AeroZesh Inline Fan with E42A Controller by VIVOSUN — Smart Grow Tent Exhaust Fan
VSN-AZS-E42A (4IN)
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Pairs well with
The VIVOSUN AeroZesh S-Series pairs a PWM-controlled EC inline fan with the GrowHub E42A WiFi controller in one box — exhaust ventilation that adjusts itself to your tent's temperature and humidity instead of running flat out around the clock. The mixed-flow design pushes air across long duct runs, and the E42A's built-in gauge and probe track conditions inside and outside the tent, including VPD, all from the VIVOSUN app. Available in 4″, 6″ and 8″ duct sizes moving up to 830 CFM.
Specifications by Size
| S4 (4″) | S6 (6″) | S8 (8″) | |
|---|---|---|---|
| Max Airflow | 208 CFM | 405 CFM | 830 CFM |
| Fan Speed | 3000 RPM | 3100 RPM | — |
| Power | 20W | 35W | — |
| Noise Level | 39 dBA | 45 dBA | 51 dBA |
| Motor | PWM-controlled EC motor, mixed-flow design | ||
| Controller | GrowHub E42A temperature & humidity WiFi controller with probe | ||
| Input | 110–240V, 50/60Hz | ||
Enter your tent dimensions and get a matched fan size in seconds.
Fan Size Calculator- Mount the fan at the top of the tent — warm, humid air rises, so a high exhaust point clears it fastest
- Balance exhaust with passive intake vents or an intake fan so fresh air and CO₂ can actually get in
- Let the E42A do the work — set your temp and humidity triggers once and the fan speed follows the environment instead of you chasing it
How to Set It Up
Pairs Well With
Adds an extra smart port to your E42A so more VIVOSUN gear runs off the one controller.
AeroWave E Series Clip FanIn-tent circulation to match your exhaust — same EC efficiency, same app, same ecosystem.
Carbon FiltersMatch a 4″, 6″ or 8″ filter to your fan size and scrub exhaust odour before it leaves the tent.
Clip Fans & CirculationExhaust moves air out — circulation fans keep it moving across the canopy in between.
Common Questions
Does it come with the E42A controller?
Yes. Every size ships with the GrowHub E42A temperature and humidity WiFi controller, including the built-in gauge and one environment probe.
Can I control it from my phone?
Yes. The E42A connects to the VIVOSUN app over WiFi, so you can monitor live temperature, humidity and VPD data and adjust ventilation from anywhere.
Will it adjust fan speed automatically?
Yes. Set temperature and humidity thresholds on the E42A and the fan speed responds automatically as conditions change — plus timers, cycles and schedule programming.
Which size do I need for my tent?
The 4″ (208 CFM) suits small tents and propagation spaces, the 6″ (405 CFM) covers most single tents including filtered runs, and the 8″ (830 CFM) handles large tents and rooms. Use the Fan Size Calculator above for a match based on your exact dimensions.
Can it run other VIVOSUN smart devices?
Yes. The E42A is the hub of VIVOSUN's GrowHub platform — compatible smart devices like the AeroWave clip fans can be unified on the same controller and app, and the E25 expansion adds extra ports.
Select Size
Ventilation That Runs Itself
Fan, controller and probe in one box — set your thresholds and let it work.