VIVOSUN AeroZesh T6
#1 in 6 inFull review
A 6 in EC fan that moves about as much air as the CLOUDLINE S6 on half the rated power, for less money. The rated noise is higher.
Amazon $89.99$89.99
6 in408 CFM11.7 CFM/W32 dBA
3.4/5
The usual pick for a 4x4 or 5x5 grow tent with a carbon filter: plenty of airflow, high static pressure and quiet running.
- 425 CFMAirflow
- 70 WPower
- 30 dBANoise
- ECMotor
Check price at Amazon$99
Price checked November 8, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 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
- Among the quietest fans of its size at full speed (30 dBA rated)
Cons
- Costs more than budget EC fans that move similar air
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 (this one) | 425 CFM | 3.4/5 | $99 |
| AC Infinity CLOUDLINE S10 | 1,201 CFM | 2.7/5 | $279 |
| AC Infinity CLOUDLINE S12 | 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-CLS6 |
|---|---|
| Performance | |
| Duct size | 6 in |
| Rated airflow | 425 CFM |
| Static pressure (not scored) | 503 Pa |
| Power at full speed | 70 W |
| Power figure | Max power draw |
| Average power (not scored) | 38 W |
| Airflow per watt | 6.1 CFM/W |
| Price per 100 CFM | $23.29 |
| Noise at full speed | 30 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
VIVOSUN R6 6 in Inline Fan
#3 in 6 inFull review
A low-cost 6 in fan for bathroom, basement or tent exhaust when running cost and filter performance matter less than price.
Amazon $63.99$63.99
6 in390 CFM34 dBA
Hon&Guan PRO 6 in Inline Fan
#4 in 6 inFull review
A low-cost 6 in EC fan with strong rated airflow. Its power draw is not published, which keeps it below documented rivals.
Amazon $76.99$76.99
6 in405 CFM32 dBA
Compare
Compare the AC Infinity CLOUDLINE S6 with any other inline duct fan →
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