sq. ft. compared to the Garvee 11500 BTU, which emphasizes quiet operation and multiple modes but lacks Wi-Fi integration. The COSTWAY’s inverter technology ensures energy efficiency and consistent temperature control, though it involves a higher upfront cost and requires professional installation, which could be a barrier for DIY enthusiasts. Its compatibility with Alexa and Google Assistant adds convenience, but regular maintenance is necessary to keep it running smoothly. This pick makes the most sense for those who want a flexible, smart climate solution that can handle both heating and cooling in a medium-sized space.
Pros:- Energy-efficient inverter technology for lower operating costs
- Wi-Fi and voice control compatibility for convenience
- Heats and cools spaces up to 750 sq. ft
Cons:- Requires professional installation, adding to initial cost
- Potentially higher upfront expense due to advanced features
Best for: Homeowners seeking a smart, all-in-one climate control system for large living areas
Not ideal for: DIYers or budget-conscious buyers who prefer simpler units without installed costs
- Cooling Capacity:11500 BTU
- Voltage:115V
- SEER2:17
- Coverage Area:750 sq. ft
- Refrigerant:R32
- Wi-Fi Enabled:Yes
Bottom line: This system is ideal for those who want a flexible, connected unit capable of handling larger spaces with year-round comfort.
12,000 BTU Ductless Mini Split Air Conditioner with Heat Pump, 19 SEER2, 115V, Energy Efficient for Up to 750 sq.ft
This unit offers a high 19 SEER2 rating, which translates into lower energy bills compared to the Garvee 11500 BTU, making it appealing for budget-conscious consumers focused on long-term savings. Its smart remote control, multiple modes, and temperature range from 61°F to 88°F give it versatility, but like the COSTWAY, it requires professional installation to ensure proper setup. The 115V operation limits placement options somewhat, especially in larger or older homes. Compared with the MRCOOL Easy Pro, which emphasizes DIY ease, this model’s professional install requirement might be a barrier for some. It’s best suited for those prioritizing efficiency and smart features in a space up to 750 sq. ft.
Pros:- Exceptional energy efficiency with 19 SEER2 and 8.5 HSPF2 ratings
- Smart remote control with multiple modes for customized comfort
- Suitable for spaces up to 750 sq. ft
Cons:- Installation may require professional assistance
- Limited to 115V power, restricting placement options
Best for: Eco-conscious homeowners wanting a high-efficiency system with remote control
Not ideal for: Renters or DIYers who prefer units that are easier to install without professional help
- Cooling Capacity:12000 BTU
- Heating Capacity:12500 BTU
- SEER2:19
- HSPF2:8.5
- Voltage:115V
- Coverage Area:up to 750 sq.ft
Bottom line: This model suits buyers focused on maximizing energy savings and smart control in a medium-sized space.
MRCOOL 12000 BTU Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series
This system makes the list for its DIY-friendly design, enabling installation in spaces up to 550 sq. ft, which is more limited compared to the 750 sq. ft units. Its inverter technology ensures efficient operation, but the smaller coverage makes it less suitable for larger rooms like the COSTWAY or Garvee models. The sleek look and quiet operation make it ideal for home or office environments, yet proper installation is essential to avoid performance issues. Compared with the Garvee, which covers larger areas, the MRCOOL offers more flexibility for DIYers willing to handle installation. It’s best for smaller rooms where ease of setup outweighs size capacity.
Pros:- Easy DIY installation reduces setup costs and time
- Energy-efficient operation for year-round comfort
- Quiet operation and modern design blend into interiors
Cons:- Limited to 550 sq. ft, less suitable for larger rooms
- Requires proper installation to ensure optimal performance
Best for: DIY enthusiasts wanting reliable heating and cooling in small to medium rooms
Not ideal for: Users needing coverage beyond 550 sq. ft or preferring professional installation for larger spaces
- BTU:12000
- Voltage:115V
- Coverage Area:550 sq. ft
- Type:Ductless Mini Split
- Features:Heating and Cooling, Energy Efficient, Quiet Operation
Bottom line: This unit is perfect for small spaces where DIY installation and efficiency are priorities over capacity.
