1. Introduction
Thank you for choosing the Uthfy 3 In 1 Swamp Cooler. This evaporative air cooler is designed to provide efficient and refreshing cooling for both indoor and outdoor spaces. It functions as an air cooler, fan, and humidifier, offering versatile comfort. Please read this manual thoroughly before operation to ensure safe and optimal performance of your unit.

Image: Front view of the Uthfy 3 In 1 Swamp Cooler, showcasing its compact and portable design with wheels.
2. Important Safety Instructions
- Always place the unit on a stable, level surface.
- Do not operate the cooler with a damaged cord or plug.
- Ensure proper ventilation when operating the unit, especially in enclosed spaces like garages, to prevent excessive humidity buildup.
- Do not immerse the unit in water or other liquids.
- Unplug the unit from the power outlet before cleaning, maintenance, or when not in use.
- Keep children and pets away from the unit during operation.
- Use only clean water in the reservoir.
3. Included Components
Your Uthfy 3 In 1 Swamp Cooler package should include:
- Uthfy Swamp Cooler Unit
- Remote Control
- Casters (Wheels) for assembly
- Instruction Manual
4. Setup Guide
4.1 Attaching the Casters
The unit comes with casters for easy mobility. Carefully tilt the unit and insert the casters into the designated slots at the bottom. Ensure they are securely locked in place.

Image: Close-up of a 360-degree rotating caster wheel, indicating easy maneuverability.
4.2 Filling the Water Tank
The Uthfy Swamp Cooler features a large 13.5-gallon water tank. For initial use, fill the tank with clean, cool water. You can monitor the water level using the indicator on the side of the unit.

Image: Detailed view of the water level indicator on the side of the cooler, showing MIN and MAX fill lines.
4.3 Continuous Water Supply Connection
For extended operation, the unit can be connected to a standard garden hose for continuous water supply. Connect the hose to the designated inlet at the back of the unit. It is recommended to use a stress relief mechanism, such as a gear tie, to secure the hose and prevent accidental disconnections or damage to the plastic fitting.
Note: The video demonstrates a user-added 90-degree elbow and shut-off valve for enhanced hose management and safety, preventing strain on the unit's plastic connection.
5. Operating Instructions
The control panel on top of the unit allows you to manage all functions. You can also use the remote control for convenience.

Image: Uthfy 44 Inch Swamp Cooler with icons highlighting key features: 13.5 Gal Water Tank, 1-12H Timer, Remote Control, 120° Oscillation, 3 Speeds & 3 Modes.
5.1 Control Panel Overview
- Pump: Turns the water pump ON/OFF. When ON, water circulates over the cooling pads for evaporative cooling.
- Fan: Adjusts fan speed (Low, Medium, High).
- Swing: Activates the 120° oscillation function for wider air distribution.
5.2 Fan Speed and Airflow
Select your desired fan speed (L, M, H) based on your cooling needs. The unit provides high-volume airflow, up to 3800 CFM, suitable for large spaces up to 1000 sq. ft.

Image: Diagram illustrating high-volume airflow from the swamp cooler, suitable for large areas like a patio with a pool.

Image: Icon showing arrows indicating multi-directional airflow, representing the swing function.
5.3 Evaporative Cooling Function
When the pump is ON, water is distributed over the 3-side cooling pads. As air passes through these wet pads, it evaporates the water, leading to a significant drop in air temperature. This process provides cool, humidified air.

Image: Cutaway diagram of the swamp cooler, showing warm air entering, passing through cooling pads, and cool air being expelled, with a 13.5-gallon water tank at the base.
5.4 Timer Function
Utilize the 1-12 hour timer to set the desired operating duration, allowing for energy savings and convenience.

Image: Icon displaying "12H Timer", indicating the unit's programmable timer feature.
5.5 Importance of Ventilation
For optimal cooling performance and to prevent excessive humidity, it is crucial to operate the swamp cooler in a well-ventilated area. Do not use in sealed rooms or garages without open windows or doors, as this will increase humidity and reduce cooling effectiveness. Evaporative coolers work best in dry climates with good airflow.
6. Maintenance
Regular maintenance ensures the longevity and efficiency of your Uthfy Swamp Cooler.
- Cleaning Cooling Pads: Periodically inspect the cooling pads for mineral buildup or white residue. If visible, the pads may need cleaning or replacement to maintain optimal airflow and cooling efficiency. Refer to the product manual for specific cleaning instructions for the pads.
- Water Tank Cleaning: Drain and clean the water tank regularly to prevent mold, mildew, and bacterial growth.
- Bacteriostatic Additive: To keep the water fresh and prevent bacterial growth, consider adding a bacteriostatic humidifier treatment to the water tank, especially during prolonged use.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|
| Unit not turning on | No power supply; Power switch OFF | Ensure unit is plugged into a working outlet. Turn the power switch ON. |
| No cool air / Poor cooling | Low water level; Pump OFF; High humidity; Dirty cooling pads | Fill water tank; Turn pump ON; Ensure adequate ventilation; Clean or replace cooling pads. |
| Water spitting/leaking from unit | Overfilled water tank; Unit not level; Damaged pump/hose connection | Do not overfill; Place on a level surface; Inspect pump and hose connections for damage or loose fittings. |
| Pump not working | Low water level; Pump malfunction | Ensure water level is above MIN mark; Contact customer support if pump is faulty. |
8. Product Specifications
| Feature | Specification |
|---|
| Brand | Uthfy |
| Model Name | swamp cooler (LFJ-03A) |
| Mounting Type | Freestanding |
| Special Feature | Adjustable Speed |
| Color | Grey |
| Air Flow Capacity | 3800 Cubic Feet Per Minute |
| Controls Type | Remote |
| Reservoir Capacity | 13.5 Gallons |
| Wattage | 120 watts |
| Noise Level | 45 dB |
| Product Dimensions | 19.29"D x 15.16"W x 43.31"H |
| Voltage | 120 Volts |
| Item Weight | 23.1 pounds |
| UPC | 774882975526 |
| Country of Origin | China |
9. Warranty and Support
The Uthfy 3 In 1 Swamp Cooler comes with a 1 Year Manufacturer Warranty. For warranty claims, technical support, or any questions regarding your product, please contact Uthfy customer service. Keep your purchase receipt as proof of purchase.