Mini split systems combine cooling and heating in a compact, wall-mounted package. The selections below focus on inverter-driven heat pump models with pre-charged condensers and installation kits, suitable for residential and light-commercial spaces. The summary table highlights key specs to compare quickly.
| Model | BTU | Voltage | Coverage | Notable Feature |
|---|---|---|---|---|
| COSTWAY 12000 BTU | 12000 | 115V | Up To 750 Sq. Ft. | 20 SEER2, 5 Modes |
| ROVSUN 9000 BTU | 9000 | 115V | Up To 400 Sq. Ft. | 19 SEER2, Wi‑Fi |
| ROVSUN 11500 BTU | 11500 | 115V | Mid-Sized Rooms | 17 SEER2, Wi‑Fi & Alexa |
| MRCOOL 18000 BTU | 18000 | 230V | Up To 800 Sq. Ft. | DIY Easy Pro Series |
| YITAHOME 12000 BTU | 12000 | 115V | Up To 750 Sq. Ft. | 20 SEER2, Alexa Compatible |
COSTWAY 12000BTU Mini Split Air Conditioner & Heater
This COSTWAY model is a 12000 BTU wall-mounted ductless unit with a 1-ton heat pump and inverter compressor. It is AHRI certified and rated at 20 SEER2, indicating strong seasonal efficiency for cooling and heating. The inverter technology adjusts compressor frequency to reduce start-stop cycles, improving energy use and component longevity.
Operational modes include auto, cool, dry, heat, and fan, plus sleep, ECO, iFEEL, four fan speeds, and turbo. The unit supports a 0.5–24 hour timer and features low-noise operation. A handheld remote controls settings and an automatic remote display timeout reduces disturbance at night. This unit targets rooms up to about 750 sq. ft.
ROVSUN 9000 BTU Wifi Enabled Mini Split Air Conditioner & Heater
The ROVSUN 9000 BTU unit is designed for small rooms up to 400 sq. ft. and features a 19 SEER2 inverter system for energy savings. It offers a wide operating temperature range (61°F–88°F) and includes heat pump functionality and dehumidification mode.
Key operational advantages include Wi‑Fi connectivity, quiet operation down to 28 dB in mute mode, and an intelligent inverter that adjusts compressor speed to reduce power use. This model is suitable for bedrooms, home offices, and similar spaces where noise and remote control capabilities matter.
ROVSUN 11500 BTU Wifi Enabled Mini Split Air Conditioner & Heater
The 11500 BTU ROVSUN model targets mid-sized rooms and integrates air conditioning, heat pump heating, dehumidify, and fan modes. It lists 17 SEER2 efficiency and supports operation in a wide outdoor range (5°F–122°F) with automatic defrosting and self-diagnosis features.
This unit includes Wi‑Fi and voice control compatibility with Alexa/Google Assistant, plus a 24‑hour timer, sleep and ECO modes, and wind swing. The package includes a pre-charged condenser and an installation kit, which can simplify contractor or DIY installs when matched to correct electrical requirements.
MRCOOL 18000 BTU 230V Ductless Inverter Mini Split (Easy Pro Series)
The MRCOOL Easy Pro Series is an 18,000 BTU ductless inverter mini split intended for larger spaces up to about 800 sq. ft. It is a 230V system and is marketed as a DIY-friendly option with factory-matched installation components for the refrigerant circuit.
This model provides combined heating and cooling year-round and emphasizes simpler professional or homeowner installation compared to traditional split systems. Its higher capacity and 230V requirement make it suitable for larger rooms, open-plan areas, and light commercial applications where a robust heat pump is needed.
YITAHOME 12000 BTU Mini Split Air Conditioner Heat Pump System
The YITAHOME 12000 BTU unit is a 20 SEER2 inverter mini split that supports rooms up to 750 sq. ft. It includes Wi‑Fi connectivity and is compatible with Alexa for voice control. The system features automatic defrosting, self-diagnosis, an iFEEL sensor mode, PM2.5 filtration features, and a “HEALTH” mode with negative ions and electrostatic dust removal.
YITAHOME highlights silent performance with operation below 41 dB and multiple modes (auto/cool/dry/heat/fan) plus sleep and energy-saving modes. ETL and AHRI certifications are noted, indicating certified performance and safety compliance in relevant test conditions.
Buying Guide: How To Choose A Mini Split AC Heater Unit
Selecting a mini split for combined cooling and heating requires matching equipment performance to room size, climate, electrical capacity, and user expectations. Below are core considerations and comparison perspectives.