Garvee 11500 BTU Mini Split AC/Heating System, WiFi Enabled, Energy Efficient, Wall-Mounted, Cools Up to 750 Sq.Ft
The Garvee system offers a balanced mix of features, including Wi-Fi connectivity, multiple modes, and quiet operation, making it appealing for those who want smart control without a hefty price tag. Compared with the COSTWAY, it emphasizes affordability but may lack some of the advanced inverter technology and heating versatility. Its environmentally friendly R32 refrigerant and quiet operation make it suitable for bedrooms and living rooms, although the professional installation requirement could be a hurdle for some. This unit makes sense for budget-conscious buyers who still want reliable, smart climate control within a 750 sq. ft. space.
Pros:- Energy-efficient with eco-friendly R32 refrigerant
- Multiple modes and adjustable fan speeds for tailored comfort
- Wi-Fi enabled for remote control and scheduling
Cons:- Requires professional installation
- Limited to indoor use only and certain maximum hose length
Best for: Budget-conscious homeowners seeking a Wi-Fi-enabled, reliable climate control system
Not ideal for: Renters or those who want units with DIY installation options or higher capacity
- BTU:11500
- Voltage:115V
- Cooling Area:750 sq.ft
- Refrigerant:R32
- Modes:Auto, Cool, Heat, Dry, Fan, Sleep, ECO
- Remote Features:I FEEL, 4D auto swing
Bottom line: This system offers smart features and energy efficiency at a friendly price point for medium-sized spaces.
12000 BTU Mini Split AC/Heating System, 19 SEER2, Ductless Inverter, Energy Efficient, Cools Up to 750 Sq.Ft
This model delivers impressive energy savings thanks to its 19 SEER2 inverter technology, making it a strong choice for those prioritizing long-term efficiency. Unlike the Senville LETO Series, which offers higher SEER (20.8), it balances high performance with a quieter operation at 26dB during sleep mode. Its flexible modes—including dry and fan—allow for personalized comfort, but installation may require professional help, especially since it’s limited to spaces up to 750 sq.ft. The initial setup can be complex for some, and its focus on energy efficiency might mean slightly higher upfront costs. Overall, this system is best for consumers who want a quiet, energy-efficient solution without the need for extensive smart features.
Pros:- Inverter technology reduces power consumption significantly
- Very quiet operation ideal for bedrooms
- Includes self-cleaning and auto-defrost for low maintenance
Cons:- Installation complexity may require professional help
- Limited to spaces up to 750 sq.ft
Best for: Homeowners seeking an energy-efficient, quiet mini split for small to medium rooms up to 750 sq.ft.
Not ideal for: Buyers who prefer smart home integrations or higher SEER ratings for maximum efficiency.
Bottom line: This system suits those prioritizing energy savings and quiet operation in medium-sized spaces.
12000 BTU Mini Split Air Conditioner & Heater, 17 SEER2, 115V Wall-Mounted Unit for Rooms up to 750 sq. ft, Energy Efficient Inverter with Heat Pump
Compared with the 12000 BTU Mini Split AC/Heating System, 19 SEER2, this unit offers a slightly lower SEER rating but includes a heat pump, providing reliable heating down to 5°F. Its 17 SEER2 efficiency still delivers good energy savings, and the inverter technology keeps it quiet, making it suitable for bedrooms or small offices. The need for professional installation and the potential delay with two separate boxes arriving are drawbacks, especially for those expecting a simple setup. If you need a dependable all-season unit that covers small to medium rooms, this option delivers consistent performance with a focus on heating capability.
Pros:- Includes heating function down to 5°F
- Quiet operation suitable for bedrooms
- Inverter technology for energy savings
Cons:- Requires professional installation, adding cost
- Possible coordination needed with two shipment packages
Best for: Homeowners needing a combined cooling and heating system for small to medium rooms, especially in colder climates.
