Keeping a greenhouse productive means managing more than temperature. Excess humidity can encourage disease, while stagnant air can stress plants and reduce ventilation efficiency. The best greenhouse fans with humidity controllers combine dependable airflow with automatic responses to changing growing conditions.
This roundup includes wall-mounted exhaust fans, standalone controllers, compact grow-tent options, and high-capacity models for larger spaces. Use the guide below to compare control features, airflow, sizing, and installation needs before choosing a setup.
Best 10 Greenhouse Fans with Humidity Controllers Picks for 2026
Best Thermostat-Controlled Exhaust Fan
12-Inch Variable-Speed Shutter Fan
- 960 CFM airflow for spaces up to 1,400 square feet
- Thermostat control from 32–130°F
- Durable galvanized steel and aluminum construction
Best For: Large greenhouse or workshop ventilation with temperature control
Best Dedicated Humidity Controller
Dual-Stage Greenhouse Humidistat
- Controls humidifier and dehumidifier outputs together
- 5%–99% RH range with ±3% RH accuracy
- Works with fans and ventilation systems up to 1200W
Best For: Custom greenhouse systems needing humidity-triggered fan control
Best Smart Greenhouse Exhaust Fan
12-Inch Temperature and Humidity Fan
- 960 CFM airflow for areas up to 1,400 square feet
- Digital temperature and humidity triggers
- 12 speeds plus a 24-hour timer
Best For: Large greenhouses needing integrated, adjustable ventilation
Best Add-On Humidistat
Adjustable Thermostat Humidity Controller
- Temperature settings from 60–120°F
- Humidity settings from 30%–90%
- Mechanical dials and included wiring diagram
Best For: Adding basic humidity control to a compatible greenhouse fan
High-Capacity Pick
CAMMOO 20-Inch Smart Exhaust Fan
- 4,000 CFM airflow with an efficient EC motor
- Temperature, humidity, and 10-speed control
- Touchscreen supports up to three fans
Best For: Large greenhouses needing powerful automated exhaust
Quiet Wall-Mount Pick
Amico 10-Inch Smart Exhaust Fan
- 1,068 CFM airflow with an 8-speed brushless DC motor
- Automatically responds to temperature and humidity
- Quiet 45 dB operation with remote control
Best For: Small to medium greenhouses prioritizing quiet, automated ventilation
Compact Grow-Tent Pick
2-Pack 4-Inch Oscillating Fans
- Two clip-on fans for broader plant-level airflow
- Automatic humidity control with LCD monitoring
- Quiet 25 dB operation and four speeds
Best For: Grow tents and small greenhouse areas needing targeted circulation
Compact Smart Ventilation
- 1500 CFM airflow for compact spaces
- Temperature and humidity triggers
- Steel housing with automatic shutters
Best For: Smaller greenhouses and wall-mounted installations
Mid-Size Automated Cooling
- 2000 CFM ventilation capacity
- Automatic temperature and humidity control
- Timer, alarm, and 10 speed settings
Best For: Medium-size greenhouses needing stronger airflow
Maximum Airflow Control
- Up to 3000 CFM listed airflow
- Humidity and temperature-based automation
- Durable metal housing with rain-blocking shutters
Best For: Larger greenhouses needing high-volume exhaust
Best Thermostat-Controlled Exhaust Fan – 12-Inch Variable-Speed Shutter Fan
For shoppers comparing greenhouse fans with humidity controllers, this 12-inch iLiving model is a strong ventilation-focused option when temperature control and adjustable airflow matter more than built-in humidity sensing. It delivers 960 CFM and includes a thermostat and variable-speed controller for automated thermal regulation.
Best For: Greenhouses, garages, workshops, and other spaces up to 1,400 square feet that need powerful temperature-controlled exhaust.
Pros:
- Moves up to 960 CFM and is rated for coverage up to 1,400 square feet.
- Includes variable-speed and thermostat controls with a 32–130°F temperature range.
- Galvanized steel housing, aluminum shutters and blades, OSHA-compliant guards, and UL/cUL listing support durable installation.
Cons:
- It provides temperature control rather than a dedicated humidity controller.
- The listed noise level is under 65 dB, which may be noticeable in quieter spaces.
- It offers three speeds, fewer than some digital-control alternatives.
