Model # MMBT12

Internet #203216377

Store SKU #882021

Store SO SKU #172189

MasterCool 1145 CFM 2-Speed Portable Evaporative Cooler for 600 sq. ft. (with Motor)


1145 CFM 2-Speed Portable Evaporative Cooler for 600 sq. ft. (with Motor)

  • Designed to work in dry/arid climates
  • Is not an air conditioner
  • High quality components at low costs
$69936 /each
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Frequently Bought Together

Product Overview

This MasterCool Mobile Evaporative Cooler is an energy-efficient unit that is ideal for cooling patios, garages and decks. The heavy duty casters and handles make for convenient portability. This powerful cooler comes with a 1/3 HP motor and features 4-way directional grille with moveable vanes to help ensure that cool air is delivered where it is needed. This evaporative cooler performs best in dry, arid climates.

  • Cools up to 600 sq. ft.
  • Circulates air at up to 1145 CFM for powerful cooling
  • 2 speeds for a flexible rate of cooling
  • 1/3 HP motor provides energy efficiency
  • Connects to a standard water hose for ease in filling
  • Heavy duty (lockable) casters provide easy mobility
  • 4-way directional grille with moveable vanes provides cool air in many directions
  • Uses premium polyester media
  • Steel cabinet with durable work tray top provides durability
  • Evaporative cooler is ideal for dry, arid climates
  • Which type of evaporative cooler is best suited for your needs?
  • Areas best suited for evaporative coolers:

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Info & Guides

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Cooling zone (sq. ft.)
Cord Length (in.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Air Volume (CFM)
Amperage (amps)
Cool Sand
Color Family
Beige / Cream
Commercial / Residential
Commercial / Residential
Evaporative Cooler Pad Type
Evaporative Cooler Product Type
Portable Cooler
Horsepower (hp)
1/3 hp
Casters,No additional components or accessories are included
Number of Speed Settings
Product Weight (lb.)
Type of Construction
Voltage (volts)

Warranty / Certifications

Certifications and Listings
1-UL Listed
Manufacturer Warranty
1 year limited

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Customer Questions & Answers

Why does my mastercool blow water out the fan duct

Asked by: Kerry
I don't have that problem. I would think that it may have too much water in it. Did you install the float valve?
Answered by: Jeanne
Date published: 2016-08-04

How to install floater

Asked by: Mar123
Mar123, To change the float, you will first to have to remove the top of the unit. Then you can remove the side panels and replace the float. - Christina Essick Air
Answered by: EssickAirProducts
Date published: 2017-06-23

Need a. Motor for this master cool model mmbt12

Need a. Motor for this master cool model mmbt12
Asked by: Art
Mr. Art, Please contact our office directly at 1(800)643-8341. We would be more than happy to assist you with getting a replacement motor for your MMBT12. Our office hours are from 7:30 AM - 6:00 PM CST Monday through Friday and from 10:00 AM - 3:00 PM CST on Saturday. - Christina Essick Air Products
Answered by: EssickAirProducts
Date published: 2017-05-25

Can I put this outside where it might rain?

Can I put this outside where it might rain?
Asked by: Jo
Jo, This unit is meant to be used in an outdoor setting. As long as the electrical components are protected it should be alright in the rain. - Christina Essick Air Products
Answered by: EssickAirProducts
Date published: 2017-06-02
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Customer Reviews

