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Cool-Space 400

Cool-Space 400 is rated 4.8 out of 5 by 180.
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Estimated Ship Date: April 5

  • Perfect for production facilities, covered outdoor dining, and gyms up to 3,600 ft2 (330 m2)
  • 36-inch (91-cm) fan diameter
  • 8-inch (20-cm) media
  • 46-gallon water reservoir
  • 5-year warranty
  • Variable-speed motor (61 dBA)

Heat can cripple your facility’s production and put your people at risk. For a rapid, effective response, rely on Cool-Space evaporative coolers. Combining powerful, quiet direct-drive fan technology with a water supply and saturated cooling medium, Cool-Space delivers instant airflow that lowers the air temperature of your space by up to 33 °F (18 °C), creating comfortable conditions that keep your people safe and productive.

  • Quiet, efficient variable-speed motors
  • Thick, resin-treated cooling media
  • Uses standard 110 V power supply
  • Internal water reservoir supplied by standard garden hose
  • Suitable for indoor and covered outdoor spaces
  • Industry-leading 5-year warranties


Cool-Space coolers are designed with the industry’s most effective and longest-lasting cooling media. Thicker than competing products’, Cool-Space's media evaporates more heat from your space for a greater cooling effect. The media has been chemically treated and coated in a thermosetting resin to resist the growth of algae and mold, hold up to frequent cleanings, and prevent dirt and other particles from penetrating into the substrate.


A standard garden hose is all that’s required for each Cool-Space cooler’s water supply. For facility managers who need maximum portability for immediate spot-cooling, Cool-Space coolers feature large internal reservoirs that can run for hours without being connected to a water source.


Cool-Space 500 features a control panel with backlit LCD display, premium remote, and occupancy sensor for hands-free operation. The model’s Auto-Dry feature maintains the unit after each use, extending the life of the cooling media and keeping your cooler in peak condition.


Cool-Space coolers feature virtually silent direct-drive motors and variable-speed controls that allow you to deliver precise cooling throughout your facility for a fraction of the cost of traditional A/C. With a range of sizes and horsepowers, Cool-Space motors offer the perfect combination of power and efficiency to keep your space comfortable, whether you work in a two-car garage or a massive warehouse.