This fan is a practical choice for high-volume greenhouse exhaust when a thermostat is sufficient. If humidity-triggered operation is essential, pair it with a separate humidistat controller.
Best Dedicated Humidity Controller – Dual-Stage Greenhouse Humidistat
Among greenhouse fans with humidity controllers, the VIVOSUN HHC-0001 stands out as a dedicated control unit rather than a fan. Its dual outputs can automate a fan or ventilation system alongside a humidifier or dehumidifier, helping maintain a target humidity level.
Best For: Greenhouses, grow tents, mushroom rooms, and other setups where fan operation must respond directly to humidity changes.
Pros:
- Dual relay outputs can control a humidifier and dehumidifier simultaneously.
- Supports fans and ventilation systems with a 5%–99% RH range and ±3% RH accuracy.
- Offers dual LED displays, humidity alarms, sensor-fault alerts, and compressor-delay protection.
Cons:
- It is a controller only, so a compatible fan must be purchased separately.
- The 1200W output rating requires attention to the connected equipment’s load.
- It does not provide the high-volume airflow of a dedicated exhaust fan by itself.
This is the most flexible option for building a humidity-managed ventilation system. Pair it with a suitably rated greenhouse exhaust fan for automatic moisture control.
Best Smart Greenhouse Exhaust Fan – 12-Inch Temperature and Humidity Fan
This iLIVING model is one of the more complete greenhouse fans with humidity controllers because its included digital controller responds to both temperature and humidity triggers. With 960 CFM, 12 speed levels, and a timer, it provides adjustable ventilation for larger enclosed spaces.
Best For: Greenhouses and utility spaces needing high airflow with digital temperature, humidity, speed, and timer controls.
Pros:
- Provides 960 CFM airflow and is designed for spaces up to 1,400 square feet.
- Digital control includes temperature and humidity triggers, 12 speeds, and a 24-hour timer.
- Fully assembled, plug-and-play installation includes a 5.6-foot power cord.
Cons:
- The control wire can be extended with a Type A USB cable, but that cable is not included.
- It is a wall-mounted exhaust fan, so installation requires a suitable wall opening.
- The included controller is button-operated rather than a dedicated dual-output humidifier/dehumidifier controller.
For buyers wanting an integrated fan and humidity-responsive controller, this is the most convenient all-in-one choice in the group. Its broad speed range also makes it easier to fine-tune airflow.
Best Add-On Humidistat – Adjustable Thermostat Humidity Controller
For a simple way to add humidity control to compatible greenhouse fans, the Hiorucet thermostat humidistat provides separate temperature and humidity settings in a wall-mounted mechanical control box. Its manual dial design favors straightforward installation and adjustment over digital readouts.
Best For: Greenhouse exhaust fans, attic ventilators, and workshops where simple manual temperature and humidity triggering is preferred.
Pros:
- Combines a 60–120°F thermostat range with a 30%–90% humidistat range.
- Finger-adjustable dials make setting the temperature and humidity points straightforward.
- Includes a wiring diagram and is intended for installation with greenhouse exhaust fans and other ventilation equipment.
Cons:
- It is an analog controller, so it lacks digital displays and advanced programming.
- Installation requires wiring to compatible ventilation equipment.
- The supplied notes identify the controller but do not specify an airflow rating or fan capacity.
This controller suits buyers who already have a compatible exhaust fan and want basic humidity and temperature automation. Confirm electrical compatibility and wiring requirements before installation.
High-Capacity Pick – CAMMOO 20-Inch Smart Exhaust Fan
For large greenhouses needing powerful ventilation, this CAMMOO model combines 4,000 CFM airflow with temperature and humidity controls. Its EC motor, 10 speed settings, touchscreen controller, and automatic shutters make it a strong option among greenhouse fans with humidity controllers.
Best For: Large greenhouses, garages, workshops, and other spaces requiring high-volume exhaust ventilation.
Pros:
- High 4,000 CFM airflow with an energy-efficient brushless EC motor.
- Precision temperature and humidity automation with 10 speed levels.
- 6-inch touchscreen controls up to three compatible CAMMOO fans.
- Automatic shutters help block dust and debris when the fan is off.
Cons:
- The 20-inch wall-mounted design may be oversized for compact growing spaces.
