1. Introduction
The Big Ass Fans Cool-Space 300 is a portable evaporative cooler designed to provide efficient cooling for various indoor and outdoor environments, including workshops, garages, and studios. This manual provides essential information for the safe and effective setup, operation, and maintenance of your unit.
The Cool-Space 300 features an 18-inch (46-cm) fan diameter, 8-inch (20-cm) cooling media, and a 16-gallon (62-liter) water reservoir, capable of cooling areas up to 1,200 ft² (110 m²).

Image 1.1: Front view of the Cool-Space 300 unit, highlighting the fan and control panel.
2. Setup
2.1 Unpacking and Placement
Carefully remove the Cool-Space 300 from its packaging. Ensure all components, including the cooling media and wheels, are present and undamaged. Position the unit on a stable, level surface. The integrated locking swivel casters allow for easy relocation.
2.2 Water Connection
The Cool-Space 300 offers two water supply options:
- Continuous Supply: Connect a standard garden hose to the unit's water inlet for uninterrupted operation.
- Fillable Reservoir: The 16-gallon (62-liter) reservoir provides up to 4 hours of cooling without a direct hose connection, offering maximum portability.

Image 2.1: Side view showing the garden hose connection point for continuous water supply.
2.3 Power Connection
Connect the power cord to a standard 120-volt electrical outlet. Ensure the outlet is provided with a Ground Fault Circuit Interrupter (GFCI) device to reduce the risk of electric shock.
3. Operating Instructions
3.1 Control Panel Overview
The control panel is located on top of the unit and features a variable-speed fan dial and a pump on/off switch.

Image 3.1: Detail of the control panel with fan speed dial and pump switch.
3.2 Starting the Unit
- Turn the FAN dial from OFF to the desired speed setting. The fan will begin to operate.
- Flip the PUMP switch to the ON position to activate the water pump and begin the evaporative cooling process.
Important: At shutdown, run the fan for 15 minutes with the pump off to allow the cooling media to dry, which helps prevent mold and mildew growth.
3.3 Automatic Low-Water Shutoff
The unit is equipped with an automatic low-water shutoff feature. If the water level in the reservoir becomes too low, the pump will automatically turn off to prevent damage. Refill the reservoir or connect a continuous water supply to resume pump operation.
4. Maintenance
Regular maintenance ensures optimal performance and longevity of your Cool-Space 300 unit.
4.1 Cleaning the Cooling Media
The 8-inch thick cooling media is treated to resist unwanted growth. However, periodic cleaning is recommended. Refer to the 'Care instructions' in the specifications for guidance. The media can be accessed from the rear of the unit.

Image 4.1: Rear view of the unit, displaying the cooling media.
4.2 Draining the Reservoir
An accessible drain plug is provided for easy maintenance and draining of the 16-gallon reservoir. Regularly drain and clean the reservoir to prevent stagnant water issues.
4.3 Storage
Before storing the unit for extended periods, ensure the reservoir is completely drained and the cooling media is dry. Store in a clean, dry location.
5. Troubleshooting
This section addresses common issues you might encounter with your Cool-Space 300.
- Unit Not Cooling Effectively:
Ensure the water pump is ON and the reservoir has sufficient water. Check that the cooling media is wet. In areas with very high humidity, evaporative coolers may be less effective. - Water Dripping from Unit:
Adjust the water flow rate if using a continuous supply. Ensure the unit is level. Check for any obstructions in the water distribution system. - Pump Not Operating:
Verify the pump switch is ON. Check the water level in the reservoir; the automatic low-water shutoff may have activated. Ensure the power cord is securely plugged in. - Fan Not Operating:
Ensure the fan dial is turned ON and the unit is plugged into a working electrical outlet.
6. Specifications
| Feature | Specification |
|---|---|
| Brand | Big Ass Fans |
| Model Name | Cool-Space 300 |
| Item Model Number | F-EV1-1801 |
| Mounting Type | Portable |
| Product Dimensions | 26"D x 24"W x 48"H |
| Item Weight | 99 pounds |
| Color | Black |
| Air Flow Capacity | 700 Cubic Feet Per Minute |
| Controls Type | Variable Speed Dial, Pump Switch |
| Reservoir Capacity | 16 Gallons |
| Floor Area Coverage | Up to 1200 Square Feet |
| Noise Level | 63 Decibels |
| Number of Speeds | 10 |
| Amperage | 3.58 Amps |
| Voltage | 120 Volts |
| Cooling Media | 8-inch thick, resin-treated, GreenGuard Gold certified |
| Housing Material | UV-resistant, roto-molded polyethylene |

Image 6.1: Unit dimensions for the Cool-Space 300.
7. Warranty and Support
The Big Ass Fans Cool-Space 300 comes with a 5-Year Warranty on the Main Fan Unit. For warranty claims, technical assistance, or general inquiries, please refer to the official Big Ass Fans website or contact their customer support directly.
For additional information and resources, visit the Big Ass Fans Store on Amazon.