1. Correct Capacity (BTU) And Room Sizing
- Match BTU To Area: Use square footage and room characteristics (ceilings, insulation, windows) to size a unit. Rough guides: 9,000 BTU for ~300–450 sq. ft., 12,000 BTU for ~500–750 sq. ft., and 18,000 BTU for up to ~800–1,250 sq. ft. Adjust for sun exposure and occupancy.
- Avoid Oversizing: Oversized units short-cycle, reducing dehumidification and efficiency. Undersized units struggle to meet setpoints.
2. Energy Efficiency Ratings
- SEER2 and HSPF2: SEER2 measures cooling efficiency; higher numbers reflect lower seasonal energy use. HSPF2 (or HSPF equivalent) measures heat pump heating efficiency—important in cold climates.
- Inverter Technology: Inverter compressors modulate speed, reducing cycling and offering better part-load efficiency and quieter operation.
3. Heat Pump Performance And Climate Suitability
- Low-Temperature Heating: If you live in colder regions, check the unit’s rated heating range and whether it supports efficient operation near freezing temperatures.
- Defrost And Frost Control: Automatic defrost capability is necessary for outdoor units operating in subfreezing conditions.
4. Voltage And Electrical Requirements
- 115V vs 230V: Smaller models often use 115V (single-phase household circuits). Higher-capacity units (e.g., 18,000 BTU) may require 230V. Confirm available circuit capacity and breaker sizing.
- Professional Electrical Work: Upgrading circuits typically requires an electrician and permits; factor this into installation planning.
5. Refrigerant Type And Environmental Considerations
- R32 vs R410A: R32 has a lower global warming potential than R410A. Check manufacturer refrigerant type if environmental impact is a priority.
- Pre-Charged Condensers: Units sold with a pre-charged outdoor unit simplify installation—especially for DIY or quick contractor installs.
6. Noise Levels And Indoor Comfort
- Indoor Unit dB Levels: Bedrooms and offices benefit from models with lower decibel ratings (e.g., 26–30 dB in quiet mode).
- Air Distribution: Swing louvers and multiple fan speeds improve evenness of comfort and reduce hot/cold spots.
7. Smart Controls And Convenience Features
- Wi‑Fi And Voice Control: Remote access, scheduling, and voice control (Alexa/Google) add convenience and potential energy savings through smarter scheduling.
- Sensors: iFEEL or built-in sensors measure room temperature at the remote or unit, improving local comfort control.
8. Installation: DIY Kits Vs Professional Service
- Complete Installation Kits: Many units include a basic installation kit (mounting plate, lines, drain line). A pre-charged condenser often reduces HVAC technician refrigerant work.
- DIY-Friendly Models: Some manufacturers design products for the competent DIYer but confirm local code requirements. Large capacities and electrical upgrades typically require licensed contractors.
9. Certifications, Warranties, And Aftercare
- Certifications: AHRI and ETL listings verify tested performance and safety. Look for matching AHRI numbers if available.
- Warranty Coverage: Compare warranty lengths for parts and compressors and check for registration requirements. Consider availability of service networks for future repairs.
10. Maintenance And Longevity
- Filter Access: Washable or replaceable filter accessibility affects routine maintenance.
- Annual Inspection: Heat pumps benefit from yearly inspections for refrigerant charge, electrical connections, and coil cleanliness.
Comparison Perspectives
- Small Rooms & Quiet Operation: Lower BTU, high SEER2 models with low dB ratings and Wi‑Fi (e.g., ROVSUN 9000) are often best for bedrooms and offices.
- Mid‑Size Living Areas: 12,000 BTU models with 19–20 SEER2 (COSTWAY, YITAHOME) balance capacity and efficiency for living rooms up to ~750 sq. ft.
- Larger Rooms & DIY Install: Higher-capacity 18,000 BTU systems (MRCOOL) suit open plans or larger spaces and may offer DIY-friendly installation with compatible electrical service.
- Smart Home Integration: If remote control and automation are priorities, models with Wi‑Fi and voice compatibility simplify integration.
Use the specifications above to align unit capacity, efficiency, features, and installation needs with your home’s layout and climate. Evaluate trade-offs among initial complexity, long-term operating cost (SEER2/HSPF2), and convenience features like Wi‑Fi or noise performance when selecting a mini split AC heater unit.