--- product_id: 117143128 title: "MC37M Indoor or Outdoor Portable Oscillating Evaporative Swamp Air Cooler for 950 Square Feet of Space with Water Reservoir" brand: "hessaire" price: "¥433628" currency: JPY in_stock: true reviews_count: 10 category: "Hessaire" url: https://www.desertcart.jp/products/117143128-mc37m-indoor-or-outdoor-portable-oscillating-evaporative-swamp-air-cooler store_origin: JP region: Japan --- # 10.3 gal water reservoir 8-hour programmable timer 3,100 CFM airflow MC37M Indoor or Outdoor Portable Oscillating Evaporative Swamp Air Cooler for 950 Square Feet of Space with Water Reservoir **Brand:** hessaire **Price:** ¥433628 **Availability:** ✅ In Stock ## Summary > 💨 Beat the heat, not the planet — cool smarter, live fresher! ## Quick Answers - **What is this?** MC37M Indoor or Outdoor Portable Oscillating Evaporative Swamp Air Cooler for 950 Square Feet of Space with Water Reservoir by hessaire - **How much does it cost?** ¥433628 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/117143128-mc37m-indoor-or-outdoor-portable-oscillating-evaporative-swamp-air-cooler) ## Best For - hessaire enthusiasts ## Why This Product - Trusted hessaire brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Day Chill Mode:** Massive 10.3-gallon reservoir with manual fill or garden hose adapter for continuous cooling - • **Set It & Forget It:** 8-hour timer lets you schedule cooling to match your busy lifestyle - • **Stay Cool, Stay Green:** Eco-friendly water evaporation cooling uses 276 watts—efficient and sustainable - • **Custom Comfort Control:** 4 fan-only + 2 evaporation settings with oscillating vents for tailored airflow - • **Refresh Your Space Instantly:** Powerful 3,100 CFM airflow cools up to 950 sq ft with natural evaporative tech ## Overview The Hessaire MC37M is a portable evaporative air cooler designed for indoor and outdoor use, efficiently cooling spaces up to 950 square feet with a powerful 3,100 CFM airflow. Featuring a large 10.3-gallon water reservoir with manual or hose fill options, it offers versatile cooling through multiple fan and evaporation settings, oscillating vents, and an 8-hour timer, all while operating quietly at 55 dB and consuming just 276 watts. ## Description Buy Hessaire MC37M Indoor or Outdoor Portable Oscillating Evaporative Swamp Air Cooler for 950 Square Feet of Space with Water Reservoir: Portable - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Perfect for porches, garages, mancaves - I can’t be happier with this purchase. Works great, especially on the hot days. We put it on our porch and it cools it 15 degrees. Works better than the portacool unit we have on the back porch, which is 3 times the price and this one bit does the same thing. Depending on humidity outside, water reservoir last 6 hours before needing filled. Review: Extend your outdoor time! - We have had this unit for a year and a half now. This thing is awesome and allows us to be outside when the temperature is over 95 or more all the way up to 110 if necessary. It blows cool air at around the mid 70’s. If I were to add a con, the low setting is still fairly aggressive but probably by design to push out cold air at the lowest setting. This allows us to use our outdoor space all summer long in the desert heat. Highly recommend. ## Features - Designed to use water evaporation to cool hot, stale air and circulate fresh, refreshing air in areas up to 950 square feet at a rate of 3,100 square feet per minute - Features a 10.3 gallon water reservoir as an air cooling method with a manual water fill and an adapter for your garden hose for continuous operation - Equipped with 4 fan-only settings, 2 evaporation settings, oscillating vents, and an 8-hour timer to meet all your cooling needs ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07GBG1GY8 | | Additional Features | Oscillating Fan, Portable, Timer | | Air Flow Capacity | 3100 cfm | | Amperage | 2.4 A | | Best Sellers Rank | #730,819 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #238 in Portable Air Conditioners | | Brand | Hessaire | | Brand Name | Hessaire | | Color | Gray | | Controls Type | Button | | Customer Reviews | 4.3 out of 5 stars 553 Reviews | | Floor Area | 950 square_feet | | Form Factor | Portable | | Included Components | fan-only,handle,manual | | Item Dimensions D x W x H | 17"D x 25"W x 37"H | | Manufacturer | Hessaire | | Manufacturer Part Number | SYL-98953 | | Material | Plastic | | Material Type | Plastic | | Model Name | MC37M | | Model Number | MC37M | | Mounting Type | Freestanding | | Noise | 55 db | | Number of Items | 1 | | Number of Speeds | 3 | | Operation Mode | manual | | Recommended Uses For Product | Residential | | Reservoir Capacity | 10.3 gallons | | Size | 17 inches x 25 inches x 37 inches | | Software Update Supported to Date | unknown | | Special Feature | Oscillating Fan, Portable, Timer | | UPC | 826708605640 | | Voltage | 115 volts | | Wattage | 276 watts | ## Product Details - **Air Flow Capacity:** 3100 cfm - **Brand:** Hessaire - **Color:** Gray - **Controls Type:** Button - **Floor Area:** 950 square_feet - **Material:** Plastic - **Model Name:** MC37M - **Mounting Type:** Freestanding - **Reservoir Capacity:** 10.3 gallons - **Special Feature:** Oscillating Fan, Portable, Timer ## Images ![MC37M Indoor or Outdoor Portable Oscillating Evaporative Swamp Air Cooler for 950 Square Feet of Space with Water Reservoir - Image 1](https://m.media-amazon.com/images/I/714r2a+TizL.jpg) ## Questions & Answers **Q: Would this unit cool an approx 150sqft garage enough for guests to sleep? North Florida climate is pretty hot!** A: It will not work in Florida or any place with humidity. Need to have a dry climate for evaporative cooler to work. **Q: Removable filterpads? Can they be cleaned or do you purchase new ones** A: From what I read they can they are removable, cleaned with the special agent and replaceable **Q: Is there a safety to turn the water pump off if the water gets too low?** A: No. There is not a safety shut off for the water pump should it run dry. I keep mine hooked to water hose so this never happens **Q: Can I attach a hose to it?