Searching for the best SEER mini split can be challenging with so many options available. SEER (Seasonal Energy Efficiency Ratio) is crucial for both cooling performance and long-term energy savings. In this guide, explore leading mini split systems with high SEER ratings, their features, and what sets them apart. Whether you’re outfitting a bedroom, garage, or commercial space, this roundup highlights highly rated models to help you make an informed, energy-smart decision.
| Product | Image | SEER | BTU | Notable Features |
|---|---|---|---|---|
| Cooper & Hunter Sophia Series |  |
25 | 9,000 | Smart Control, -13°F Heating, Whisper Tech |
| ROVSUN 9000 BTU 19 SEER Inverter Plus |  |
19 | 9,000 | Ultra Quiet, Energy Saving, Heat Pump |
| ROVSUN 9000 BTU WiFi Mini Split |  |
19 (SEER2) | 9,000 | WiFi, Fast Heating/Cooling, Dehumidification |
| Cooper & Hunter Mia Series 18,000 BTU |  |
19 | 18,000 | Large Coverage, Smart Control, Pre-Charged |
| Senville LETO Series 9000 BTU |  |
21.5 (SEER2) | 9,000 | Works with Alexa, 4-in-1, Turbo |
| YITAHOME 12,000 BTU Mini Split WiFi |  |
20 (SEER2) | 12,000 | Alexa, Health Mode, 5 Modes |
Content Navigation
- Cooper & Hunter Sophia Series 9,000 BTU 25 SEER Mini Split
- ROVSUN 9000 BTU 19 SEER Ductless Mini Split
- ROVSUN 9000 BTU WiFi Mini Split AC & Heater
- Cooper & Hunter Mia Series 18,000 BTU Ductless Mini Split
- Senville LETO Series 9000 BTU 21.5 SEER Mini Split
- YITAHOME 12,000 BTU 20 SEER2 WiFi Mini Split
- Buying Guide: How To Choose The Best SEER Mini Split
Cooper & Hunter Sophia Series 9,000 BTU 25 SEER Mini Split
The Cooper & Hunter Sophia Series 9,000 BTU mini split system is renowned for its impressive 25 SEER efficiency, making it one of the highest SEER options for homeowners who prioritize energy saving. Designed as a single-zone, wall-mount ductless unit, it is suitable for spaces such as bedrooms, additions, and living rooms.
This model includes a smart port adapter, allowing you to control settings like temperature and fan speed from your smartphone via the C&H Remote mobile app. The whisper-quiet operation ensures minimal disturbance, which is ideal for nighttime or home office use. The system can heat efficiently even in ambient temperatures as low as -13°F, providing year-round comfort.
Certified by ETL Intertek and AHRI, the Sophia Series runs on 115V and comes with a 16ft installation kit, facilitating a straightforward setup process. Its advanced inverter technology ensures both rapid cooling and heating, meeting the needs of various residential and commercial applications while helping to reduce utility costs.
ROVSUN 9000 BTU 19 SEER Ductless Mini Split
The ROVSUN 9000 BTU Mini Split air conditioner utilizes inverter technology and a 19 SEER energy efficiency rating, making it a cost-efficient option for smaller spaces up to 400 square feet. This unit offers reliable cooling and heating, adjusting temperatures quickly to suit bedrooms, living rooms, dens, offices, or apartments.
With its heat pump functionality, you can rely on the ROVSUN system for year-round use. The ultra-quiet 28dB operation makes it ideal for spaces where low noise levels are important, such as bedrooms or classrooms. Uniform air distribution ensures consistent comfort throughout the room.
The ROVSUN is AHRI certified, signifying high standards in energy savings and safety. Its eco-friendly features, high-quality compressor, and durable design all contribute to longer operational life and minimal energy consumption, helping with overall household efficiency. The included installation kit provides all essentials needed for setting up the ductless unit.
ROVSUN 9000 BTU WiFi Mini Split AC & Heater
This ROVSUN WiFi-enabled Mini Split system delivers both rapid cooling and heating through a 9,000 BTU output and achieves a high 19 SEER2 efficiency. With WiFi integration, you can control your AC unit remotely, scheduling temperature changes and operational modes as needed, bringing convenience and energy efficiency together.
The inverter system intelligently adjusts compressor speed for up to 35% energy savings, aligning energy use with real-time indoor temperatures. Dehumidification mode further enhances comfort by reducing excess moisture, making it suitable for bedrooms, living rooms, garages, and offices.
In mute mode, the ROVSUN operates as quietly as 28dB, ensuring a peaceful environment. The comprehensive installation kit included with the unit helps streamline the setup process. This model is designed for homeowners who want an advanced yet straightforward unit with remote connectivity features for everyday comfort.
Cooper & Hunter Mia Series 18,000 BTU Ductless Mini Split
For those needing to heat and cool larger spaces, the Cooper & Hunter Mia Series offers an 18,000 BTU output and a 19 SEER rating. Its AHRI certification and 230V operation make it well-suited for larger residential areas or business environments.