Rated 5 out of 5 by from This WORKs Great! Looks like your engineers were spot on. Two Units can do our job beautifully. We are finally getting some warm weather and had a chance to test them out. They work even better than expected. I was leery of using one in an office environment with people on the phone and working with customers. No problem though. Is it loud? Sort of, I can hear it but, I can use the phone, speak in a normal tone and hear just fine. The big thing is it’s cool. You said it can drop the incoming air temperature 20 degrees, yes it can, we measured the temperature and it went to 22 degrees about 6 feet in front of the outflow. The 300 is more than adequate for our 1100 square foot office and the 500 should handle our 1800 square foot bindery just fine. We did measure a 12% rise in humidity from 24% to 36%. That’s great! We are a print shop and static is an ongoing problem. 40% to 50% is ideal for us but, 36% keeps the static problem in check quite well. Our Big Ass Fans do the job for us and we expect to finally have a comfortable summer.
Date published: 2021-06-17
Rated 5 out of 5 by from A Cold Front in the Summer!! I was skeptical before the Cold Front arrived. Because it has been a hot June in Louisiana and a cold front is too rare. But the BAF Cold Front 400 has been everything we wanted and more.
Date published: 2021-06-25
Rated 4 out of 5 by from Works well for the patio …but Love BAF products and own many. BUT I made an assumption here - BAF is known for its superior engineering that leads to exceptionally quiet fans. THIS IS NOT Close to Quiet. A near silent hum of a motor is about 45 decibels. This is 75- I missed this in the description. You can not talk to someone if they are near this fan. It also has a “turbo fan” sound (TWO) that is really cool as a workshop sound but the high speed whirls are annoying for a patio. The quality is great- the sound is a disappointment. Please know the product works as described- it’s just loud.
Date published: 2022-08-03
Rated 5 out of 5 by from Amazing Product with better than expected results! We recently expanded from 30k sq/ft to 90k sq/ft warehouse. By June the inside temps were reaching well into the upper 90's inside making it unbearable for our staff to work comfortably. I reached out to Big Ass Fans for a quote and they sent a sales rep. over the next day. They reviewed the area we were wanting to cool and came back with several options. We chose (2) of the Cool-Space 400's to circulate the air. Within hours of installation they had cooled the inside temp dramatically and everyone was happy!!! We could not be more pleased with our purchase! Not to mention their customer service is also A+. I would recommend this product to anyone wanted an instant solution and a cooler work environment!
Date published: 2023-01-20
Rated 5 out of 5 by from Awesome Product Have always been a "fan" of the larger Big A** Fans, didn't know they were selling the swamp coolers until recently. We had a hot spell recently and we were able to buy and receive the 500 Cold Front for our shop in a matter of days. Awesome sales group who recommended the perfect size for what our team needed.
Date published: 2021-04-13
Rated 5 out of 5 by from Great Setup! We purchased 3 of these units for our shops and they have been working great so far, and our mechanics have provided a lot of great feedback on the machines.
Date published: 2021-07-29
Rated 5 out of 5 by from Superb Cooling Fan! Our company bought these fans for our warehouse employees for the hot, humid Southeastern summers. These fans have turned our suffocating warehouses into a pleasurable work environment. They are easy to set-up, easy to clean and easy to use. These fans bring a much needed relief to our workers and has dramatically improved their demeanor during these tough summer months. I highly recommend this product.
Date published: 2021-06-25
Rated 5 out of 5 by from Dependable, great service and backing. Here in Arizona fans and swamp coolers are a necessity in the summer. We wouldn't get much production from our welders without them. The amount of cooler air pushed through weld cells and larger projects outside is great. We have overhead ceiling fans and swamp coolers; the backing/follow up and service from Big Ass fans has been phenomenal.
Date published: 2022-12-06
Rated 5 out of 5 by from Works Great! Bought for our fitness center, we converted an old basketball gym into a workout facility. This works great to give our members cold air on hot days.
Date published: 2021-11-11
Rated 1 out of 5 by from Doesn't Work We bought the Evaporative Cooler 200, unboxed it and it didn't work. We requested a new one which was to ship the following week. Then, when we called to check on the ETA, they said it wouldn't ship for several weeks. So, BAF agreed to refund us the money. They would tell us what to do with the new defective cooler that they shipped. Then, the second cooler arrived - this is the cooler that wasn't supposed to ship. Now we have 2 coolers. I asked them to tell us how they want to handle the original cooler return since the packaging was thrown away when we unpacked the original cooler since we expected it to work right off the assembly line. We received a dual RMA, but no instructions on how to ship back the original cooler.Customer service is great when you call them, but there isn't any quality in the follow up on what was agreed upon, time after time.
Date published: 2020-10-20
Rated 5 out of 5 by from Takes the edge off We have been using the product for a year now and the guys love it. We have two units that provide excellent coverage for our shop. On those hot days they put out a nice cool flow of air. Depending on humidity level they drop the air temperature 10-15 degrees. Absolutely takes the edge off.
Date published: 2021-12-07
Rated 5 out of 5 by from Nice and Cool! Great addition to the plant! I purchased two of these units for our production facility. The plant is not air conditioned, so hot and humid days can be a bear in the summer. The units were placed to blow cool air on employees and WOW were they super appreciative of the cooling. The first day the team even said they had to turn it down because it was so cold. They mostly ran the fan on low with the water pump on. Direct water hookup ability is nice to ensure the fan always has water. Overall great purchase and improvement for employee well being.
Date published: 2022-12-05
Rated 5 out of 5 by from Perfect for shop areas Cools shop down enough to work comfortablely in Texas heat
Date published: 2021-09-04
Rated 2 out of 5 by from Not what we expect from BigAss Casters do not go all the way in, so makes it wobbly. Instructions are very bad. To clean you should take out filters, but they are made of paper and they crumble. Impossible to get them out.
