Best Affordable Mini Split Heating and Cooling Units
Looking for cheap, efficient climate control with silent operation and easy installation? This guide highlights five affordable mini split systems that balance cost with performance for American homes. Each option is suited to different spaces and use cases, from small bedrooms to larger living areas and home offices. Read on to compare BTU capacity, coverage, and notable features to help you choose confidently.
To help you compare quickly, here is a concise overview of the top five picks:
| Product | BTU (Cooling / Heating) | Coverage | Key Feature | Best For |
|---|---|---|---|---|
| Rellytech Mini Split AC/Heating System — 9000 BTU | 9,000 / 9,000 | Up to 550 sq ft | 4 modes; ECO energy saver; 90° swing | Medium rooms, bedrooms, small offices |
| GAOMON 21 SEER2 Mini Split — 12,000 BTU | 12,000 / 12,000 | Up to 750 sq ft | Five modes; remote with backlit LCD; all-weather | Living spaces, basements, garages |
| Rellytech 12,000 BTU Mini Split — 12000 BTU | 12,000 / 12,500 | Up to 750 sq ft | 4 modes; ECO energy saver; 90° swing | Medium-to-large rooms, multi-room setups |
| EXNOS 12,000 BTU Mini Split | 12,000 / 12,500 | Up to 750 sq ft | High SEER2 19; ECO mode; quiet sleep | Quiet operation; energy-conscious spaces |
| MRCOOL 12,000 BTU — Easy Pro Series | 12,000 / 12,000 | Up to 550 sq ft | Easy DIY installation; economical design | Home offices, small or retrofit spaces |
Rellytech 9000 BTU Mini Split AC/Heating System
The Rellytech unit provides 9,000 BTU cooling and 9,000 BTU heating, suitable for spaces up to 550 sq ft. It offers four operating modes (cool, heat, fan, dry) and an ECO mode to optimize energy use. A 90-degree vertical swing and multiple fan speeds help tailor air distribution for bedrooms, living rooms, offices, or garages. This pre-charged system is a practical choice for budget-conscious buyers who still want year-round climate control.
Best for: Small to medium rooms where consistent year-round comfort is needed without high upfront costs.
Why selected: Compact size and energy-saving modes make it a solid everyday option for apartments or smaller homes.
Caution: Performance may be limited in very large or multi-room spaces; consider higher-capacity models for expansive areas.
GAOMON 12,000 BTU Mini Split — 21 SEER2
This 12,000 BTU system covers up to 750 sq ft with a broad operating range and five modes, including a health-oriented mode and auto functionality. The backlit LCD remote simplifies operation, and the unit is designed for all-season performance with automatic defrosting and 24-hour timing options. It’s well-suited for living rooms, bedrooms, or small commercial spaces seeking reliable climate control with quiet operation.
Best for: Medium-to-large rooms where versatile control and health-focused features matter.
Why selected: All-around capability with extra modes and a user-friendly remote make it a flexible choice for varied daily needs.
Caution: Some users may prefer even lower noise profiles in bedrooms; check noise data for quieter installations if needed.
Rellytech 12000 BTU Mini Split — 12000 BTU
The Rellytech 12,000 BTU system delivers 12,000 BTU cooling and 12,500 BTU heating for spaces up to 750 sq ft. It includes four modes plus ECO energy-saving functionality and a 90° swing for even distribution. This model is a strong pick for medium-to-large rooms that demand robust performance without a premium price.
Best for: Larger living spaces or multi-use rooms needing consistent heating and cooling across seasons.
Why selected: Good balance of capacity and efficiency for steady comfort in busy areas.
Caution: As a 230V-capable variant, ensure electrical setup matches your space’s wiring requirements before installation.
EXNOS 12,000 BTU Mini Split
The EXNOS model offers 12,000 BTU cooling and 12,500 BTU heating, enabling reliable comfort for rooms up to 750 sq ft. It features a high SEER2 rating (19) and ECO mode to reduce energy use. Quiet sleep mode supports undisturbed nights, and the system supports automatic defrosting and self-diagnosis for maintenance ease.
Best for: Energy-conscious buyers who want efficient operation and quiet nighttime performance.
Why selected: The high SEER2 rating and eco features translate to lower ongoing energy costs in everyday use.
Caution: Higher initial capacity may be more than needed in very small rooms; sizing precisely to space is recommended.
MRCOOL 12,000 BTU — Easy Pro Series
The MRCOOL Easy Pro Series provides 12,000 BTU cooling and heating for spaces up to 550 sq ft. It emphasizes easy DIY installation and cost efficiency, making it a practical option for homeowners who want to install or retrofit without professional help. The unit is designed for quiet operation and efficient performance in both seasons.
Best for: Homeowners seeking straightforward installation and a compact footprint in smaller living areas.
Why selected: DIY-friendly design reduces installation barriers and overall project costs.
Caution: For very large rooms, consider a higher-capacity model to avoid overworking the unit during peak loads.
Buying Guide: Key Considerations For Cheap Mini Split Systems
- Room size and BTU: Match cooling/heating capacity to the space. Oversized units can cycle on/off frequently, while undersized units struggle in extreme conditions.
- Seer/Energy efficiency: Higher SEER ratings typically translate to lower energy bills over time. Look for SEER2 values where available.
- All-season performance: Check operating temperature ranges and features like ECO mode, auto defrost, and sleep modes for comfort and efficiency.
- Installation effort: DIY-friendly models save costs, but verify electrical requirements and outdoor unit mounting needs.
- Noise levels: Quiet operation is important for bedrooms and study areas. Review dB ratings if available, especially for night use.
- Air distribution: Swivel louvers or multiple fan speeds help achieve uniform cooling/heating across the room.
- Maintenance: Features like self-diagnosis, washable filters, and accessible service panels reduce long-term upkeep.
Frequently Asked Questions
- What size mini split should I choose for a small bedroom?
Choose around 9,000 BTU to 12,000 BTU for most 100–350 sq ft bedrooms, ensuring the unit can efficiently heat and cool the space without excessive cycling. - Are mini splits expensive to operate?
Operating costs depend on BTU needs and SEER rating. Higher SEER2 systems typically offer better energy efficiency and may save money over time. - Can I install a mini split myself?
Some models advertise DIY-friendly installation, but ensure you meet electrical and outdoor-unit mounting requirements. Professional installation is recommended for complex setups or 230V systems. - Do all mini splits provide heat in winter?
Most mini splits are heat pumps capable of heating in mild to moderate winters. Extreme cold may reduce efficiency; verify the operating temperature range for your climate. - What maintenance does a mini split require?
Regular filter cleaning, seasonal inspections, and ensuring outdoor vents are clear help maintain efficiency and air quality. - Is it better to buy a 230V or 115V mini split?
115V units are common for smaller spaces and easier to install; 230V units typically cover larger rooms and higher capacities but require appropriate electrical wiring.