Big Ass Fans Cool-Space 400
For factories, warehouses and gyms that want commercial build quality and a long warranty in a cooler that plugs into a regular outlet.
Amazon $3,699$3,699
The Big Ass Fans Cool-Space 400 is the better evaporative cooler overall, rated 4.1 to 3.9. The Big Ass Fans Cool-Space 400 leads on warranty. The Hessaire MC92 wins on value and features. The Hessaire MC92 costs $2,400 less ($1,299 vs $3,699).
Hessaire MC92
For warehouses, big shops and outdoor events where you want the most airflow for the money and can live with a short warranty.
Amazon $1,299$1,299
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Big Ass Fans Cool-Space 400 for warranty (5-year warranty vs 1-year warranty).
- Choose the Hessaire MC92 for value ($118.09 per 1,000 CFM ($1,299, 11,000 CFM) vs $369.90 per 1,000 CFM ($3,699, 10,000 CFM)) and features (rigid cooling pads, oscillation, hose hookup vs rigid cooling pads, hose hookup).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 2,000 CFM and up evaporative cooler; a clear win is highlighted. How we rank explains each one.
| Factor weight | Big Ass Fans Cool-Space 400 | Hessaire MC92 |
|---|---|---|
| Overall rating | 4.1/5 | 3.9/5 |
| Value 30% | 35 $369.90 per 1,000 CFM ($3,699, 10,000 CFM) | 76 $118.09 per 1,000 CFM ($1,299, 11,000 CFM) |
| Airflow 25% | 100 10,000 CFM | 100 11,000 CFM |
| Tank 10% | 100 46 gal tank | 100 32.8 gal tank |
| Features 15% | 50 rigid cooling pads, hose hookup | 75 rigid cooling pads, oscillation, hose hookup |
| Warranty 20% | 100 5-year warranty | 0 1-year warranty |
Specifications
| Big Ass Fans Cool-Space 400 | Hessaire MC92 | |
|---|---|---|
| Cooling | ||
| Airflow | 10,000 CFM | 11,000 CFM |
| Cooling area | 3,600 sq ft | - |
| Cooling pads | Rigid cellulose | Rigid cellulose |
| Pad thickness | 8 in | - |
| Tank | 46 gal | 32.8 gal |
| Hose hookup | Yes | Yes |
| Controls and build | ||
| Fan speeds | - | 3 |
| Oscillation | - | Yes |
| Remote | No | No |
| Power draw | - | 460 W |
| Weight | 220 lb | 126 lb |
| Warranty | 5 years | 1 year |