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
The VIVOSUN AeroZesh T6 rates 4.0 among 6 in inline duct fans; the VIVOSUN AeroZesh T4 rates 3.9 among 4 in ones. The VIVOSUN AeroZesh T4 costs $18 less ($71.99 vs $89.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
VIVOSUN AeroZesh T4
#1 in 4 inFull review
A very efficient 4 in EC fan with a 10-speed controller and on/off cycle modes, at a lower price than the CLOUDLINE S4.
Amazon $71.99$71.99
Scores side by side
These two sit in different duct size classes (6 in and 4 in), and each is scored against the reference points for its own class, so a rating says how well each does among its own duct size peers. How we rank explains each factor.
| Factor weight | VIVOSUN AeroZesh T6 | VIVOSUN AeroZesh T4 |
|---|---|---|
| Overall rating | 4.0/5 | 3.9/5 |
| Value 25% | 61 $22.06 per 100 CFM ($89.99, 408 CFM) | 64 $34.28 per 100 CFM ($71.99, 210 CFM) |
| Efficiency 25% | 96 11.7 CFM per watt (408 CFM, 35 W), from a power figure labeled average | 83 10.5 CFM per watt (210 CFM, 20 W), from a power figure labeled average |
| Airflow 15% | 79 408 CFM through 6 in duct | 75 210 CFM through 4 in duct |
| Noise 15% | 80 32 dBA at full speed | 91 28 dBA at full speed |
| Controls 10% | 55 speed controller included, timer or cycle modes | 55 speed controller included, timer or cycle modes |
| Warranty 10% | 25 2-year warranty | 25 2-year warranty |
Specifications
| VIVOSUN AeroZesh T6 | VIVOSUN AeroZesh T4 | |
|---|---|---|
| Performance | ||
| Duct size | 6 in | 4 in |
| Rated airflow | 408 CFM | 210 CFM |
| Power at full speed | 35 W | 20 W |
| Power figure | Labeled average | Labeled average |
| Airflow per watt | 11.7 CFM/W | 10.5 CFM/W |
| Price per 100 CFM | $22.06 | $34.28 |
| Noise at full speed | 32 dBA | 28 dBA |
| Top speed | 3,000 RPM | 3,000 RPM |
| Controls | ||
| Motor | EC | EC |
| Controller | 10-speed controller with cycle modes | 10-speed controller with cycle modes |
| Speeds | 10 | 10 |
| Temperature and humidity control | No | No |
| Phone app | No | No |
| Timer or cycle modes | Yes | Yes |
| Build | ||
| Housing | Plastic | Plastic |
| Ingress rating | IP44 | IP44 |
| Voltage | 110-240 V | 110-240 V |
| Warranty | 2 years | 2 years |