Will this unit work in southwest Florida where the humidity is high?

No!! These are completely dependent on humidity differentials. I've read tons of reviews and background. They'll work to some degree as long as the relative humidity is less than 100%, but you're probably better off with a non-evaporative cooler in Florida. They work like crazy in desert areas, but even then, they can only do a max of about 20'F difference from outside temp. They might work okay in concert with a traditional central air system, since that actually de-humidifies the inside air. But I don't know.

How far does the air flow

I have ours on low and it cools from the garage door to the home door on the opposite side of the room. Very amazing

would this work in garage in AZ? no window. won't keep door open due to snakes. suggestions for best model?

If you can, create some inlet and outlet. If everything is closed, you'll evaporate some, however, it will recycle the moist air, since it does not have any way to dry. Ideally, create an opening, perhaps with some bug screen to keep snakes out and place the cooler in front. You'll also have to have a way to exhaust the moist air, the hot dry air will eventually be converted into some laundry room condition. That's why there should be an exhaust fan of some kind to expel the moist air. I am running the MC37M for almost five years in northern Arizona. Whilst the cooler is simple, it has some design flaws. We have water that has very high calcium contents. The moisture / calcium can cause built ups on the electrical connector and puff, cause problems. This type of water can also cause higher maintenance costs, ergo every year new pads, possibly new pump. Lots of calcium layer inside the tank and on outside casing etc. In your case you might be better off with a window AC, but it always boils down to fresh air circulation.

can I use regular tap water for this product? How many hours does it work if I fill up the tank?

Yes, tap water is fine. I take a one gallon jug and place in the fridge and when ready to use the cooler I empty it in the reservoir. I refill and place back into the fridge for next time. Immediate very cool air that last a while. I would say that about 3-4 hours on a tank before the pump starts sucking air.

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Description

💨 Stay Chill, Stay Ahead: Cool smarter, not harder.

ECO FRIENDLY ENERGY SAVER - Cut your electricity use by up to 50% compared to traditional ACs while staying green and fresh.
POWERFUL 3100 CFM AIRFLOW - Experience a refreshing breeze that covers up to 950 sq ft, perfect for your home or office sanctuary.
EFFORTLESS PLUG PLAY DESIGN - Simple manual controls and easy maintenance mean you’re cool in seconds—no tech headaches required.
MASSIVE 10 3 GALLON RESERVOIR - Enjoy uninterrupted cooling for 3-4 hours with continuous water flow—stay cool without constant refills.
WHISPER QUIET 59 D B OPERATION - Maintain your focus or relaxation with near-silent cooling that won’t disrupt your vibe.

The Hessaire MC37M is a high-performance evaporative cooler delivering 3,100 CFM of cooling power across 950 sq ft. Featuring a large 10.3-gallon water tank with continuous fill capability, it provides 3-4 hours of consistent cooling. Designed for quiet operation at 59 dB and easy manual controls, this energy-efficient unit saves up to 50% on electricity compared to conventional air conditioners, making it an ideal eco-conscious choice for dry, hot climates.

Specifications

Brand	Hessaire
Mounting Type	Freestanding
Special Feature	EASY TO OPERATE & SIMPLE TO MAINTAIN: Fill tank, connect power, place unit in a well-ventilated area, flip the switch, and you're all set. Before storing, run for 30 minutes on fan to dry the filter., ENERGY EFFICENT & ECO FRIENDLY: Evaporative cooling fans save up to 50% on electricity compared to refrigerated air conditioning systems. Using water instead of refrigerant prevents any release of ozone depleting chemicals into the air., MANUAL & CONTINUOUS WATER FILL: Hessaire’s MC37M has a 10.3-gallon water tank creating up to 3-4 hours of use. The built-in float valve and garden hose adapter allow for easy connection and continuous water flow without overflowing your tank.
Color	Gray
Air Flow Capacity	3100 Cubic Feet Per Minute
Controls Type	Knob
Reservoir Capacity	10.3 Gallons
Floor Area	950 Square Feet
Model Name	MC37M
Recommended Uses For Product	Residential
Included Components	MC37M Evaporative Cooler
Noise Level	59 dB
Number of Speeds	3
Product Dimensions	24"D x 16"W x 38"H
Voltage	115 Volts
Global Trade Identification Number	00868039000015
Manufacturer	Hessaire
Manufacture Year	2015
Size	3,100 CFM
UPC	868039000015
Part Number	MC37M
Item Weight	39 pounds
Item model number	MC37M
Is Discontinued By Manufacturer	No
Style	Cooler
Shape	Retangle
Power Source	Corded electric
Item Package Quantity	1
Water Consumption	2.58 Gallons per Hour
Coverage	950 sq ft
Special Features	EASY TO OPERATE & SIMPLE TO MAINTAIN: Fill tank, connect power, place unit in a well-ventilated area, flip the switch, and you're all set. Before storing, run for 30 minutes on fan to dry the filter., ENERGY EFFICENT & ECO FRIENDLY: Evaporative cooling fans save up to 50% on electricity compared to refrigerated air conditioning systems. Using water instead of refrigerant prevents any release of ozone depleting chemicals into the air., MANUAL & CONTINUOUS WATER FILL: Hessaire’s MC37M has a 10.3-gallon water tank creating up to 3-4 hours of use. The built-in float valve and garden hose adapter allow for easy connection and continuous water flow without overflowing your tank.
Usage	Outside
Batteries Included?	No
Batteries Required?	No
Warranty Description	1 year manufacturer