Product Overview
The TOSOT 18,000 BTU Mini-Split Air Conditioner and Heating System is a versatile and energy-efficient solution for maintaining optimal indoor climate. This 20 SEER2 Wi-Fi enabled ductless inverter AC unit provides both powerful cooling and effective heating, suitable for spaces up to 1200 square feet. Its advanced compressor ensures quiet operation and reliable performance across a wide range of outdoor temperatures, from -13°F to 122°F.
Key features include smart control via the Gree+ app and voice commands, a ductless design for simplified installation, and a focus on energy savings. The system operates quietly, making it ideal for bedrooms, offices, and other areas where minimal noise is desired.

Image: Overview of the TOSOT Mini-Split system, showing the indoor unit, outdoor unit, remote control, and mobile app interface.
Setup and Installation
The TOSOT Mini-Split system is designed for straightforward installation due to its ductless nature. It operates on a 208-230V electrical supply. The unit comes with a 16ft copper line set and all necessary components for installation.
Included Components:
The unit set may be shipped in multiple packages and arrive at different times. Please verify all components are present before beginning installation.
- Indoor Unit
- Outdoor Unit
- 16 Ft. Copper Line Set
- Remote Control
- User Manual
- App Control Quick Guide
- Mounting Plate
- Insulation Sleeve
- Signal Cable
- Drywall Anchors
- Flare Nuts
- Remote Holder Fixing Screws
- Mounting Plate Fixing Screws
- AAA Batteries (for remote)
- Wall Cuff
- Drain Joint
- Tape
- Sealing Gum
- Drain Hose

Image: Detailed breakdown of components included with the indoor and outdoor units for installation.
For detailed installation steps, including electrical wiring and refrigerant line connections, please refer to the comprehensive User Manual (PDF). Professional installation is recommended to ensure proper setup and optimal performance.
Operating Instructions
Your TOSOT Mini-Split system offers multiple modes and convenient control options to suit your comfort needs.
Modes of Operation:
- Cooling: Provides efficient cooling with 18,000 BTU/h capacity.
- Heating: Delivers powerful heating with 19,100 BTU/h capacity.
- Fan: Circulates air with 7 adjustable fan speeds.
- Dehumidifying: Removes up to 91.20 pints/day of moisture for a fresher environment.

Image: Visual representation of the system's cooling, heating, fan, and dehumidifying capabilities.
Control Options:
- Remote Control: Use the included remote to adjust temperature, mode, fan speed, swing, sleep mode, and set timers.
- Wi-Fi Enabled (Gree+ App): Control your unit remotely from anywhere using the Gree+ app on your smartphone. This allows for convenient adjustments before you arrive home or while away.
- Voice Control: The system supports voice control for hands-free operation, integrating with popular smart home assistants.

Image: Demonstrates controlling the TOSOT Mini-Split using the remote control and the Gree+ mobile application.
For detailed instructions on using each mode and setting up Wi-Fi connectivity, please refer to the User Manual (PDF).
Maintenance
Regular maintenance ensures the longevity and efficient operation of your TOSOT Mini-Split system.
Filter Cleaning:
The indoor unit is equipped with air filters that should be cleaned regularly to maintain air quality and system efficiency. Depending on usage and environmental conditions, filters may need cleaning every 2-4 weeks.
- Turn off the unit and disconnect power before performing any maintenance.
- Open the front panel of the indoor unit.
- Carefully remove the air filters.
- Clean the filters using a vacuum cleaner or wash them gently with lukewarm water and mild detergent.
- Allow filters to dry completely before reinserting them.
- Close the front panel.

Image: Close-up view of the indoor unit's air filter compartment, showing the removable filters.
General Cleaning:
Wipe the exterior of the indoor and outdoor units with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners. Ensure the outdoor unit's coils are free from debris for optimal airflow.
For more detailed maintenance schedules and procedures, consult the User Manual (PDF).
Troubleshooting
If you encounter issues with your TOSOT Mini-Split system, refer to the following common troubleshooting tips. For complex problems, always consult a qualified technician or the full user manual.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on | No power, remote batteries dead, circuit breaker tripped. | Check power supply, replace remote batteries, reset circuit breaker. |
| Insufficient cooling/heating | Dirty air filters, blocked outdoor unit, incorrect mode/temperature setting, low refrigerant. | Clean filters, clear obstructions from outdoor unit, verify settings, contact technician for refrigerant check. |
| Unusual noise | Loose parts, fan obstruction, refrigerant flow noise (normal). | Check for loose parts, remove obstructions, consult manual for normal operating sounds. |
| Water leakage from indoor unit | Clogged drain hose, improper installation angle. | Clear drain hose, ensure proper unit leveling. |
For a comprehensive troubleshooting guide and error codes, please refer to the User Manual (PDF).
Specifications
| Feature | Detail |
|---|---|
| Brand | TOSOT |
| Model Number | GWH18ATDXD-D6DNA1AO |
| Cooling Power | 18,000 British Thermal Units (BTU) |
| Heating Capacity | 19,100 BTU/h (as per image) |
| Seasonal Energy Efficiency Ratio (SEER2) | 20 |
| Voltage | 230 Volts |
| Noise Level | 22dB to 36dB (Indoor Unit) |
| Floor Area Coverage | Up to 1200 Square Feet |
| Operating Temperature Range (Cooling) | Up to 122°F |
| Operating Temperature Range (Heating) | As low as -13°F |
| Product Dimensions (Indoor Unit) | 37.1"W x 13.1"H x 9.7"D (for 18,000 BTU model) |
| Product Dimensions (Outdoor Unit) | 31.6"W x 21.9"H x 13.8"D (for 18,000 BTU model) |
| Special Features | WiFi Enabled, Fast Cooling, Voice Controlled |
| Included Components | Indoor Unit, Outdoor Unit, 16 Ft. Copper Line Set |

Image: Dimensional specifications for 9,000, 12,000, 18,000, and 24,000 BTU TOSOT Mini-Split units.
Warranty and Support
TOSOT is committed to providing quality products and reliable customer support.
Manufacturer:
Gree Electric Appliances, Inc. of Zhuhai
Customer Support:
US-Based Customer Support is available to assist with any inquiries or issues you may have regarding your TOSOT Mini-Split system.

Image: Highlights TOSOT's commitment to quality, secure packaging, and US-based customer support.
For detailed warranty information, terms, and conditions, please refer to the official User Manual (PDF) provided with your product or contact TOSOT customer service directly.