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MasterCool RMMB14 portable swamp cooler

MasterCool RMMB14 Portable Swamp Cooler

Model: RMMB14 | SKU: ma2739
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  • Product Overview

    The MasterCool RMMB14 Portable Evaporative Cooler by Essick Air is a premium, large-capacity swamp cooler that covers as much as 1,400 square feet and cools with up to 4,000 cubic feet per minute (CFM). Durable and superbly engineered, this model is used in such commercial spaces as dry cleaners, warehouses, kitchens, loading docks, and kennels, in addition to residential homes and yards. Expect a drop in temperatures as high as 30 degrees, which is well above the average of most residential swamp coolers. This model is made for hot, arid climates; it adds humidity to the air. 

    Superior Engineering for High-Power Cooling

    The MasterCool RMMB14 Portable Swamp Cooler has a CFM of 4,000. This means that every minute, as much as 4,000 cubic feet of air passes through the cooler. With this airflow rate, you can expect a complete replacement of the air in your cooling space every few minutes.

    It’s a misconception that higher horsepower motors are always better; in the case of evaporative coolers, a powerful blower paired with a low-horsepower motor yields better results than a smaller model with more horsepower would. Consisting of a 1/8-horsepower motor, the MasterCool RMMB14 takes advantage of this engineering principle.

    Its rigid cooling pads are made out of durable, corrugated cellulose and treated with insoluble salt to resist rotting. These types of pads generally last longer, prove more efficient, and hold more water than their common alternative, aspen pads.

    Versatile and Portable Capabilities

    Unlike window models, this portable swamp cooler rolls on casters for easy transport. It works indoors and outdoors. Use your MasterCool RMMB14 as a swamp cooler or fan by adjusting a simple control. When in fan mode, it has a high setting and a low setting. It also has a 4-way directional air grille, giving you more control over airflow direction for wider coverage. Quiet operation means that you can put it in places such as your yard or workplace without worrying about noise.   

     Additional Features

    • Auto Shut-Off—If the motor overheats, the MasterCool RMMB14 automatically shuts off, and then turns back on once the motor has cooled down.
    • Use Hose or Water Reservoir—You can choose between filling the 11-gallon water tank, or simply attaching your cooler to a water hose.
    • Uses No Chemicals—This swamp cooler doesn’t use any of the chemicals found in AC units, such as Freon, making it more eco-friendly.


    The MasterCool RMMB14 is a high-capacity 4,000-CFM portable swamp cooler that works in both commercial and residential spaces, outdoors and in, cooling up to 1,400 square feet.

    What Customers Love

    • Durability—This swamp cooler is housed in steel, which is shielded by a corrosion-resistant powder coating, meaning it will stand up to tough conditions over time. 
    • Uses 75% Less Energy Than an AC—Because this swamp cooler uses so much less energy than a typical air conditioning unit, you’ll see lower energy costs.
    • Supplies Natural, Fresh Air—If you prefer the feeling of soft, natural air, rather than that which is recirculated by AC units, you’ll enjoy the steady breeze of outdoor air provided by this swamp cooler.

    Things to Consider

    • Works Best in the Right Conditions—The MasterCool RMMB14 Portable Evaporative Cooler is like other swamp coolers in that it will only work well in low-humidity climates. Additionally, indoor use will require ready access to outdoor air via open windows or doors.

    Manufacturer's Warranty

    2 Year Limited

    Manufacturer's Literature

    Owner's Manual
    User guide for the MasterCool RMMB14 Portable Evaporative Cooler

    What's In The Box?

    • MasterCool RMMB14 Portable Swamp Cooler
    • Instruction Manual
    • Warranty Card

    View All Swamp Coolers »
  • Specifications

    Evaporative Cooler TypeResidential
    Coverage Area1400 sq. ft.
    Recommended UseIndoor and Outdoor
    Height41.38 in.
    Width35.19 in.
    Depth29.56 in.
    Weight150 lbs.
    Operating Weight242 lbs.
    Number of Fan Speeds2
    Cubic Feet Per Minute (Max CFM)4000 CFM
    Water Reservoir Capacity11 gallons
    Water Level IndicatorNo
    Hose HookupYes
    Remote ControlYes
    Programmable TimerNo
    Adjustable LouversNo
    Oscillating LouversNo
    Germ ProtectionNo
    Voltage110-120 V
    Maximum Amperage10.7 Amps
    Horsepower0.5 hp
    Automatic Overheat ProtectionYes
    Safety CertificationsUL
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