- It requires corded-electric installation and self-installation.
This is the most capable choice for high-airflow greenhouse ventilation in the group. The touchscreen and multi-fan support add flexibility, while the larger form factor is best suited to installations with adequate wall space.
Quiet Wall-Mount Pick – Amico 10-Inch Smart Exhaust Fan
The Amico 10-inch shutter exhaust fan is a practical choice when you want automated climate response without excessive noise. It combines 1,068 CFM airflow, humidity and temperature sensing, eight speeds, and a remote control in a plug-in wall-mount design for greenhouse ventilation.
Best For: Small to medium greenhouses, garages, sheds, and spaces where quiet operation and simple installation matter.
Pros:
- Automatically adjusts for temperature and humidity changes.
- Eight speeds, a 24-hour timer, and a 50-foot remote-control range.
- Quiet 45 dB operation from the 13W brushless DC motor.
- Automatic shutters help block drafts, rain, and insects when stopped.
Cons:
- Its 1,068 CFM capacity is substantially lower than the larger CAMMOO fan.
- The remote controller requires a battery, though the supplied note indicates up to one year of battery life.
This model offers a balanced combination of automated humidity control, quiet operation, and accessible installation. It is better suited to moderate ventilation demands than to very large greenhouse spaces.
Compact Grow-Tent Pick – 2-Pack 4-Inch Oscillating Fans
This two-pack is designed for localized airflow in grow tents and compact greenhouses rather than whole-room exhaust. Each setup includes temperature and humidity monitoring, automatic humidity activation, four speed settings, and a clamp mount, making it a flexible option among greenhouse fans with humidity controllers.
Best For: Grow tents, hydroponic setups, shelves, and small greenhouse areas needing quiet, targeted circulation.
Pros:
- Two fans expand airflow coverage around plants.
- Automatic humidity control with a built-in LCD temperature and humidity display.
- Four speed settings provide low through turbo airflow choices.
- Clip-on brackets install without tools on rods or flat surfaces.
Cons:
- The 4-inch size is intended for circulation, not high-volume greenhouse exhaust.
- Humidity control is described for the main fan, while the second fan expands coverage.
Choose this set when plant-level circulation and compact installation are more important than removing large amounts of hot, humid air. Its 25 dB operation and clamp mounting are especially useful in tents and small growing areas.
Compact Smart Ventilation – 12-Inch VEVOR Exhaust Fan
For smaller greenhouses, this 12-inch VEVOR model is a practical option among greenhouse fans with humidity controllers. Its temperature and humidity triggers can adjust across 10 speed settings, while the 1500 CFM airflow helps remove heat, stale air, and odors.
Best For: Smaller greenhouses, sheds, workshops, and wall-mounted installations needing automated humidity and temperature response.
Pros:
- Automatic temperature and humidity programming with up to 10 speed settings.
- 1500 CFM airflow supports rapid ventilation in compact spaces.
- Steel construction and closing shutters help protect against rain and small debris.
- EC motor is designed for efficient, stable operation.
Cons:
- At 67 dB, it may be noticeable in quiet areas.
- The 12-inch size and 1500 CFM capacity may be limited for larger greenhouses.
- Its listed 240-volt specification requires checking electrical compatibility before installation.
This model balances automated environmental control with a relatively compact footprint. Confirm the available power supply and wall opening, then choose it when 1500 CFM is appropriate for the greenhouse volume.
Mid-Size Automated Cooling – 14-Inch VEVOR Exhaust Fan
The 14-inch VEVOR is a strong middle-ground choice for greenhouse fans with humidity controllers. It combines 2000 CFM of exhaust capacity with temperature and humidity triggers, 10 speed levels, timers, and alarm functions for more flexible ventilation control.
Best For: Medium-size greenhouses and other spaces that need more airflow than a compact 12-inch exhaust fan provides.
Pros:
- 2000 CFM airflow quickly vents heat, stale air, and odors.
- Temperature and humidity triggers can automatically adjust fan speed.
- Ten speed settings plus timer and alarm modes offer flexible programming.
- Metal construction and automatic shutters add durability and weather protection.
Cons:
- Its 68 dB noise rating may be audible near living or working areas.
- The larger housing needs more wall space than the 12-inch model.
