1. Introduction
This manual provides comprehensive instructions for the safe and efficient operation, maintenance, and troubleshooting of your Uthfy 48-inch 6500 CFM Evaporative Air Cooler. Please read this manual thoroughly before initial use and retain it for future reference. Proper use and care will ensure optimal performance and longevity of your unit.
2. Important Safety Instructions
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and injury.
- Read all instructions before operating the appliance.
- Ensure the power supply matches the voltage specified on the appliance's rating label.
- Do not operate the cooler with a damaged cord or plug. If the cord or plug is damaged, contact qualified service personnel.
- Do not place the cooler near heat sources, open flames, or flammable materials.
- Always unplug the appliance before cleaning, servicing, or moving it.
- Do not immerse the appliance, cord, or plug in water or other liquids.
- Keep children and pets away from the appliance during operation.
- Use the appliance only on a stable, level surface to prevent tipping.
- Do not block air inlets or outlets. Maintain adequate clearance around the unit for proper airflow.
- Only use clean water in the water tank. Do not add any chemicals or additives other than recommended by the manufacturer.
- Ensure the water tank is securely closed before operating the unit.
3. Product Overview
The Uthfy 48-inch Evaporative Air Cooler is designed to provide efficient cooling for large indoor and outdoor spaces. It features a robust metal construction, a large water tank, and multiple cooling pads for enhanced performance.
Key Components
- Control Panel: Mechanical buttons for fan speed, cooling, and oscillation.
- Air Outlet: Front louvers for directing airflow.
- Cooling Pads: Three high-capacity cooling pads located on three sides for maximum evaporation.
- Water Tank: 19-gallon capacity for extended operation, with a clear water level window.
- Caster Wheels: Four heavy-duty 360° rotatable casters (two with locking mechanism) for easy mobility.
- Water Inlet: Top and front access for manual water filling, and a garden hose connection for continuous filling.
- Drain Plug: Located at the bottom for easy water drainage and cleaning.

Image 3.1: Overview of the Uthfy 6500 CFM Evaporative Air Cooler, highlighting its large volume, power input, tank size, speeds, and ice pack compatibility.

Image 3.2: Illustration of the three large cooling pads designed to accelerate cooling air.
4. Setup Instructions
4.1 Unpacking
- Carefully remove the evaporative air cooler from its packaging.
- Remove all packing materials, including any protective films or tapes.
- Check for any damage that may have occurred during shipping. If damage is found, do not operate the unit and contact customer support.
4.2 Placement
Place the air cooler on a firm, level surface. Ensure there is adequate space around the unit (at least 20 inches) for proper air circulation. This unit is suitable for both indoor and outdoor use, including patios, garages, and workshops.

Image 4.1: The Uthfy evaporative air cooler positioned in different environments, demonstrating its portability and versatility.
4.3 Filling the Water Tank
The unit offers multiple ways to fill the 19-gallon water tank:
- Manual Top Fill: Open the top cover and pour clean water directly into the tank.
- Manual Front Fill: Access the front water inlet to manually add water.
- Continuous Fill (Garden Hose): Attach a standard garden hose to the designated inlet for continuous water supply. An adapter is included for this purpose.
Monitor the water level through the clear window to avoid overfilling or running dry. For optimal cooling, ensure the water level is always above the minimum mark.

Image 4.2: Detailed view of the 19-gallon water tank and its dual filling options: manual top fill and continuous garden hose connection.

Image 4.3: Visual guide on how to add water and ice packs for enhanced cooling performance.
4.4 Using Ice Packs
For an extra cooling boost, freeze the included ice packs and place them into the upper water tank. This will help lower the water temperature and provide colder airflow.
5. Operating Instructions
5.1 Control Panel
The Uthfy Evaporative Air Cooler features mechanical controls for straightforward operation.

Image 5.1: Detail of the simple control buttons on the unit's panel.
5.2 Power On/Off
Plug the power cord into a suitable electrical outlet. Use the main power switch on the control panel to turn the unit on or off.
5.3 Adjusting Fan Speed
Press the 'Speed' button to cycle through the three available fan speeds: Low, Medium, and High. Select the speed that best suits your cooling needs.
5.4 Activating Cooling Mode
Press the 'Cool' button to activate the evaporative cooling function. Ensure the water tank is filled before engaging this mode. The unit will begin to draw water from the tank to moisten the cooling pads, producing a cooler airflow.
5.5 Oscillation Function
Press the 'Oscillation' button to activate the 120° wide-angle oscillation feature. This distributes cool air evenly across a larger area. Press the button again to stop oscillation at your desired direction.

