Tosot TM30H4O 3-Zone Ductless Mini Split Heat Pump System – 24,900 BTU Cooling / 37,800 BTU Heating – 21 SEER – Inverter – WiFi Enabled
A powerful and efficient multi-zone HVAC solution designed for custom home comfort. Ideal for residential upgrades, additions, garages, or light commercial installs where individual room control is essential.
🌟 Product Overview
The Tosot TM30H4O Multi-Zone Mini Split Heat Pump System offers a reliable, energy-efficient way to heat and cool up to three separate spaces—independently. Powered by Gree’s cutting-edge G10 Inverter Technology, the system delivers 24,900 BTU of cooling and 37,800 BTU of heating with quiet, efficient operation. This 3-zone system includes two 9,000 BTU and one 12,000 BTU wall-mounted air handlers, all managed by wireless remotes and optional WiFi app control.
Backed by intelligent features like low ambient heating (-4°F), intelligent defrosting, and soft start electronics, the TM30H4O ensures long-lasting performance even in demanding weather. Whether you’re outfitting a home, apartment, office, or new build, this system provides targeted climate control with ENERGY STAR-level efficiency.
🧰 Key Product Benefits
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3-Zone Flexibility: Comfort control for three distinct areas with separate air handlers and remotes.
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High Efficiency: 21 SEER / 10.2 HSPF rating lowers energy bills compared to traditional HVAC systems.
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Ultra-Quiet Operation: Indoor units are whisper-quiet, ideal for bedrooms, offices, and libraries.
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WiFi-Enabled Control: Compatible with the Tosot App (iOS & Android) for scheduling, mode selection, and remote access.
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Cold Climate Heating: Operates down to -4°F using intelligent pre-heating and compressor protection.
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Smart Performance: Auto restart, memory function, sleep mode, and 24-hour timer add convenience.
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Compressor Technology: G10 Inverter adapts performance to real-time room needs, reducing energy waste.
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Durability Enhancements: Includes heated belt around compressor and built-in drain pan heater.
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Multiple Fan Speeds & Modes: Includes dehumidification, fan-only, turbo, eco, and auto-sensing mode.
📐 Detailed Specifications
| Outdoor Unit Model |
TM30H4O |
| Indoor Unit Models |
2x TW09HQ2C2DI (9K BTU), 1x TW12HQ2C2DI (12K BTU) |
| Total Cooling Capacity |
24,900 BTU |
| Total Heating Capacity |
37,800 BTU |
| Compressor Type |
Inverter – Gree G10 Variable Speed |
| Refrigerant |
R410A – Eco-Friendly, Non-Ozone Depleting |
| System Type |
Heat Pump – Ductless |
| Zones Supported |
3 Zones |
| Voltage |
208/230V |
| Electrical Phase |
1 Phase |
| SEER Rating |
21 |
| HSPF Rating |
10.2 |
| WiFi Control |
Yes – Built-In |
| Minimum Operating Temp |
-4°F (Heating Mode) |
| Certifications |
AHRI Certified, Energy Star, ETL, UL, cUL |
| Outdoor Unit Dimensions (H x W x D) |
43.4" x 42.5" x 17.3" |
| Weight (Outdoor Unit) |
Approx. 170 lbs |
| Parts Warranty |
5 Years |
| Compressor Warranty |
7 Years |
📊 BTU Sizing Chart – How to Choose the Right Zone Capacity
Use this chart to estimate the BTU capacity needed for each individual room or zone. For multi-zone systems, add the BTUs required per room to determine total system size.
Area To Be Cooled Capacity Needed (BTUs Per Hour)
150 to 250 sq. ft. 6,000 BTUs
250 to 300 sq. ft. 7,000 BTUs
300 to 350 sq. ft. 8,000 BTUs
350 to 400 sq. ft. 9,000 BTUs
400 to 450 sq. ft. 10,000 BTUs
450 to 550 sq. ft. 12,000 BTUs
550 to 700 sq. ft. 14,000 BTUs
700 to 1,000 sq. ft. 18,000 BTUs
1,000 to 1,200 sq. ft. 21,000 BTUs
1,200 to 1,400 sq. ft. 23,000 BTUs
1,400 to 1,500 sq. ft. 24,000 BTUs
1,500 to 2,400 sq. ft. 36,000 BTUs
2,400 to 3,200 sq. ft. 48,000 BTUs
🛠️ Installation Notes
- This system requires professional installation by a licensed HVAC technician.
- Each zone must be connected during install to activate the system properly.
- Use of a line set, wall bracket, and disconnect box is recommended for proper setup (not included).
Need help designing your system or adding accessories?
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