- Electrical requirements should be verified before installation.
With higher airflow and programmable controls, this model is a sensible step up for growers whose greenhouse needs exceed a compact fan’s capacity. Measure the mounting area and match the 2000 CFM output to the space.
Maximum Airflow Control – 16-Inch VEVOR Exhaust Fan
For larger growing spaces, the 16-inch VEVOR delivers the highest airflow in this group of greenhouse fans with humidity controllers. Its temperature and humidity sensor can manage ventilation across 10 speed settings, while the fan is rated for up to 3000 CFM in the product title and 2900 CFM in the specifications.
Best For: Larger greenhouses, workshops, and wall-mounted applications requiring high-volume exhaust.
Pros:
- High-capacity ventilation is suited to larger spaces.
- Temperature and humidity triggers automate fan-speed adjustments.
- Ten speed levels, timer functions, and alarm modes support customized operation.
- Powder-coated metal housing and automatic shutters provide a sturdy enclosure with rain protection.
Cons:
- The 70 dB noise rating may be unsuitable for noise-sensitive locations.
- It is the largest and heaviest model here, at about 15 pounds.
- The specifications list 2900 CFM, so buyers should not assume the full 3000 CFM title rating.
This is the logical choice when greenhouse size calls for maximum exhaust capacity. Its larger dimensions, higher wattage, and electrical specification make careful installation planning especially important.
How We Picked the Best Greenhouse Fans with Humidity Controllers
We evaluated the selected products by focusing on the factors that matter most in greenhouse ventilation: airflow capacity, automatic temperature and humidity control, speed adjustment, installation style, operating range, and suitability for different growing spaces. We also considered whether each product is a complete fan-and-controller system or a controller intended to operate compatible equipment.
Because greenhouse layouts vary widely, the list includes compact circulation options as well as high-CFM wall-mounted exhaust fans. Check electrical requirements, controller compatibility, and mounting dimensions before ordering.
Quick Comparison
| Best For | Typical Option | What to Look For |
|---|---|---|
| Small grow tents | Compact oscillating fan | Built-in sensor, quiet operation, easy placement |
| Small to medium greenhouses | 10- to 12-inch exhaust fan | Automatic shutter, variable speed, humidity control |
| Large greenhouses | 14- to 20-inch exhaust fan | High CFM, EC motor, broad speed range |
| Custom ventilation systems | Standalone humidistat controller | Outlet capacity, dual-stage control, sensor accuracy |
Key Buying Factors for Greenhouse Fans with Humidity Controllers
Airflow and Greenhouse Size
CFM indicates how much air a fan can move, but the ideal capacity depends on greenhouse volume, intake openings, ducting, screens, and weather. A larger fan running at a lower speed may provide steadier ventilation and less noise than a small fan operating continuously at full power.
Temperature and Humidity Automation
Look for separate temperature and humidity set points when possible. A humidistat can activate a fan when moisture rises, while temperature control can increase ventilation during hot periods. Dual-stage controllers are useful when you need to manage both a humidifier and a dehumidifying or exhaust device.
Speed Control and Motor Type
Variable-speed and multi-speed models offer better control than single-speed fans. EC motors can provide efficient, quieter operation across a wider adjustment range, but verify that the included controller is compatible with the motor and power supply.
Installation and Environmental Protection
Wall-mounted shutter fans generally need a suitable framed opening and protected electrical connection. Confirm the fan’s dimensions, voltage, amperage, shutter clearance, and any required weather protection. Keep controllers and plugs away from irrigation spray and condensation.
Who Should Buy Which Greenhouse Fans with Humidity Controllers?
Choose a compact sensor-equipped fan for a grow tent, propagation shelf, or small enclosed area. A 10- or 12-inch automatic shutter fan is a practical fit for many small and medium greenhouses. For larger structures or hotter climates, consider a 14-, 16-, or 20-inch high-CFM model, especially when the fan supports variable speed.
A standalone humidity controller is best for growers who already own a compatible fan, humidifier, or dehumidifier and want more precise automation. Before buying, confirm the controller’s maximum wattage and outlet design. For the most reliable results, pair exhaust ventilation with adequate intake openings, monitor actual greenhouse humidity with a separate hygrometer, and adjust settings gradually as plant size and outdoor conditions change.