1145 CFM 2-Speed Portable Evaporative Cooler for 600 sq. ft. (with Motor) is rated 3.4 out of 5 by 20.
Rated 5 out of 5 by from A great buy, using it in my new greenhouse to... A great buy, using it in my new greenhouse to keep a breeze blowing across my orchids and the temps are the best. Keeps enough moisture in the air for growing and propagation of plants.
Date published: 2017-08-09
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-08-02
Rated 5 out of 5 by from Cools my two car garage in Las Vegas I bought this last summer to allow me to continue woodworking in my two car garage/shop throughout the Hellish summers we have here in Las Vegas. It did an excellent job dropping the temperature in the shop to a comfortable 78 - 80 degrees when it was 110 outside. You have to run it with the overhead door open, or it will make the garage so humid that it's unbearable. I learned this lesson when I accidentally left it running once with the doors closed when I had to leave the house for a couple of hours(reminded me of a trip to Houston in mid-August, 110F with 100% humidity.) I like that it has wheels and I can move it around easily. On really hot days, I'm able to always be in the cool air flow no matter what tool station I'm using. The top has drink holders as well as a handy tray. I run mine connected to my garden hose so it has a continuous water supply (better than filling the tank every couple of hours). I had a little trouble at first with the "toilet float style" auto shut off switch not shutting off when the tank was full, but once I tightened it up, everything worked as it should. Note: I also stick a couple small fans in the back corners of my garage to keep the air circulating around. The fans are pretty good, but once the temp reaches 85 or so, out comes the swamp cooler. Don't be afraid of the negative reviews on this product. If you have the right climate (Desert Southwest), and understand how evaporative cooling works, it's a great solution to an unbearably hot garage/shop. This product extended my woodworking season by 3 months last year. Before I got this cooler, I used to have quit working in the garage by the middle of June and wait until September/October to get back to it again.
Date published: 2013-03-02
Rated 4 out of 5 by from Excellant I live in phoenix. And this makes my house freezing cold. We have to go outside to warm up. Of course with these, you do know you have to keep door and some windows open to let hot air escape. It does not do my whole house because walls jut out and block air flow. But it makes my living room and kitchen freezing cold. We did use sm. plastic tubing to connect to contin. water supply.
Date published: 2012-05-08
Rated 5 out of 5 by from I am happy! Ok. I read all the reviews before I purchased this cooler. It was so hot where I live that I had to do something. A portable unit was my only option since I rent. I am a 65 year old woman. I live by myself. I was able to unload and assemble the unit with no assistance. (Of course I had to remove the panels to lighten the unit and be creative to unload it from my truck!) I got the thing assembled. Hooked up the water. Turned the pump on for a bit to moisten the pads. Adjusted windows, closed some doors. Turned on the cooling function and relished the cold air. It did get humid and the cooling slowed down. So I adjusted the windows a little more and voila, my 1000 square foot area got so cold I had to turn the unit on low. Adjusted the windows a little to allow for change in air flow. A while later, I had to turn it off for awhile cause I was cold. So yes, I am happy. Evaporative coolers need ventilation. The unit has to have fresh air flow, otherwise it is trying to cool already humid air. Doesn't work that way. I have the unit by a window, open enough to allow plenty of fresh air. The space also needs to be vented for the humid air to escape, preferably in the direction that you want the cold air to flow. It is a simple concept. Those that did not have success, just needed to make some adjustments. Just take a little time to find out how your space needs to be vented. Fresh air and a place to exhaust the humid air. Easy. I know I am going to enjoy my cold air!
Date published: 2016-06-27
Rated 2 out of 5 by from Not the greatest, and uses a poor motor design This product works great at first. Good air flow on high speed, but very poor on low speed. This is a 1/3 H.P. , 2 speed motor, which uses a big capacitor to get the motor going. Third year I had this unit and capacitor and motor burned up. An electrician friend looked at it and laughed at the cheap motor/capacitor configuration. Replacement motor is $240 plus shipping and you still need the capacitor. Motor mounting is also different and a problem is the motor burs up. By the time you replace the motor, capacitor, and buy an adapter mounting bracket for the motor you are over $300 and if you replace the filters, add another $100. Not worth the money for how long it lasted, and my electrician said it would only last about the same if I replaced it. They should have a bigger motor on all their portable units. The larger unit with the 1/2 H.P. motor is better, standard design, with easily replacable parts.
Date published: 2015-04-30
Rated 5 out of 5 by from great cooler I use it in the garage and around the yard/house outside to move cooler air as i am doing jobs around the house/yard. it tuff getting older.
Date published: 2014-05-25
Rated 5 out of 5 by from Works like a champ! It is summer time in Phoenix AZ and it is hot! The heat had me concerned for the welfare of my girls (chickens) so I purchased a Mastercool 1145 CFM 2-speed portable evaporative cooler from Home Depot. It keeps the coop nice and cool. No more worries - it works like a champ!
Date published: 2015-07-14
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