Finding a ductless mini split that excels in cooling while remaining simple to install is the top priority for many buyers. This guide compares five popular cooling-focused mini splits, highlighting who they’re best for, how they perform, and any limitations to watch for. Ideal buyers include small apartments, home offices, bedrooms, sunrooms, and spaces where extending central HVAC isn’t practical. The table below summarizes key choices to help you compare at a glance.
| Product | Best For | Size Coverage | Notes |
|---|---|---|---|
| MRCOOL 12000 BTU Easy Pro | Small homes, offices up to 550 sq. ft. | Up to 550 sq. ft. | DIY-friendly installation |
| Rellytech 9000 BTU | Bedrooms and living rooms up to 550 sq. ft. | Up to 550 sq. ft. | 4 modes, ECO option |
| MRCOOL 18000 BTU Easy Pro | Mid-size rooms up to 800 sq. ft. | Up to 800 sq. ft. | Higher capacity, still DIY friendly |
| EXNOS 12000 BTU | Offices, sunrooms up to 750 sq. ft. | Up to 750 sq. ft. | Energy-efficient with ECO mode |
| Temprium 12000 BTU | Versatile spaces up to 750 sq. ft. | Up to 750 sq. ft. | Strong SEER2 efficiency |
MRCOOL 12,000 BTU Easy Pro Mini Split
Best for compact spaces that need reliable cooling and occasional heating. This 12,000 BTU unit delivers effective temperature control for rooms up to 550 sq. ft. It’s marketed as DIY-friendly, reducing installation mess and costs. Quiet operation supports bedrooms and study areas. The data suggests a focus on energy efficiency and straightforward maintenance.
Who it’s best for: apartment dwellers, small home offices, or retail backrooms needing steady cooling without central HVAC upgrades.
Caution: The system’s suitability is strongest in zones within its BTU range; larger or highly sun-exposed spaces may require higher capacity models.
Rellytech 9,000 BTU Mini Split Inverter
Best for single rooms or small offices where consistent comfort is needed with energy-conscious operation. This unit provides 9,000 BTU cooling and 9,000 BTU heating, covering up to 550 sq. ft. It includes ECO mode for energy savings and flexible airflow with four fan speeds and a 90° swing. Quiet operation supports peaceful sleeping or focused work.
Who it’s best for: bedrooms, studios, or small home offices seeking balanced heating and cooling with eco features.
Caution: With a lower capacity than larger spaces, avoid this model for rooms approaching or exceeding 600 sq. ft.
MRCOOL 18,000 BTU Easy Pro Mini Split
Best for larger rooms or small open layouts up to 800 sq. ft., this higher-capacity unit delivers robust cooling and heating. It shares DIY installation features with the 12K model and emphasizes energy efficiency and quiet operation. Suitable for spaces where a single zone must handle more exposure or higher occupancy.
Who it’s best for: living rooms or home offices where a single unit must manage more area and variable occupancy.
Caution: Higher BTU means increased installation considerations; ensure proper clearance and electrical capacity before setup.
EXNOS 12,000 BTU Inverter Mini Split
Best for versatile rooms up to 750 sq. ft. with strong energy efficiency thanks to SEER2 ratings and ECO mode. It provides 12,000 BTU cooling and 12,500 BTU heating and claims quiet sleep operation. Ideal for spaces where extended central HVAC isn’t feasible and energy savings matter.
Who it’s best for: home offices or sunrooms where a balance of quiet operation and energy savings is important.
Caution: Check ambient climate suitability; very hot or very cold extremes may affect performance in some installations.
Temprium 12,000 BTU Mini Split
Best for energy-conscious buyers seeking high SEER2 efficiency with robust cooling and heating. This 12,000 BTU unit supports spaces up to 750 sq. ft. and features a 22 SEER2 rating with DC inverter operation. It emphasizes quiet performance and eco-friendly refrigerant choices, making it a strong all-around option.
Who it’s best for: energy-conscious homes, bedrooms, or small living areas that require efficient year-round comfort.
Caution: Taller ceilings or unusually shaped rooms might require strategic placement to achieve optimal airflow distribution.
Buying Guide
What size is right for your space?
Choose BTU capacity based on room size, insulation, sun exposure, and ceiling height. A general guide is 9,000–12,000 BTU for up to 550 sq. ft., 12,000–18,000 BTU for 550–800 sq. ft., and 18,000 BTU for larger open areas. Avoid over- or under-sizing to maintain comfort and efficiency.
What energy features matter?
Look for inverter technology, SEER2 ratings, and ECO modes. Inverter systems adjust compressor speed for steady temperatures and lower energy usage. Higher SEER2 generally means better long-term efficiency.
How important is noise?
Quiet operation improves comfort, especially in bedrooms or home offices. Check sleep modes and dB ratings if available in product descriptions.
Installation considerations
DIY installation can save costs but requires careful handling of refrigerant lines and electrical connections. Ensure model-specific clearances and indoor-outdoor alignment. Pre-charged systems can simplify setup but follow all safety guidelines.
What about warranties and service?
Warranty details and local service availability vary. Confirm what is included with your chosen model and whether professional installation is recommended in your region.
FAQ
- Do ductless mini splits require professional installation? Some models advertise DIY installation, but refrigerant handling and electrical work may require a pro in many areas.
- Can a 12,000 BTU unit cool a large living room? It can cool up to about 550–750 sq. ft. depending on insulation and sun exposure; larger spaces may need higher BTU units or multiple zones.
- Is inverter technology worth it? Yes, it improves efficiency and maintains stable temperatures by adjusting compressor speed rather than turning on and off.
- Are these units suitable for bedrooms? Yes, many models offer quiet operation and sleep modes suitable for bedrooms and nurseries.
- What maintenance is required? Regular filter cleaning and periodic system checks help sustain efficiency and performance.
- Do these units provide heating in winter? Most listed options are heat pumps that provide both cooling and heating, depending on the model and outdoor conditions.
