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 $89.99The VIVOSUN AeroZesh T6 is the better inline duct fan overall, rated 4.0 to 2.4. The VIVOSUN AeroZesh T6 leads on value, airflow and controls. The Fantech FG 6 wins on warranty. The VIVOSUN AeroZesh T6 costs $111.01 less ($89.99 vs $201).
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.
A code-approved metal fan for bathroom, kitchen or radon exhaust where a contractor wants a long-lived, listed unit.
Amazon $201Which should you buy?
- Choose the VIVOSUN AeroZesh T6 for value ($22.06 per 100 CFM ($89.99, 408 CFM) vs $65.90 per 100 CFM ($201, 305 CFM)), airflow (408 CFM through 6 in duct vs 305 CFM through 6 in duct) and controls (speed controller included, timer or cycle modes vs no controller included).
- Choose the Fantech FG 6 for warranty (5-year warranty vs 2-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 6 in inline duct fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | VIVOSUN AeroZesh T6 | Fantech FG 6 |
|---|---|---|
| Overall rating | 4.0/5 | 2.4/5 |
| Value 25% | 61 $22.06 per 100 CFM ($89.99, 408 CFM) | 0 $65.90 per 100 CFM ($201, 305 CFM) |
| Efficiency 25% | 96 11.7 CFM per watt (408 CFM, 35 W), from a power figure labeled average | 15 4.4 CFM per watt (305 CFM, 70 W) |
| Airflow 15% | 79 408 CFM through 6 in duct | 28 305 CFM through 6 in duct |
| Noise 15% | 80 32 dBA at full speed | 50 full-speed noise not published (neutral score used) |
| Controls 10% | 55 speed controller included, timer or cycle modes | 0 no controller included |
| Warranty 10% | 25 2-year warranty | 100 5-year warranty |
Specifications
| VIVOSUN AeroZesh T6 | Fantech FG 6 | |
|---|---|---|
| Performance | ||
| Duct size | 6 in | 6 in |
| Rated airflow | 408 CFM | 305 CFM |
| Power at full speed | 35 W | 70 W |
| Power figure | Labeled average | Rated power |
| Airflow per watt | 11.7 CFM/W | 4.4 CFM/W |
| Price per 100 CFM | $22.06 | $65.90 |
| Noise at full speed | 32 dBA | - |
| Top speed | 3,000 RPM | 2,703 RPM |
| Controls | ||
| Motor | EC | AC |
| Controller | 10-speed controller with cycle modes | None included |
| Speeds | 10 | - |
| Temperature and humidity control | No | No |
| Phone app | No | No |
| Timer or cycle modes | Yes | No |
| Build | ||
| Housing | Plastic | Metal |
| Ingress rating | IP44 | IP44 |
| Voltage | 110-240 V | 120 V |
| Warranty | 2 years | 5 years |