Featuring WiFi readiness and a smart port adapter, this model provides robust remote control capabilities through a proprietary mobile app. The system comes pre-charged with refrigerant, and the 16ft insulated copper line set, communication wires, and drainage extension are all included, ensuring a complete installation package (professional installation is required).
With a temperature operation range down to 5°F for heating, the Mia Series can maintain comfort in variable climates. Whisper Technology further reduces indoor noise, while multiple operational modes and energy-saving features blend powerful performance with efficiency to optimize both comfort and cost.
Senville LETO Series 9000 BTU 21.5 SEER Mini Split
The Senville LETO Series, with a 21.5 SEER2 rating, is designed for high performance and flexible integration. It features Alexa compatibility, enabling users to control the mini split by voice or smartphone app, as well as set up climate routines for optimal efficiency.
As a versatile 4-in-1 system, it functions as an air conditioner, heat pump, dehumidifier, and fan. The turbo function accelerates temperature changes, while its reliable DC inverter ensures efficient year-round operation. It continues to provide heat at temperatures as low as 5°F, suitable for various applications from homes to commercial spaces.
The Senville LETO’s combination of style and function makes it ideal for both domestic and small business use, blending seamlessly with interior décor while maintaining low operating noise. It is UL Listed and AHRI Certified, reassuring users of its safety and efficiency credentials.
YITAHOME 12,000 BTU 20 SEER2 WiFi Mini Split
The YITAHOME 12,000 BTU Mini Split brings robust cooling and heating for spaces up to 750 square feet, boasting a 20 SEER2 efficiency rating and equipped with modern inverter technology. It offers WiFi and Alexa compatibility for convenient remote operation.
With five different operating modes — including auto, cool, dry, heat, and fan — this system provides adaptable climate control. The HEALTH mode targets indoor air quality by generating negative ions and removing dust and PM2.5 particles, which is a valuable feature for allergy-prone households.
Operating at noise levels below 41 decibels, the YITAHOME maintains a peaceful atmosphere. Additional features like self-cleaning, iFEEL mode, timer, and energy-saving functions make it a smart option for those looking for a comprehensive, efficient mini split system for varied room sizes and climate requirements.
Buying Guide: How To Choose The Best SEER Mini Split
Selecting the best SEER mini split system requires understanding what features and specifications matter most for your home and usage patterns. Below are the top factors to consider before making your purchase:
1. SEER Rating and Efficiency
A higher SEER rating means better energy efficiency, resulting in lower operating costs over time. Mini split systems on the list above range from 19 SEER to 25 SEER and higher (for SEER2 ratings). Choose a high SEER model if your priority is long-term savings and environmental impact.
2. BTU Capacity and Room Size
The cooling/heating capacity, measured in BTUs, should match your room’s size. For example, 9,000 BTU units are best for small bedrooms or studios, while 12,000–18,000 BTU units suit larger living spaces or open-concept areas. Oversized or undersized units can result in inefficient temperature control and wasted energy.
3. Smart Controls and Connectivity
Modern mini splits often offer WiFi connectivity, smartphone app controls, or integration with platforms like Alexa. These features allow remote temperature management, programmable scheduling, and automation, enhancing convenience and potentially boosting efficiency by reducing unnecessary run time.
4. Noise Levels
Consider the noise rating (measured in decibels, dB) for mini splits installed in bedrooms, offices, or other quiet zones. Models with whisper or ultra-quiet design ensure comfort without distraction, especially when used at night or during focused activity.
5. Installation and Maintenance
Assess if you require a DIY-friendly kit or professional installation, as some mini splits are more complex. Look for systems that include a comprehensive installation kit (copper line set, wires, drain, etc.). Features like self-cleaning, automatic defrost, and diagnostic functions can simplify long-term maintenance.
6. Heating Capabilities
For year-round use, select a mini split with a heat pump function and a wide operational range, especially if you live in regions with cold winters. Models that keep heating at temperatures below freezing help maintain comfort even in harsh weather.
7. Certifications and Safety
Choose systems that are ETL, AHRI, or UL certified, ensuring they meet established standards for safety, performance, and durability. Certified models typically have undergone rigorous testing to guarantee reliable service.
8. Air Quality Features
Advanced models may include dehumidification, air purification, and “health” modes for superior indoor air quality—ideal for families with allergies or sensitivities.
Comparison Perspectives
- Energy Savings vs. Upfront Cost: Higher SEER models often cost more but result in lower utility bills long-term.
- Single vs. Multi-Zone: Most high-SEER models above are single-zone, but consider your needs if you want to expand system coverage.
- Smart Features: Alexa compatibility and app controls can make managing your home’s climate seamless and efficient.
Ultimately, the best SEER mini split is the one that fits your specific room size, preferred features, installation requirements, and energy goals. Review the provided product comparisons and buying criteria to select the model that aligns with your needs for comfort, efficiency, and convenience.