Image 5.2: The cooler generating a fast breeze with 120-degree wide oscillation.
5.6 Operational Videos
Video 5.1: This video demonstrates the 48-inch swamp cooler's features, including its 19-gallon water tank, manual adjustment of airflow, ultra-wide chill airflow with 120-degree oscillation, and auto-fill capability with an included adapter.
Video 5.2: This video showcases the Uthfy 6500 CFM outdoor swamp cooler, highlighting its effortless movement with caster wheels and multiple airflow options with three speeds.
Video 5.3: This video illustrates the Uthfy 6500 CFM swamp cooler for indoor and outdoor use, demonstrating two ways of adding water (top-filling and bottom-filling) and the button controls for adjustable wind direction.
6. Maintenance
Regular maintenance ensures the efficiency and longevity of your evaporative air cooler.
6.1 Cleaning the Water Tank
- Unplug the unit from the power outlet.
- Locate the bottom drain plug and remove it to empty the water tank.
- Rinse the tank with clean water. For stubborn deposits, use a soft brush and mild detergent.
- Ensure all detergent residue is thoroughly rinsed before reinserting the drain plug.

Image 6.1: View of the cooling pads inside the unit, which require periodic cleaning.

Image 6.2: A hand removing the drain plug from the bottom of the unit for water drainage.
6.2 Cleaning Cooling Pads
The cooling pads should be cleaned periodically, especially if you notice reduced airflow or an odor.
- Unplug the unit.
- Refer to the product diagram to locate and carefully remove the cooling pad panels.
- Rinse the cooling pads under running water to remove dust and mineral deposits. Do not use harsh chemicals.
- Allow the pads to air dry completely before reinstalling them.
6.3 Exterior Cleaning
Wipe the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners or solvents.
6.4 Storage
If storing the unit for an extended period, ensure the water tank is completely drained and dry. Clean the cooling pads and exterior. Store the unit in a cool, dry place, away from direct sunlight and extreme temperatures.
7. Troubleshooting
Before contacting customer support, please refer to the following troubleshooting guide for common issues.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on | No power supply Power cord not securely plugged in Main power switch off | Check power outlet Ensure power cord is fully inserted Turn on the main power switch |
| No cooling effect | Water tank empty Cooling mode not activated Cooling pads are dry or clogged | Fill water tank Press the 'Cool' button Clean or replace cooling pads |
| Weak airflow | Air inlets/outlets blocked Fan speed set too low Cooling pads are dirty | Clear obstructions Increase fan speed Clean cooling pads |
| Unpleasant odor | Stagnant water in tank Dirty cooling pads | Drain and clean water tank Clean cooling pads |
| Water leakage | Drain plug not secured Overfilled water tank Unit not on a level surface | Ensure drain plug is tightly closed Do not overfill; check water level Place unit on a flat, stable surface |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Uthfy |
| Model Number | JH-50AI-1 |
| Air Flow Capacity | 6500 Cubic Feet Per Minute (CFM) |
| Reservoir Capacity | 19 Gallons |
| Number of Speeds | 3 (Low/Med/High) |
| Oscillation | 120° Wide-Angle |
| Wattage | 350 watts |
| Voltage | 120 Volts |
| Noise Level | 45 Decibels |
| Item Dimensions (D x W x H) | 18.3"D x 26"W x 48.3"H |
| Item Weight | 59.5 Pounds |
| Material | Metal |
| Mounting Type | Freestanding |
| Controls Type | Mechanical controls |
| Included Components | User Manual, 5 Ice Packs |
9. Warranty Information
This Uthfy Evaporative Air Cooler is covered by a 1-year manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, accident, alteration, neglect, or unauthorized repair.
Please retain your proof of purchase for warranty claims.
10. Customer Support
If you have any questions, require assistance, or encounter issues not covered in this manual, please contact Uthfy customer support. For efficient service, please have your model number (JH-50AI-1) and purchase information ready.
Contact information can typically be found on the product packaging, warranty card, or the official Uthfy website.