Introduction
The Airthereal AEH300 is a versatile 2-in-1 appliance designed to enhance your indoor air quality and comfort. It combines advanced air purification with efficient humidification, providing a healthier and more pleasant living environment. This manual provides essential information for the proper setup, operation, and maintenance of your device.
Key Features
- 2-in-1 Functionality: Combines air purification and humidification in a single unit.
- Advanced Air Purification: Utilizes 3-layer filtration (Pre-Filter, HEPA Filter, Activated Carbon Filter) to remove pollutants, allergens, and odors.
- Optimal Humidification: Maintains desired humidity levels with a 1.5L water tank and automatic shutoff.
- Integrated Air Quality Monitor: Real-time PM2.5 detection with auto-adjustment of fan speed.
- Quiet Sleep Mode: Operates at a low noise level (24dB) with display lights off for peaceful rest.
- User-Friendly Controls: Features a touch control panel, 1-24 hour timer, and child lock function.
- Compact Design: Suitable for various spaces, measuring 9.45 inches in diameter and 21 inches in height.

Image: Airthereal AEH300 highlighting its 2-in-1 functionality and various features like 3-layer filtration, humidification, timer, sleep mode, and wind speeds.
Setup
1. Unboxing and Initial Placement
Carefully remove the Airthereal AEH300 from its packaging. Place the unit on a flat, stable surface, ensuring adequate space around it for optimal air circulation.
2. Filter Installation
The unit comes with pre-installed filters. Before first use, ensure all protective packaging is removed from the filters.
- Rotate the lid clockwise to open the top section of the air purifier.
- Remove the old filter (if replacing).
- Install the new filter, ensuring it is seated correctly.
- Turn the lid counter-clockwise to secure it.

Image: Visual guide showing four steps to replace the air purifier filter: rotating the lid, removing the old filter, installing the new filter, and securing the lid.
3. Water Tank Filling (for Humidifier Function)
The AEH300 features an easy top-fill design for the humidifier.
- Simply pour clean water directly into the spacious top opening of the unit.
- Fill up to the MAX 1.5L (3 Pints) line.

Image: A hand pouring water directly into the top of the Airthereal AEH300, demonstrating the easy top-fill design for the humidifier function.
4. Power Connection
Plug the power cord into a suitable electrical outlet.
Operating Instructions
1. Control Panel Overview
The intuitive touch control panel allows easy adjustment of settings. The digital display shows real-time information such as PM2.5 levels and humidity percentage.

Image: The main product view of the Airthereal AEH300, showing its sleek design and the digital touch control panel on the front.
2. Power On/Off
Press the power button on the control panel to turn the unit on or off.
3. Auto Mode
In Auto Mode, the unit's PM2.5 real-time sensor detects indoor air quality and automatically adjusts the fan speed (from level 1 to 4) to maintain optimal air purity.

Image: Diagram illustrating the Auto Mode, where the PM2.5 sensor detects air quality and the unit automatically adjusts fan speed for fresh air.
4. Sleep Mode
Activate Sleep Mode for whisper-quiet operation (24dB) and the display lights will turn off, ensuring a peaceful resting environment.

Image: A child sleeping peacefully next to the Airthereal AEH300, illustrating its whisper-quiet Sleep Mode (24dB) with the display light off.
5. Fan Speed Adjustment
Manually adjust the fan speed to one of the 4 available levels to suit your preference.
6. Humidity Control
The humidifier maintains optimal humidity levels, helping to alleviate dryness. It features automatic shutoff when the water tank is empty.

Image: A woman relaxing in a room with the Airthereal AEH300, highlighting its humidification function with continuous mist and automatic shutoff.
7. Timer Function
Set the unit to operate for a specific duration using the 1-24 hour timer function.
8. Child Lock
Activate the child lock feature to prevent accidental changes to settings.
Maintenance
1. Air Purifier Filter Replacement
When the display shows "F0" and the red indicator flashes, it's time to check and replace the air filter. After replacement, press and hold the fan button for 3 seconds to reset the reminder.

Image: A four-step visual guide for replacing the air purifier filter, including rotating the lid, removing the old filter, installing the new filter, and securing the lid.
2. Humidifier Filter Replacement
Replace the humidifier filter every 6 months for optimal performance.

Image: A five-step visual guide for replacing the humidifier filter, including opening the lid, twisting to unlock and remove, inserting the new filter, twisting to lock, and closing the lid.
3. Cleaning the Unit
Wipe the exterior of the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
Specifications
- Model: AEH300
- ASIN: B0F43G54J3
- Date First Available: April 8, 2025
- Water Tank Capacity: 1.5L (3 Pints)
- Max Water Output: 300ml/h
- Noise Level (Sleep Mode): 24dB
- Coverage Area: 500-1325 sq ft
- CADR: 300 m³/h
- Dimensions: 9.45 x 9.45 x 21 inches
Warranty and Support
For warranty information, technical support, or any inquiries regarding your Airthereal AEH300, please refer to the official Airthereal website or contact their customer service directly. Keep your purchase receipt for warranty claims.