Not ideal for: Buyers seeking the highest efficiency or DIY installation options without professional help.
Bottom line: This model is best for those wanting an all-in-one system with reliable heat in addition to cooling.
DELLA Econo Series 23000 BTU Mini Split Air Conditioner 17 SEER2 with Heat Pump and WiFi
Compared to smaller units like the Senville LETO Series, the DELL Econo Series offers a much higher capacity at 23,000 BTU, making it suitable for larger areas up to 1500 sq.ft. Its 17 SEER2 rating balances energy efficiency with powerful cooling and heating, and the inclusion of WiFi and smart controls adds convenience. However, its larger size and higher capacity mean it’s overkill for small rooms, and professional installation is a must, increasing upfront costs. The full installation kit simplifies setup, but the system’s size and complexity are better suited for larger residential or commercial spaces that need robust climate control.
Pros:- High capacity suitable for large areas
- Smart controls including WiFi and Alexa compatibility
- Includes full installation kit for convenience
Cons:- Requires professional installation
- Overpowered for small rooms, potentially wasting energy
Best for: Commercial spaces or large homes needing powerful, smart-controlled climate management over 1500 sq.ft.
Not ideal for: Small apartments or users seeking a compact, easy-to-install mini split for limited spaces.
Bottom line: Ideal for large, smart-enabled spaces where powerful heating and cooling are required.
Senville LETO Series Mini Split Air Conditioner Heat Pump, 12000 BTU, 1 Ton, White
The Senville LETO Series combines high efficiency with a sleek design, making it appealing for style-conscious buyers. With a 20.8 SEER rating, it outperforms many competitors in energy savings, and its Alexa compatibility adds modern convenience. Its 12000 BTU capacity suits small to medium rooms up to 750 sq.ft., but the 25 ft refrigerant line limit means careful planning is necessary during installation. While professional help is required, its comprehensive kit and smart features make it a solid choice for those wanting seamless remote control and voice commands. Compared to less stylish or less connected models, this unit emphasizes convenience and aesthetics.
Pros:- Alexa-enabled for voice control
- High 20.8 SEER rating for efficiency
- Includes full installation kit and stylish design
Cons:- Professional installation required
- Limited refrigerant line length (up to 25 ft)
Best for: Design-conscious homeowners seeking smart, efficient climate control with voice command features.
Not ideal for: Buyers without access to professional installation or those needing longer refrigerant lines beyond 25 ft.
Bottom line: This system is best for those wanting a stylish, smart, and energy-efficient climate solution for medium-sized spaces.
How We Picked
I evaluated these mini split air conditioners based on their cooling and heating performance, energy efficiency ratings, ease of installation, build quality, and value for money. Priority was given to models that offer reliable operation in various room sizes, smart features like Wi-Fi, and positive user feedback. The rankings reflect a balance between features, price, and user experience, ensuring that each product serves a distinct buyer need—from budget-conscious shoppers to tech-savvy homeowners. This approach helps identify which units deliver the best overall performance and the best bang for the buck.Factors to Consider When Choosing Best Mini Split Air Conditioner
Choosing the right mini split air conditioner involves considering several key factors that impact long-term satisfaction and performance. Beyond just cooling capacity, it’s important to evaluate energy efficiency, installation complexity, and additional features like Wi-Fi control. Making a sound choice requires understanding these broader considerations to avoid common pitfalls and ensure your system meets your specific needs.Cooling and Heating Capacity
Matching the unit’s capacity to your room size is crucial for effective climate control. An undersized system won’t cool adequately, while an oversized one may cycle on and off too frequently, wasting energy. Look for models rated for your space—most work well in rooms up to 750 sq. ft., but larger or irregularly shaped areas might need more capacity. Consider units that provide both cooling and heating if you want year-round comfort, paying attention to their BTU ratings.
