Hessaire M350 11,000 CFM 3-Speed Portable Evaporative Cooler - he13155
Hot indoor commercial and industrial work spaces are easily cooled with the Hessaire M350 11,000 CFM Evaporative Cooler. Designed for creating comfort in auto garages, kennels, stables, warehouses and other spaces up to 3,000 square feet, this swamp cooler is safer in wet conditions with the included GFCI safety plug.
Other features include simple dial controls, oscillating louvers, casters, and dual water fill options.
Outdoor Safety
The included ground fault circuit interrupter (GFCI) safety plug makes the M350 safe for use in outdoor settings such as loading docks, outdoor eating areas, and others. For improved safety in wet conditions, the GFCI plug will automatically shut down the cooler in the event another electrical pathway is detected. This is great for environments where collected moisture and humidity is persistent.
**Even with the GFCI safety plug, general safety guidelines should be followed with electrical appliances.
Dual Water Fill Options
The Hessaire M350 has two water reservoir tank fill options for evaporative cooling:
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Continuous Water Fill: This option allows you to connect a standard garden hose to the external water hose hook-up connection on the back. Secure the water hose to the hook-up, and turn on the water. The water will fill the 32.8-gallon water tank, and the internal float valve will prevent water spillage outside the cooler.
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Manual Water Fill: When a water hose isnβt practical, use the manual water fill door to fill the water tank. Open the side water door and put in your desired amount of water, using the water level display window. Fill until full, and enjoy up to three to four hours of non-stop cooling until the water runs out.Designed for cooling large spaces, the Hessaire M350 is great for warehouses and other industrial areas thanks to the GFCI safety plug, cooling up to 3,000 square feet of dry, hot environments.
Simple Controls
The Hessaire M350 features user-friendly dial controls for hassle-free operation.
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Pump Power Button: Turn the water pump for the cooler cooler on for added moisture in the air, or off to use the machine without water.
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Fan Switch: Turn on the fan and select either low, medium, or high speeds.
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Swing Button: Start the automatic air swing delivery system (oscillation) with the swing control dial.
What Customers Love
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Extended Cooling: The 32.8-gallon water tank is great for continuous use, or manually fill it for three to four hours of non-stop cooling.
Things to Consider
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Dry Environments: The M350 is best used in dry regions and areas where the humidity is below 60%.
Features
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Washable Xel50 Padding: Rinse and reuse the washable Xel50 cooling pads.
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Water Level Display: Monitor how much water is in the water tank with the front water level display window.
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Tank Drain: When the season is over or for long periods of storage, use the exterior drain to empty the water tank.
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Casters: Easily transport the swamp cooler from room to room with the included caster wheels.
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Height: For safety, height has been reduced for improved sight over the top of the M350.
What our Experts Think
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Industrial-grade cooling power β Delivers 11,000 CFM airflow, moving massive volumes of cool moisture across up to ~3,000 sq ft, perfect for large garages, warehouses, run-off events, barns, and commercial spaces.
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Exceptional value with refurbishment β Factory-refurbished unit backed by a one-year limited warranty, offering like-new performance at a lower cost than a new MC92V model.
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User-friendly & versatile β Dual water fill options (manual or continuous hose hookup), easy dials for fan speed/pump/oscillation, and adjustable louvers help tailor airflow and cooling where you need it.
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Built-for rugged use β Large 32.8 gallon water reservoir, heavy-duty pads, oscillating design, and caster wheels support long runtime, broad coverage, and easy mobility.
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Energy-efficient operation β Runs on modest power (β460 W) with low operating costs (~$0.05/hour), balancing high flow with economical performance.
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Best in dry climates β As with all evaporative coolers, peak performance occurs in low-humidity environments; in humid regions, cooling feels less effective and adds moisture to the air.
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Ideal for demanding spaces β Experts highlight its strength for industrial, commercial, and large open spaces where standard fans or small coolers canβt compete.
Q&A
Q: What cooling performance does the Hessaire MC92V-R deliver?
A: Offers 11,000 CFM airflow, powerful enough to cool large industrial and commercial spaces up to 3,000 sq ft.
Q: What environments is this cooler best suited for?
A: Ideal for warehouses, garages, outdoor venues, kennels, and manufacturing areas needing rugged, high-capacity cooling.
Q: What makes this model refurbished?
A: Itβs a manufacturer-refurbished unit, restored to factory standards with full function, often at a lower price than new.
Q: How is water supplied to the cooler?
A: Two fill options: continuous water fill via garden hose or manual tank fill, with a 32.8-gallon reservoir for extended runtime.
Q: What controls and features does it include?
A: Simple dial controls, oscillating louvers, adjustable airflow direction, and casters for easy mobility.
Q: Is it safe for outdoor wet conditions?
A: Yes β includes a GFCI safety plug that shuts off power if an electrical fault is detected.
Q: Does it come with cooling pads?
A: Yes β includes three hi-density washable Xel50 cooling pads for improved evaporation efficiency.
Maintenance Tips
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Always unplug before maintenance or cleaning
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Clean cooling pads regularly to remove dust, debris & mineral scale
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Drain and flush water tank weekly to prevent buildup & odors
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Use fresh water; avoid stagnant water when idle
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Deep clean pads monthly with mild detergent or vinegar solution
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Inspect pump, float valve, hoses, and seals for leaks or wear
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Replace worn pads to preserve airflow and cooling efficiency
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Keep air intake and vents clear for optimal 11,000 CFM performance
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Store dry after season; fully drain tank and dry pads before storage
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Operate with good ventilation (open windows/doors) for best cooling effect
Damage 
Loss 
Theft 
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