4″ Smart Grow Tent Fan with Auto Climate Control – 4-Speed Oscillating Circulation Fan with LCD Display for Hydroponics, Greenhouse, Reptile Enclosure – Precise Temp & Humidity Monitoring
$35.99
Price: $35.99
(as of Oct 23, 2025 12:45:54 UTC – Details)
From the brand
YUANWEITECH | Tools for Nature Enthusiasts
We make professional tools for gardening and reptile keeping. Our smart irrigation systems and bioactive terrariums combine innovation with quality.
Designed for ease of use:
• Intuitive functionality
• Ergonomic designs
• Reliable performance
YUANWEITECH: Explore Nature Better
Water your garden effortlessly, hands-free
Fan&Drip Irrigation
1.🌡️ Smart Auto Temperature & Humidity Control Customize ideal growing conditions (e.g. 25°C/60%RH) – fan automatically activates when thresholds are exceeded and stops when optimal levels are reached.
2. 📊 Built-in LCD Display & Precision Sensors Real-time monitoring with accurate digital readouts of temperature and humidity – no extra equipment needed.
3. 🌀 4-Speed Airflow Customization Gentle/Standard/Powerful/Cycle modes to match different plant needs – circulation mode ensures even airflow distribution.
4. 🔧 Universal Mounting System ◦ Includes adjustable U-bracket (fits 0.12-0.9″ poles), sturdy clamps, and non-slip pads for grow tents, greenhouses, terrariums, or desktop use.
5.🌿 Professional-Grade Plant Care From home hydroponics to commercial grow rooms, our smart climate control system reduces maintenance effort while optimizing plant health.Versatile & Easy to Install: From Tents to Tanks, It Fits Everywhere! Includes adjustable U-brackets for round, square, or flat rods (0.12-0.9 inches). Use in grow tents, greenhouses, reptile tanks, or even as a desktop fan.
9 reviews for 4″ Smart Grow Tent Fan with Auto Climate Control – 4-Speed Oscillating Circulation Fan with LCD Display for Hydroponics, Greenhouse, Reptile Enclosure – Precise Temp & Humidity Monitoring
Add a review
Related Products
$35.99
Vladimir –
Great product
Great product
Linda Presto –
Great greenhouse fan
exactly what I needed for my greenhouse! Compact and easy to use/set up. I love it!
Allynn M Wilkinson –
Great for my green house
Despite not being in full sun, my little greenhouse can get VERY hot during the height of summer. This fan really helps to circulate the air towards the vents and just, generally keep things cool. It has to be plugged in but it wouldn’t be able to be reliably on if it wasn’t. The temperature and (especially) humidity display is very helpful. It’s small but really quite powerful for it’s size. It doesn’t make too much noise and can be easily angled to blow in a a particular direction
FEW –
Great Little Fan For 3D Printer Cooling
We ordered this fan planning to use it in our greenhouse. Unfortunately, the size didn’t sink in when we were looking at it.I have been trying to figure out what we could do with it. Last night I was 3D printing and wanted to cool off the build plate faster so that I could take my printed part off and get the next piece going. Then it hit me. I have the perfect fan for this. And it only costs $36.I dug out an extra tripod and mounted the fan on it. Now I can cool off the build plate quickly. The fan is really strong, has 4 speed setting, temperature and humidity monitoring and moves up and down. The up and down movement is what I really needed, the high air movement is great and it is quiet. A real quality system. I don’t need or use the temp and humidity sensor, but this fan is the answer to my slowly cooling build plate.This fan is powered by a USB C plug and it came with a decent length cable. And SURPRISE, it includes the wall charger. I wish other companies would do that. I actually have taken stars off for not including a wall charger. Can’t ad one here though.I HIGHLY recommend this Smart Grow Tent Fan from YUANWEITECH if you need a fan to cool your 3D printer or if you need a small but powerful grow tent fan. It really works for both.
William S. –
Grow Fan
Great idea I just hope the 2nd 1 I have coming works longer then 2 days. Update today 9 18 2025 received new fan today works great was missing 1 minor part but no big deal breaker will update again in 1 month unless it dies before then. Ok my new 1 is junk as well the humidity probe went up to 99% humidity and stayed there so 1 star and product needs way more RnD. Returned
Robert Jackson –
Works pretty good.
Convenient little fan, using it in my camper. Thanks to it’s small size I have more room for other things instead of a large fan. This works pretty good, I’d buy another one
Amazon Customer –
Nice Little Fan With Many Options
This little fan has many options and seems well made. As expected, this fan does not have a rechargeable power source and needs to be plugged in at all times. You can plug it into a standard usb outlet, a traditional power outlet (with use of the included adapter), and I discovered that it can be powered by a small power bank, although it drained the power with 2 hours of steady use.I really like that you can set the item to come on automatically and shut off automatically based on temperature and humidity rather than time. The fan is small but seems relatively powerful and oscillates if you wish. I am still playing around with the programming, but it really has a lot of features in a small package.This fan can sit on a shelf or mount to a pole, which is super handy in a greenhouse setting as it can be raised and lowered depending on the height of plants and where you want your air flow.I got this fan for use in either my small greenhouse or chicken coop. I think it will do a pretty good job in either location.
Kat –
Nice fan for small greenhouse
With warmer weather now, this is proving to be really helpful in my greenhouse. It’s a small fan, but puts out enough air for my 10ft x 16ft lean-to greenhouse…. not strong, but just enough to keep the air from getting stagnant. Set-up was okay – I’m not generally good at these things, but figured it out. The humidity control is particularly helpful since I have a lot of tropical plants that love their humidity. The fan will also be helpful in spring for sowing tomatoes, peppers, etc. Air circulation not only helps the mature plants, but also helps seedlings strengthen as they develop. There are different mounting options, which is useful as well. I think the price is fair for this item — it’s working well and I really appreciate that it’s automatic.
Terrance Cuticchio –
Small fan but packs the punch of a big fan