Energy Efficiency Ratings
SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) ratings indicate how efficiently a mini split consumes power. Higher ratings typically mean lower utility bills over time, but they often come with a higher upfront cost. Choosing a model with at least 17 SEER can save money in the long run, especially if you plan to run it frequently. Keep in mind that the efficiency ratings matter most in moderate climates where the unit will operate regularly.
Ease of Installation
Some mini splits are designed for straightforward DIY installation, while others may require professional help. Features like pre-charged lines and detailed instructions can make setup easier and less costly. However, models that are easier to install might have fewer advanced features or slightly lower capacity. Evaluate your comfort with electrical work and whether you’re willing to invest in professional installation to ensure optimal performance and warranty coverage.
Smart Features and Controls
Wi-Fi connectivity and smartphone apps add convenience, allowing you to control your system remotely. These features are especially useful for adjusting settings on the go or creating schedules. However, smart features can increase the initial price and sometimes introduce compatibility issues with certain smart home systems. Decide if remote control and automation are worth the additional investment based on your tech preferences and lifestyle.
Brand Reputation and Support
Opting for reputable brands with good customer service and warranty support can save headaches later. Well-known manufacturers tend to have more reliable products and easier access to replacement parts. Cheaper or lesser-known brands may cut costs upfront but could pose challenges in service and durability. Checking user reviews and warranty terms helps ensure your investment lasts and performs as expected.
Frequently Asked Questions
Can I install a mini split system myself?
Many mini split systems are marketed as DIY-friendly with pre-charged lines and detailed instructions. However, proper installation requires electrical knowledge and understanding of refrigerant handling, which can be complex and potentially dangerous if done improperly. For most homeowners, hiring a professional ensures correct setup, compliance with warranty conditions, and optimal performance. If you’re comfortable with DIY projects and follow all safety procedures, some models may be suitable for self-installation—just be sure to verify the manufacturer’s recommendations.
Are mini split systems noisy?
Most modern mini splits operate quietly, with indoor units typically making less noise than a normal conversation. Noise levels vary by model, so checking decibel ratings is helpful. Higher-end units often feature noise-reduction technology, making them suitable for bedrooms or quiet spaces. Keep in mind that installation quality can also affect noise levels—properly mounted units reduce rattling and vibration, contributing to quieter operation.
How much does professional installation cost?
Professional installation for a mini split system usually ranges from $500 to $2,000, depending on the complexity and your home’s specific setup. Factors influencing cost include the number of indoor units, distance between outdoor and indoor components, and the need for electrical upgrades. Investing in professional installation helps ensure correct refrigerant charging and system operation, which can extend the lifespan and efficiency of your unit. Some brands include free or discounted installation as part of their purchase packages, so it’s worth comparing options.
What’s the typical lifespan of a mini split air conditioner?
With proper maintenance, mini split systems generally last between 12 and 20 years. Regular cleaning of filters, coil inspections, and professional servicing can prolong their lifespan. Higher-quality units from reputable brands tend to be more durable and maintain efficiency longer. Keep in mind that components like the compressor and indoor fan motors may require replacement over time, but warranty coverage can mitigate repair costs during the early years.
Do mini splits work well in extremely cold climates?
Many modern mini splits are equipped with cold climate technology, allowing them to operate efficiently even at temperatures well below freezing. However, performance can vary based on the model and brand. For very cold environments, look for units specifically rated for low ambient temperatures and consider models with enhanced defrost features. In extremely harsh winters, supplementing with a backup heating system might be necessary to maintain consistent comfort.
Conclusion
For most homeowners seeking a reliable all-around performer, the Costway 11500 BTU offers excellent value with smart features and solid performance. Budget-conscious buyers should consider models like the 12,000 BTU Ductless Mini Split with 19 SEER2 for energy savings. Those wanting a premium experience or advanced smart controls might prefer the DELLA Econo Series 23000 BTU for its higher capacity and Wi-Fi integration. Beginners or DIY enthusiasts will find the MRCOOL 12000 BTU particularly accessible, while users in colder climates should select units rated for low temperatures. Each option serves a specific need, making it easier to find a mini split that matches your space and budget.
