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
4 in226 CFM8.1 CFM/W26 dBA
3.2/5
A low-cost 4 in EC fan with strong rated airflow. Its power draw is not published, which keeps it below documented rivals.
- 212 CFMAirflow
- 28 dBANoise
- ECMotor
Check price at Amazon$63.99
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Low price for its rated airflow
- Metal housing and stepless speed control
Cons
- Power draw and warranty not published, so running cost is unknown
- No static pressure rating published
The Hon&Guan PRO family
Every Hon&Guan PRO model we rank, smallest first. Ratings compare each against its own duct size.
| Model | Airflow | Rating | Price |
|---|---|---|---|
| Hon&Guan PRO 4 in Inline Fan (this one) | 212 CFM | 3.2/5 | $63.99 |
| Hon&Guan PRO 6 in Inline Fan | 405 CFM | 3.1/5 | $76.99 |
| Hon&Guan PRO 8 in Inline Fan | 830 CFM | 3.1/5 | $99.99 |
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 | HI-100PE |
|---|---|
| Performance | |
| Duct size | 4 in |
| Rated airflow | 212 CFM |
| Price per 100 CFM | $30.18 |
| Noise at full speed | 28 dBA |
| Controls | |
| Motor | EC |
| Controller | Stepless speed controller |
| Speeds | Stepless |
| Temperature and humidity control | No |
| Phone app | No |
| Timer or cycle modes | No |
| Build | |
| Housing | Metal |
| Ingress rating | IP42 |
Alternatives in this duct size
Spider Farmer 4 in Inline Fan
#4 in 4 inFull review
A quiet, efficient 4 in EC fan for small grow tents, priced below the CLOUDLINE S4.
Amazon $79.99$79.99
4 in205 CFM7.6 CFM/W26.8 dBA
AC Infinity CLOUDLINE A4
#6 in 4 inFull review
The budget member of the CLOUDLINE 4 in range, with the same controller and build but less airflow than the S4. Worth it for its higher static pressure behind a small carbon filter.
Amazon $79.99$79.99
4 in165 CFM4.7 CFM/W29 dBA
Compare
Compare the Hon&Guan PRO 4 in Inline Fan with any other inline duct fan →
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