The MasterCool MMBT12 Portable Swamp Cooler cools areas up to 600 square feet at 1,145 cubic feet per minute (CFM). Durable and superbly engineered, this model is ideal for use in workshops, patios, garages, and decks. Plus, it features a convenient direct hose hookup, a 2-speed fan, and 4-way directional louvers to maximize performance.
Unlike refrigerant air conditioners, which cool using a refrigerant gas system, the MasterCool MMBT12 uses the natural process of water evaporation. First, hot air is drawn into the evaporative cooler through the unit vents and passed through a damp evaporative cooling pad. When the moving air is brought into contact with the water-saturated pad, evaporation occurs as the heat from the hot air causes water molecules to transform into a gas. The evaporative cooling pad absorbs the heat out of the air while a powerful fan disperses fresh, cool air throughout your space.
Versatile and Portable
This portable swamp cooler rolls on casters for easy transport. It works both indoors and outdoors and even functions as a fan by adjusting a simple control. In fan mode, it has a high setting and a low setting. It also has a 2-speed fan with a 4-way directional air grille, giving you more control over airflow direction for wider coverage. Quiet operation means you can use it in your yard or workplace without worrying about excessive noise.
Fan-Only Mode—Operate the MMBT12 without the pump when only a fan is desired.
Use Hose or Water Reservoir—Choose between filling the 8-gallon water tank or simply attaching your cooler to a water hose for continuous filling.
Uses No Chemicals—This evaporative cooler doesn’t use any of the chemicals found in AC units, such as Freon, making it more eco-friendly.
Uses 75% Less Energy Than an AC—Because it uses much less energy than a typical air conditioning unit, you’ll see lower energy costs
Supplies Natural, Fresh Air—Provides a steady breeze of cooled outdoor air.
The MasterCool MMBT12 is a 2-speed indoor/outdoor cooler that's ideal for cooling areas up to 600 square feet.
What Customers Love
Budget- and Eco-Friendly - This unit uses minimal electricity to cool your space, so it's easier on the environment and your power bill.
Things to Consider
Works Best in the Right Conditions—This model works best in low-humidity climates. Additionally, indoor use requires ready access to outdoor air via an open door or window.