A 10 in fan for grow rooms that costs less than EC rivals its size, if you add your own speed controller.
Amazon $194.95
The largest CLOUDLINE, moving 1,604 CFM for big rooms and multiple tents. It is loud at full speed, so most owners run it lower.
- 1,604 CFMAirflow
- 250 WPower
- 62 dBANoise
- ECMotor
Price checked November 8, 2026. As an Amazon Associate we earn from qualifying purchases.
- Ten-speed controller included, and it plugs into AC Infinity’s smart controllers later
- High rated static pressure, so it keeps pulling through a carbon filter and long duct runs
- Loud at full speed (62 dBA rated)
The AC Infinity CLOUDLINE S family
Every AC Infinity CLOUDLINE S model we rank, smallest first. Ratings compare each against its own duct size.
| Model | Airflow | Rating | Price |
|---|---|---|---|
| AC Infinity CLOUDLINE S4 | 226 CFM | 3.6/5 | $89.99 |
| AC Infinity CLOUDLINE S6 | 425 CFM | 3.4/5 | $99 |
| AC Infinity CLOUDLINE S10 | 1,201 CFM | 2.7/5 | $279 |
| AC Infinity CLOUDLINE S12 (this one) | 1,604 CFM | 2.6/5 | $379 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its duct size. How we rank explains each one.
Specifications
| Model number | AI-CLS12 |
|---|---|
| Performance | |
| Duct size | 12 in |
| Rated airflow | 1,604 CFM |
| Static pressure (not scored) | 818 Pa |
| Power at full speed | 250 W |
| Power figure | Max power draw |
| Average power (not scored) | 139 W |
| Airflow per watt | 6.4 CFM/W |
| Price per 100 CFM | $23.63 |
| Noise at full speed | 62 dBA |
| Controls | |
| Motor | EC |
| Controller | 10-speed controller |
| Speeds | 10 |
| Temperature and humidity control | No |
| Phone app | No |
| Timer or cycle modes | No |
| Build | |
| Housing | Plastic |
| Ingress rating | IP44 |
| Voltage | 100-240 V |
| Warranty | 2 years |
Alternatives in this duct size
An 8 in EC fan for large tents and small grow rooms, with high static pressure. It draws more power at full speed than rivals that move more air.
Amazon $139A 10 in EC fan for grow rooms and big carbon filters, with the highest static pressure in the range. Loud near full speed.
Amazon $279Compare
Compare the AC Infinity CLOUDLINE S12 with any other inline duct fan →
More from AC Infinity: every AC Infinity product ranked.