AC Infinity CLOUDLINE T4
#3 in 4 inFull review
The S4 fan paired with a temperature and humidity controller and WiFi app. For a small grow tent that should run itself.
Amazon $119$119
The AC Infinity CLOUDLINE T4 rates 3.5 among 4 in inline duct fans; the AC Infinity CLOUDLINE A6 rates 3.0 among 6 in ones. The AC Infinity CLOUDLINE A6 costs $29.01 less ($89.99 vs $119).
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.
AC Infinity CLOUDLINE A6
#8 in 6 inFull review
A cheaper 6 in CLOUDLINE with less airflow and a little more noise than the S6. A fine fit for a tent that does not need the full 425 CFM.
Amazon $89.99$89.99
Scores side by side
These two sit in different duct size classes (4 in and 6 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 | AC Infinity CLOUDLINE T4 | AC Infinity CLOUDLINE A6 |
|---|---|---|
| Overall rating | 3.5/5 | 3.0/5 |
| Value 25% | 15 $52.65 per 100 CFM ($119, 226 CFM) | 46 $25.57 per 100 CFM ($89.99, 352 CFM) |
| Efficiency 25% | 56 8.1 CFM per watt (226 CFM, 28 W) | 27 5.4 CFM per watt (352 CFM, 65 W) |
| Airflow 15% | 88 226 CFM through 4 in duct | 51 352 CFM through 6 in duct |
| Noise 15% | 97 26 dBA at full speed | 74 34 dBA at full speed |
| Controls 10% | 100 speed controller included, temperature and humidity control, phone app, timer or cycle modes | 40 speed controller included |
| Warranty 10% | 25 2-year warranty | 25 2-year warranty |
Specifications
| AC Infinity CLOUDLINE T4 | AC Infinity CLOUDLINE A6 | |
|---|---|---|
| Performance | ||
| Duct size | 4 in | 6 in |
| Rated airflow | 226 CFM | 352 CFM |
| Static pressure (not scored) | 223 Pa | 394 Pa |
| Power at full speed | 28 W | 65 W |
| Power figure | Max power draw | Max power draw |
| Average power (not scored) | 21 W | 35 W |
| Airflow per watt | 8.1 CFM/W | 5.4 CFM/W |
| Price per 100 CFM | $52.65 | $25.57 |
| Noise at full speed | 26 dBA | 34 dBA |
| Top speed | 2,800 RPM | - |
| Controls | ||
| Motor | EC | EC |
| Controller | Environment controller | 10-speed controller |
| Speeds | 10 | 10 |
| Temperature and humidity control | Yes | No |
| Phone app | Yes | No |
| Timer or cycle modes | Yes | No |
| Build | ||
| Housing | Plastic | Plastic |
| Ingress rating | - | IP44 |
| Voltage | 100-240 V | 100-240 V |
| Warranty | 2 years | 2 years |