** A: Yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for porches, garages, mancaves *by A***R on March 2, 2025* I can’t be happier with this purchase. Works great, especially on the hot days. We put it on our porch and it cools it 15 degrees. Works better than the portacool unit we have on the back porch, which is 3 times the price and this one bit does the same thing. Depending on humidity outside, water reservoir last 6 hours before needing filled. ### ⭐⭐⭐⭐⭐ Extend your outdoor time! *by A***R on May 21, 2025* We have had this unit for a year and a half now. This thing is awesome and allows us to be outside when the temperature is over 95 or more all the way up to 110 if necessary. It blows cool air at around the mid 70’s. If I were to add a con, the low setting is still fairly aggressive but probably by design to push out cold air at the lowest setting. This allows us to use our outdoor space all summer long in the desert heat. Highly recommend. ### ⭐⭐⭐⭐ Amended: Works in the heat and humidity of NYC! *by E***C on June 15, 2021* Amending my review below with three recommendations after a few summers using this swamp cooler in hot and humid NYC: One: This unit is effective if you remove the humidity it produces. You must have a window open to exhaust the air it produces and you should allow the cooled air from the unit to travel across your apartment to cool the ambient air before pulling and pushing the air out of the window using other fans, multiple fans. This is very important to drive the cool air out the window to remove the humidity. Two: You must use this unit earlier in the day to slow down and even stop any temperature increase, before the sun pounds down during the day. It can lower the temperature, but that is less effective in high humidity areas like NYC. You need multiple high volume fans to assist in pulling and driving the humid air it produces out a window. Start it early in the morning and keep running it to mitigate the rise in temperature during the day. I have used it to cool recently up to 100 degrees and it will make it bearable even on such days. At 100 outside, the floor in front of this unit is cool to the touch and so are you, but this is not the same as the cold dehumidified air from compressor driven AC units. I imagine this swamp cooler would be far more effective if used in dry areas out West in the High Desert. There is a dramatic loss in the effectiveness as the temperature rises through the high eighties into the nineties owing to the humidity factor, which is why I cannot overemphasize the use of multiple fans, preferably axial fans that can move a lot of air carrying the humidity out of your living space through an open window. Using this unit in the low eighties will cause you to to be cold, so there is a threshold in the high eighties and low nineties when it loses its effectiveness and your comfort will not be the same, which is why, again, the fans are so important to remove the humid air. My Challenge and Message to Hessaire and all engineers and folks who want to make a buck, a big buck: Design a portable unit that works on the same evaporative principle, but removes the humidity, and only produces cool dry air. Can you do it? Three: Use a dedicated bucket to refill the large tank with cold clean water. It is too many trips with a pitcher. Do not use a bucket used for other purposes to prevent contamination of the water in the tank, to limit the growth of anything in the tank and on the media, and not clog the water pump. I add highly diluted white vinegar and that retards the growth of anything in the tank. I purchased this unit at the beginning of Summer when my AC was out. Replacing the AC takes time in a NYC Co-Op, so this unit was exactly what the Doctor ordered,....literally. The early heatspell of nearly ninety degrees is dangerous to the health and this unit arrived just in time to cool things off, even in the humidity of NYC. Granted, this is not Houston or Tampa, as temps creep up toward a hundred, fans only would not suffice. This cools things down by an estimated fifteen to twenty degrees in half an hour or less. Up to eighty degrees, one only needs to use the fan on this unit. I am confident it will cool at a hundred degrees or more, a rarity fortunately in NYC. It may not be AC cool or cold, but it is cool like a spring breeze and the three speed fan pushes plenty of air around, especially if the swivel function is used. I only use it on the low setting and I am quite alright, even shutting the water evaporative function off in the evenings. It delivers and does so only drawing current for the fan and pump motor. It can save the life of an older person or one who has breathing difficulties. Just let it blow out a distant window or use another fan to pull the humid air out a distant window. It produces a lot of humidity and you should be well aware of this, because it can go through its large tank fairly quickly over a day. The noise level is acceptable on the low setting and it may not be the most attractive thing to look at, but it does its job well and the noise would be no issue in a garage or outdoors. Even if I give it four stars taken down by its looks and moderate noise, this is one of only a few items on Amazon I can so highly recommend. This is a unit all about the practical function of cooling. You get what you pay for and worth the going price. ## Frequently Bought Together - Hessaire MC37M Indoor or Outdoor Portable Oscillating Evaporative Swamp Air Cooler for 950 Square Feet of Space with Water Reservoir - CVR6037- Mobile Cooler Cover for models: MC37M,MC37A,MC37V,3100CFM - BestAir 3BT-PDQ-6 Original BT Humidifier Bacteriostatic Water Treatment, 32 fl oz, Single Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/117143128-mc37m-indoor-or-outdoor-portable-oscillating-evaporative-swamp-air-cooler](https://www.desertcart.jp/products/117143128-mc37m-indoor-or-outdoor-portable-oscillating-evaporative-swamp-air-cooler) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-29*