1. Important Safety Instructions
Please read and understand all safety instructions before using this appliance. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- ALCI Anti-Leakage Plug: This heater is equipped with an ALCI (Appliance Leakage Current Interrupter) plug for enhanced safety. It automatically cuts off power in case of ground fault, reducing the risk of electric shock. Test the ALCI plug monthly as per instructions.
- Overheat Protection: The heater features internal and environmental overheat protection systems to prevent fire hazards. If the unit overheats, it will automatically shut off.
- Air Outlet Self-Correction: An air outlet self-correction system helps prevent malfunctions.
- Placement: Ensure proper clearance around the heater. Do not block air inlets or outlets. Do not operate near water or in excessively damp environments.
- Power Supply: Connect the heater to a 120V, 12.5A electrical outlet. Do not use extension cords.
- Children and Pets: Keep children and pets away from the heater. Use child lock feature when available.
- Maintenance: Always unplug the heater before cleaning or performing any maintenance. Clean with a soft, dry cloth.
2. Product Overview
The Dreo Smart Wall Heater is designed to provide efficient and safe heating for indoor spaces. Its wall-mounted design saves floor space, while smart features offer convenient control.
- Power: 1500W for rapid heating.
- Oscillation: 120° vertical oscillation for widespread warmth.
- Smart Control: Compatible with Dreo app, Alexa, and Google Home for voice and remote control.
- Adjustable Thermostat: Customize temperature settings from 41°F to 95°F.
- 24-Hour Timer: Schedule heating cycles for convenience.
- Safety Features: ALCI plug, internal/environmental overheat protection, air outlet self-correction.
3. Package Contents
- Space Heater Body
- Remote Control
- Accessory Package (for installation)
- Quick Start Guide
- User Manual
4. Setup and Installation
4.1 Wall Mounting
The Dreo Smart Wall Heater is designed for easy wall mounting. Use the provided drilling guide and accessory package for secure installation. Ensure the mounting location is clear of obstructions and provides adequate ventilation.

Image: Dimensions and installation guide for the Dreo Wall Heater, showing measurements and mounting points.
4.2 Power Connection
Connect the heater's ALCI plug directly into a standard 120V, 12.5A wall outlet. Do not use extension cords or power strips.

Image: The Dreo Wall Heater showing its integrated ALCI safety plug.
4.3 App Setup and WiFi Pairing
To enable smart control, download the Dreo app from your device's app store. Follow the in-app instructions to pair your heater with your mobile device. Ensure Bluetooth is enabled and your heater is plugged in. Hold the Fan Angle button on the heater for 5 seconds to start WiFi connection settings. The WiFi icon will blink during pairing.
Video: A detailed guide on setting up and connecting the Dreo Wall-mounted Heater WH739S to the Dreo app via iOS or Android device. It demonstrates the pairing process, including holding the fan angle button and entering WiFi credentials.
4.4 Voice Control Integration
The Dreo Smart Wall Heater supports voice control via Amazon Alexa and Google Home. Link your Dreo account within the respective smart home app to enable voice commands for power, mode, speed, temperature, and fan angle adjustments.
5. Operating Instructions
5.1 Control Panel Overview
The heater features an intuitive control panel with touch-sensitive buttons and a digital display.
Video: A rapid review of the Dreo Wall-mounted Heater WH739S, demonstrating its control panel functions including power, mode selection (H1, H2, H3, ECO, Fan Only), oscillation, and timer settings.
5.2 Power On/Off
Press the power button (Ⓢ) on the control panel or remote, or use the Dreo app/voice command to turn the heater on or off.
5.3 Heat Settings and ECO Mode
Cycle through heat settings (H1, H2, H3) or ECO mode using the mode button (≡). H1 is 900W, H2 is 1300W, and H3 is 1500W. In ECO mode, the heater maintains a set temperature by cycling on and off.
5.4 Fan Only Mode
Select Fan Only mode to circulate air without heating. This can be accessed via the mode button or app.
5.5 Vertical Oscillation
Adjust the vertical oscillation angle (60°, 90°, 120°, or full oscillation) using the oscillation button (↻) on the control panel or remote. This directs heat where desired.

Image: The Dreo Wall Heater demonstrating its 120-degree vertical oscillation feature, distributing heat across a wider area.
5.6 Adjustable Thermostat
Use the '+' and '-' buttons to set your desired temperature between 41°F and 95°F. The heater will automatically maintain this temperature.
5.7 24-Hour Timer
Press the timer button (🕔) to set an auto-off timer from 1 to 24 hours. This allows for scheduled operation.
5.8 Remote Control
The included remote control provides convenient access to all heater functions from a distance.
5.9 App Control Features
The Dreo app offers comprehensive control:
- Display Settings: Adjust display brightness (Auto, On, Off).
- Panel Sound: Mute or unmute button sounds.
- Child Lock: Lock device buttons to prevent unintended operation.
- Open Window Detection: Receive notifications if ambient temperature drops rapidly while the device is running.
- Ambient Temp Always On: Choose to always display ambient temperature.
- Temperature Unit: Switch between Fahrenheit and Celsius.
- Ambient Temp Calibration: Calibrate the temperature sensor for accuracy.
- Schedules: Set up custom heating schedules for timed on/off or specific periods.
Video: This video provides instructions on how to connect the Dreo Smart Wall Heater to WiFi and use the Dreo app for control, including setting schedules and adjusting various preferences.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your heater.
- Cleaning: Always unplug the heater before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or immerse the heater in water.
- Filter: The heater may include a detachable filter. Refer to the full user manual for instructions on cleaning or replacing the filter to maintain air quality and heating efficiency.
7. Troubleshooting
If you encounter issues with your Dreo Smart Wall Heater, refer to the following common solutions:
- Heater Not Turning On:
- Ensure the ALCI plug is fully inserted into a working outlet and the reset button on the plug is pressed.
- Check if the power outlet is functional by plugging in another device.
- Verify the power button on the heater or remote is pressed.
- No Heat Output:
- Confirm the heater is in a heat mode (H1, H2, or H3) and not Fan Only mode.
- Check if the set temperature is higher than the ambient room temperature.
- Ensure air inlets and outlets are not blocked.
- App Connection Issues:
- Ensure your mobile device's Bluetooth is enabled.
- Verify your WiFi network is 2.4GHz (5GHz networks are not supported).
- Restart connection settings by holding the Fan Angle button for 5 seconds.
- To unpair WiFi and restore factory settings, long press the power button for 10 seconds.
- Inaccurate Temperature Reading:
- Ensure the heater's temperature sensor is not obstructed or exposed to direct heat sources.
- Use the Ambient Temp Calibration feature in the Dreo app to adjust the reading if necessary.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Dreo |
| Model Number | DR-HSH009AS |
| Power | 1500W |
| Voltage | 120 Volts |
| Amperage | 12.5 Amps |
| Heating Coverage | 215 sq. ft. (primary), up to 750 sq. ft. (supplementary) |
| Temperature Range | 41°F - 95°F |
| Oscillation | 120° Vertical |
| Dimensions (DxWxH) | 4.72"D x 20.08"W x 13.39"H |
| Item Weight | 9.02 pounds |
| Special Features | Adjustable Temperature, Detachable Filter, On/Off Timer, Remote Control, Wi-Fi Enabled, ALCI Plug |
9. Warranty and Support
Dreo provides a limited warranty for this product. For detailed warranty information, product registration, or technical support, please refer to the official Dreo website or contact customer service.
- Online Support: Visit Dreo Official Store
- Customer Service: Refer to your product packaging or the official Dreo website for contact details.

