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4000-CFM 3 -Speed Window Evaporative Cooler for 1600-sq ft

Ratings & Reviews for MasterCool 4000-CFM 3 -Speed Window Evaporative Cooler for 1600-sq ft

3.6
178
Review
 3.6 out of 5
178 Reviews


66% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The evaporative cooler provides effective cooling performance and efficiency, able to cool large spaces even in hot climates. Users appreciate the low operating costs and reduced utility bills compared to traditional air conditioning. However, the installation process can be challenging, with difficulties aligning and securing the back panel. Some customers also experienced issues with the control panel and remote not functioning properly. Ongoing maintenance, such as regularly cleaning the water distribution system and pads, is required to prevent mineral buildup and ensure optimal performance.

Customer review summary generated by AI, including incentivized reviews.
178 Customer Reviews

sucks

worthless waste of money

June 14, 2025
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Response from EssickAirProducts

Thank you for your feedback. We're truly sorry to hear that your experience with our evaporative cooler did not meet your expectations. Our goal ... Read More

EssickAirProductsJune 16, 2025

Had one before, I do not recommend this one.

Would Not Recommend

Had one of these prior for 8 years. Putting the back pad cover on is almost impossible to get the water pump hose lined up to the back fixture. I figured they would have fixed that issue by now, but nope. I had to cut out a piece of plastic to get needle nose plyers in and attach the pump hose to the back pad unit. UUGH. Also, this unit DOES NOT come with an interior plastic cover, so thankfully I was able to use my old one, so I don't get cold or hot air blowing into my room when the unit is...

May 20, 2025
Verified Purchaser
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Response from EssickAirProducts

Hello! Thank you for your review. We hate to hear that you had issues with your cooler. We strive for customer satisfaction and to make quality produ... Read More

EssickAirProductsMay 21, 2025

Awesome product.

Would Recommend

The 1st one tripped a breaker, smelled some smoke and after resetting the breaker the fan motor didn't work. The pump still worked though. I took the whole cooler back and Lowe's exchanged it with another one they had in stock. I can’t say enough how well the folks in customer service, at the Casa Grande, AZ store, did their jobs. Y'all are amazing. Thank you! My workshop is cool now.

April 21, 2025
Verified Purchaser
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Response from EssickAirProducts

Hello, Woodworker! We appreciate you taking the time to share your thoughts. Thanks for the stars! -Melissa, MastercoolWas this Review Helpful ?

Response from EssickAirProducts

Hello, Bob! We appreciate you taking the time to leave us a review. Thanks for the stars. -Melissa, Mastercool

EssickAirProductsJuly 26, 2024

A virtual nightmare (but it cools as it should)

Would Not Recommend

The back needs to be removed and replaced regularly to deal with hard water scale eliminator and odor control tables. It takes 2 people to remove and replace the back. Sometimes words just might be spoken that are best to not to use in polite company. It is very frustrating to say the least. The water line from the pump to tank for the pads the needs to be connected while they are separated and there is very little room to get one hand in between the main body and the back to accomplish tha...

July 23, 2024
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Response from EssickAirProducts

Moose16-thank you for taking the time to review our product. Reviews good and bad are essential for us to make improvements when needed. I'm sorr... Read More

EssickAirProductsJuly 29, 2024

Do not buy.

Would Not Recommend

A piece of junk it leaks like a sieve.

June 24, 2024
Verified Purchaser
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Response from EssickAirProducts

J lib - Thank you for taking the time to review our product. I'm so sorry to hear that the unit is leaking. There could be a few things that wou... Read More

EssickAirProductsJune 25, 2024

Master cool

Would Recommend

Great unit, quiet, very effective easy install

June 22, 2024
Verified Purchaser
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Response from EssickAirProducts

Hello, Brad! Thanks for taking the time to rate and review our product. We love the stars! -Melissa, Essick Air ProductWas this Review Helpful ?

Response from EssickAirProducts

Hello, Nicky! We appreciate you taking the time to share your thoughts. -Melissa, Mastercool

EssickAirProductsMay 31, 2024

Chilling

Would Recommend

Excellent unit.

May 9, 2024
Verified Purchaser
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Response from EssickAirProducts

Hello, Gklsr! We love hearing from happy customers. Thanks for the stars! -Melissa, Essick Air Product

EssickAirProductsMay 9, 2024

It works very well but not easy to assemble

Would Recommend

The remote always starts at the last setting it was used on so initially, the pads are not wet when you restart and if you stopped it at the high fan setting, that is where is will start again. The feed tube from the pump to the pads is hard to put on and the overflow drain threads are very easy to cross thread so be careful!

May 3, 2024
Verified Purchaser
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Response from EssickAirProducts

Hello! We appreciate you taking the time to share your thoughts. -Melissa, Essick Air Product

EssickAirProductsMay 6, 2024

Pleasantly surprised at employee helpfulness

Would Recommend

It is too early to use a cooler so I don't know how it works. But for the first time Lowes' employees were friendly and helpful - a first.

April 19, 2024
Verified Purchaser
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Response from EssickAirProducts

Hello, Deborah! We appreciate you taking the time to share your thoughts. -Melissa, Essick Air Product

EssickAirProductsApril 19, 2024

Maybe/maybe not

Would Not Recommend

Purchased in June and installed it, but didn't start using it until July. We ran it during the day for about a week and it stopped working. The pump went out! Called customer service at Mastercool and they are supposed to be sending a new pump (probably not overnight). I can't say it's good or bad - it worked great for the few days it was running, but the pump went out with very little use. Buyer Beware!

July 14, 2023
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Response from EssickAirProducts

Hello, Sammy! We appreciate you taking the time to share your thoughts. -Melissa, Champion Cooler

EssickAirProductsJuly 14, 2023

Works well, cheap to operate, 2 much maintenance!

I've owned this unit for 4 years now. Let me tell you the good and bad: Good: Cheap to operate as far as electeicity and water costs, works very well at cooling smaller homes (mine is 1068 sqft) It is fairly quiet on the low setting. Bad: Media pads are too expensive at $125.00 a pop and they need to be changed every year, unless your water isn't too hard. The reservoir fills with mold so it needs to be cleaned out once a week AT LEAST. So, be prepared to be constantly checking th...

June 25, 2023
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Response from EssickAirProducts

Hello, LHS! We appreciate you taking the time to share your thoughts. -Melissa, Essick Air Product

EssickAirProductsJune 26, 2023

Can be connected to a timer; remembers its setting

Would Recommend

Very easy to install, it’s lightweight and does a great job cooling.

June 7, 2023
Verified Purchaser
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Response from EssickAirProducts

Hello! We appreciate your feedback. Thanks for the stars! -Melissa, Essick Air Product

EssickAirProductsJune 8, 2023

Absolute junk....

Would Not Recommend

Bought this unit from Lowe's store. Installed it week later removed window installed water lines after completed unit would not work just cycled thru off -on -high- low- pump on pump off contacted mastercool customer service they said unfortunately its known issue and I would have to return unit.....avoid this company 😑

May 19, 2023
Verified Purchaser
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Response from EssickAirProducts

Hello, Rick! Thanks for reaching out. It sounds like we may need to run through some troubleshooting with you. Please give our Customer Service Team ... Read More

EssickAirProductsMay 19, 2023