Date published: 2020-07-30
Rated 5 out of 5 by from Great addition to our shop. This unit is a great addition to our shop. We are unable to use a ceiling Big Ass Fan, due to the nature of our business. In the Florida heat the fan we have is a blessing. We had one issue with it and replacement parts were sent quickly and under warranty. Changed parts and unit was working fine, until one of my tech moved it to another location and it stopped working correctly. Called tech-support and they went thru some troubleshooting with me and found it was a power source issue, due to using too small of an extension cord. Larger extension cord and hasn't missed a lick since.
Date published: 2022-11-01
Rated 5 out of 5 by from Love us some Big ass fans We have purchased , a hand full of the Cool space 400 . For our mechanic shop here , the guys love them . We had one that the pump went out . It was a phone call and boom we had a new pump here . The customer service IS AMAZING , along with the fans
Date published: 2021-11-08
Rated 5 out of 5 by from It's a beast! Recently purchased 6 of these for our steel fabrication plant and distribution business. Being located in Phoenix AZ the Summer months are brutal for our staff. These made a big difference in productivity and morale.
Date published: 2021-11-05
Rated 5 out of 5 by from Life Saving! The amount of relief this unit has provided is hard to quantify. We are a manufacturing shop in the heart of Sun Valley, CA and let me assure you, the name is spot on. Regular temps over 100f. This fan, rated for around 6,000 sf does actually cool down half of our 12,000 sf around 15 degrees. My workers on the floor are ecstatic! Another unit may be in the future for next summer.
Date published: 2022-12-08
Rated 5 out of 5 by from Best swamp cooler I have owned I could not be happier with the this swamp cooler perfroms, it kept our detail shop nice and cool all summer. I have had two other coolers in the past and this one is by far our favorite.
Date published: 2021-11-04
Rated 5 out of 5 by from This item saved our event in hot weather We were going to have a very important event in a place without air conditioners. Big Ass Fans saved us by installing ceiling fans and telling us about the Cool-space 500. this evaporative coolers provided the cold air while their fans distributed the cold air all over the place. our event was a success and our guests were comfortable inside our venue.
Date published: 2021-11-22
Rated 5 out of 5 by from Quality Product Outstanding product. Built to last. Plenty of power.
Date published: 2021-11-17
Rated 5 out of 5 by from Great for manufacturing production floor. We run a lot of ovens in our production and the facility can get very hot in the summer and still pretty warm in the winter. Our production floor employees were relieved when we purchased a couple of these fans. They really do push cooler air. Our shop employees really do like these and have been a big help on the floor. We had previously purchased another brand and the BAF were a lot more solid and better build to last. Highly recommend and will keep purchasing these from BAF.
Date published: 2021-12-01
Rated 5 out of 5 by from More than expected, great company After searching around online I finally decided to buy the unit and boy I’ll tell you, I made the right decision. If you are considering a portable cooler this is it. One thing that I’ve learned is to be frugal with how much water you put on the pads. Less is more . It will cool better with less water running.
Date published: 2021-10-28
Rated 5 out of 5 by from I need cool air! We are very happy with the Cool-Space 400's we ordered for our plant. They lower the temperatures and it spreads out to the extent of our Big Ass Fans capabilities (about 110ft). Staying close to a water source or installing a water line ensures the tanks stay full and works as it should. Great product!
Date published: 2021-11-17
Rated 5 out of 5 by from Big ass fan cooled us down!! We bought the fan to help on job sites to cool us down. It did an amazing job. Customer service was great, they put up with me asking a ton of questions. Delivered safely, well secured for delivery. We have used just the fan, and with water for cooling. Thank you we will buy again from you.
Date published: 2022-12-15
Rated 5 out of 5 by from More like BAD ASS FANS! Nothing but good things to say about the 3 Cool Space 500's I got....meeting the guys from BAF at the ARA show last year was the beginning of a smooth purchasing experience, followed by a reasonable delivery time and finally a killer product. Customer service/warranty was top notch as well.
Date published: 2023-01-26
Rated 5 out of 5 by from Fan Tastic Very Impressed with this product. Not a joke when you say Big Ass Fan, Working in Arizona 110 degree temps can really slow production down causing us to end the day around 2:00 pm, with this fan we can work until 5:00 and add 15 hours of production per week that results in 8000 per month, Its not about can I afford this fan its about you cant afford not to have this fan. Simple math fan has already paid for itself in first season and will last for many more.
Date published: 2021-11-29
Rated 5 out of 5 by from Cool Space 400 We have a large shop that is very hard to keep cool here in the summer very humid. We purchased 3 of these units and what a difference it makes for the techs in the shop. easy to use easy to store and easy with up keep . i would highly recommend them
Date published: 2021-12-06
Rated 5 out of 5 by from Cool-Space 500 We purchased this unit for our warehouse and it worked great to help keep our workers comfortable in the heat of the summer. The staff at Big Ass Fans were knowledgeable about their product and were very helpful assisting us with this purchase.
Date published: 2021-11-16
Rated 5 out of 5 by from Helps fight Houston humid summers We bought this to help cool down an unconditioned Houston warehouse space in the summer. Combined with the Basic 6 fan it does a great job cooling down our staging area by about 10 degrees. It puts out a nice strong and cool breeze.
Date published: 2021-11-15
  • y_2023, m_3, d_30, h_22
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.35
  • cp_2, bvpage2n
  • co_hasreviews, tv_0, tr_180
  • loc_en_US, sid_F-EV1-3601, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_bigassfans
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getReviews, 8.32ms
More Information
Display Name Cool-Space 400
SKU F-EV1-3601
Lead Time 3
Technical Specifications Cool-Space 400
Warranty Evaporated Coolers Warranty
Need setup help? Technical Support