Head-to-head · Best Evaporative Coolers

Hessaire MC18M Portable Evaporative Cooler vs HESSAIRE MC37M

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

HESSAIRE MC37M comes out ahead by a clear margin (4.1 vs 4.4). The gap is mostly about moderate cooling in small to medium spaces — read the strengths below before deciding.

Ranked #4 in Best Evaporative Coolers

Hessaire MC18M Portable Evaporative Cooler

4.1

$576as of Jul 1

The Hessaire MC18M 1,300 CFM evaporative cooler is praised for its portability and effectiveness in low humidity climates, with reviewers noting it works well in off-grid situations. Users report it's a good value for the price, with one reviewer calling it a 'BEAST' for cooling large rooms. The unit operates on standard 120V or 18-24V battery power, making it versatile for different settings. However, some reviewers noted concerns about the plastic build quality and the fill door's susceptibility to back splashing.

Strengths

— 1,300 CFM cooling capacity suitable for 500 sq ft areas
— Portable design with 2-speed fan control
— Can operate on either 120V plug-in or 18-24V battery power

Watch-outs

— Plastic construction noted as not very durable looking by some reviewers
— Fill door design prone to back splashing if filled too quickly

$576 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best Evaporative Coolers

HESSAIRE MC37M

4.4

$603.12as of Jul 1

The HESSAIRE MC37M is a portable evaporative cooler with 3,100 CFM airflow and 3-speed control, designed for effective room cooling. Reviewers noted its portability and ease of movement with caster wheels, though performance drops significantly in high humidity conditions. The unit requires regular maintenance including pad cleaning and replacement to maintain efficiency. It's best suited for users seeking an affordable, mobile cooling solution in low-to-moderate humidity environments.

Strengths

— 3,100 CFM cooling capacity for effective room cooling
— 3-speed control for adjustable airflow
— Portable design with caster wheels for easy mobility

Watch-outs

— Evaporative cooling effectiveness decreases in high humidity (above 60%)
— Requires regular maintenance and pad replacement

$603.12 · Check Price on Amazon Full review →

How they stack up

Hessaire MC18M Portable Evaporative Cooler

The Hessaire MC18M offers a good balance of portability and cooling power with 1,300 CFM, but it's significantly less powerful than the MC37M and MC61M models. While it's more affordable and battery-powered, it lacks the 3-speed control and large tank capacity of the MC61M, making it better for smaller, off-grid applications.

HESSAIRE MC37M

The HESSAIRE MC37M provides 3,100 CFM cooling, which is more powerful than the MC18M but less than the Uthfy 41" Swamp Cooler or MC61M. It's more portable than the Uthfy and offers 3-speed control, but lacks the large tank capacity and high airflow of the MC61M, making it a mid-tier option for moderate cooling needs.

Specs side-by-side

Spec	Hessaire MC18M Portable Evaporative Cooler	HESSAIRE MC37M
Airflow	1300	3,100
Fan Speeds	2	3
Cooling Type	Evaporative	Evaporative
Tank Capacity	4.8 gallons	10.3 gallons
Weight	16 lb	40 lb
Dimensions	28" H x 20" W x 10" D	24" L x 16" W x 38" H
Coverage Area	500 sq ft	—

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