Best Mini Split Systems for 1400 Sq Ft and Larger Homes
Finding an energy-efficient mini split that comfortably cools or heats a space around 1400 square feet can be challenging. The following five models are selected for their coverage, efficiency, and smart features. Each option offers ductless comfort, heat pump capability, and installation kits to help you compare what fits your home best.
| Product | Coverage | Key Benefit |
|---|---|---|
| Della 28K BTU ODU 20 SEER2 | Up to 1400 sq ft | Two indoor zones; strong cooling and heating |
| Della Econo 23000 BTU | Up to 1500 sq ft | High efficiency; smart compatibility |
| YITAHOME 12000 BTU | Up to 750 sq ft | Wi‑Fi & Alexa; versatile modes |
| Della Vario 12000 BTU | Up to 550 sq ft | Compact, efficient inverter system |
| COSTWAY 11500 BTU | Up to 750 sq ft | Wi‑Fi enabled; installation kit included |
Della 28K BTU ODU 20 SEER2 Mini Split
This dual-zone mini split offers 28,000 BTU/h capacity split across two indoor units and 20 SEER2 efficiency. It operates on 208-230V and is AHRI certified, with a reversible heat pump for heating in cooler conditions. The system is pre-charged and includes installation kits for two zones and 16-foot connections.
Designed to cover up to 1400 square feet, it supports environments down to 5°F, making it suitable for variable climates. Noise is kept low, with the outdoor or indoor unit maintaining quiet operation. Note that professional installation is required, and line-set length may affect refrigerant levels.
Key features include DC inverter technology and Alexa/wifi compatibility, enabling smart control and energy savings. It ships with standard copper piping and long drain length to accommodate larger layouts. This model emphasizes efficiency and multi-zone comfort for open floor plans.
Della Econo Series 23000 BTU Mini Split
This 23,000 BTU/h unit delivers 17 SEER2 efficiency with cooling and heating for up to 1500 square feet. It operates on 208-230V and includes a full installation kit with copper pipes. The system is AHRI and ETL certified, providing reliable energy performance and a heating capability down to around 5°F.
Smart features include Alexa and Wi‑Fi compatibility for convenient remote control. The remote sensor can adjust temperature automatically, optimizing comfort and energy use. Like many ductless systems, professional installation is recommended to ensure optimal refrigerant charge and performance.
Designed for larger living spaces, this model balances power and efficiency while offering flexible installation options to accommodate different room layouts. It remains a solid choice for multi-room configurations where a higher BTU/h rating is beneficial.
YITAHOME 12000 BTU Mini Split
This 12,000 BTU unit covers up to 750 square feet and offers 20 SEER2 efficiency. It includes a complete installation kit and supports Alexa integration for voice control. The system features an inverter compressor for energy savings and smooth temperature control.
Smart modes cover auto, cooling, dry, heat, and fan operations, with a quiet operating level suitable for bedrooms and living spaces. It supports a diverse climate range and provides flexible installation options, though large, open areas may require higher BTU/h units for even distribution.
The unit emphasizes energy-saving benefits and smart home compatibility while enabling easy setup with the included installation kit. It is a practical mid-range option for smaller rooms or secondary living areas within a larger floor plan.
Della Vario Series 12000 BTU Mini Split
The 12,000 BTU/h Vario series unit provides 20.5 SEER2 efficiency and cooling for up to 550 square feet. It operates at 110-120V and includes a pre-charged heat pump capability with a 16.4-foot installation kit. It features 4D airflow and a remote I Feel mode for precise comfort control.
Designed for compact spaces or mid-sized rooms, the Vario series focuses on strong performance in a smaller footprint. It supports energy savings through inverter technology and smart scheduling features, while maintaining straightforward operation and installation requirements.
Della Motto Series 18000 BTU Wifi Mini Split
The Motto series delivers 18,000 BTU/h with 19 SEER2 efficiency for spaces up to 1000 square feet. It runs on 208-230V and is pre-charged with a heat pump. This model includes a full installation kit and supports Alexa compatibility for smart home control.
With R32 refrigerant and improved indoor air quality, the Motto series emphasizes modern refrigerant choices and environmental considerations. It offers a broad operating range with smart features like timer, sleep mode, and multiple modes for cooling, heating, and humidity control.
Buying Guide: Key Purchase Considerations For A 1400 Sq Ft Space
- Room layout and BTU sizing: For 1400 sq ft, multi-zone solutions (two indoor units) can balance heat/cool across living areas. Over-sizing can waste energy; under-sizing can lead to uneven comfort.
- SEER and energy efficiency: Higher SEER2 values typically yield lower operating costs. Look for models rated AHRI certified for reliable performance data.
- Voltage and electrical readiness: Most systems run on 208-230V or 110-120V. Verify existing electrical service and available breakers before purchase and installation.
- Heat pump capability and climate range: A ductless system with a heat pump provides heating in winter months. Check minimum operating temperatures to ensure suitability for your climate.
- Installation requirements: Many models require professional installation due to refrigerant charge and line-set handling. Confirm included installation kits and potential extra costs.
- Smart features and connectivity: Wi‑Fi and voice control (Alexa/Google) enable remote operation and energy monitoring. Ensure your home network supports the chosen system.
- Maintenance and filtration: Some units offer self-diagnostic features and air-quality enhancements. Regular cleaning of filters and outdoor units promotes efficiency.
- Refrigerant type and environmental impact: Newer models often use more eco-friendly refrigerants like R32. Consider environmental considerations when selecting a unit.
- Noise levels: Consider quiet operation for bedrooms or open living spaces. Indoor and outdoor units have separate decibel ratings to review.
- Warranty and service availability: Check warranty terms and the availability of local technicians familiar with ductless systems in your area.