The Best Greenhouse Fan Controllers in 2021
Solar Innovations

The Best Greenhouse Fan Controllers in 2021

Depending on where you live, your greenhouse may get excessively hot during the day. You need stable temperature so that your crops grow well, which means a timer-controlled fan won’t be enough. You need a temperature-controlled ventilation system for your greenhouse.

A greenhouse fan controller is a thermostat that measures your nursery’s temperature and turns the ventilator on or off accordingly. This article will compare three of the best greenhouse controllers on the market in 2021.

Fan Controllers for Greenhouses

Product NameProduct PreviewBuy NowOur RatingCostMax Output LoadTemperature RangeProduct DimensionsCord Length
WILLHI WH1436ACheck Price8.9/10$$1100W (110V)-58 ~ 230 F
-50 ~ 110 C
4.9" x 3.6" x 1.8"3'
BN-Link Digital Cooling ThermostatCheck Price8.5/10$1000W (100V)40-108°F4.5" x 3.5" x 1.6"6'
Inkbird ITC-308Check Price9.0/10$$1100W (110V)-58~248 ° F
-50~120 °C
5.5" x 2.7" x 1.3"5'

A fan controller for a greenhouse needs to be easy to use and accurate. A fair price tag also won’t hurt. We’ll get into the nitty-gritty of each product to help you decide the most suitable one.

Learn more about greenhouse ventilation if you don’t know why fan controllers are so important.

WILLHI WH1436A

WILLHI is a Chinese company that specializes in manufacturing temperature and humidity controllers. This is their most sold product. 

This product has a cooling and heating option, so if you happen to have a heater in your greenhouse, you can plug it in and keep the temperature within a specific range of degrees for your crops!

Specs

  • Thermostat resolution: 0.1 degrees
  • Thermostat Accuracy: 0.5 degree
  • Maximum Load: 10 Amperes

Pros

  • Has both cooling and heating options
  • Includes both Fahrenheit and Celsius settings
  • Has temperature alarms for when it gets too hot
  • It has a power switch to completely turn off everything

Cons

  • Not the easiest to set up; you’ll need to understand the manual
  • More expensive than other competitors

BN-Link Digital Cooling Thermostat

BN-Link is a distributor of home appliances. This product is the most economical choice. It’s also relatively easy to start and set-up. There are only three control buttons and an LED screen, and the probe length is 6 ft.

Specs

  • Thermostat resolution: 0.1 degrees
  • Thermostat Accuracy: 1 degree
  • Maximum Load: 8.3 Amperes

Pros

  • Less expensive than its competitors
  • Super easy to set up
  • Includes both Fahrenheit and Celsius settings

Cons

  • The maximum amperage is only 8.3A.
  • Shorter probe length

Inkbird ITC-308

Inkbird is a promising company in the temperature control industry. The ITC-308 is their best seller. It has two displays, which help you see the current temperature and the set temperature. 

This thermostat comes in another version, called the Wi-fi ITC 308, which can be connected to the InkbirdSmart app and allow you to control and keep up with your greenhouse through your mobile device. The application is available on both iOS and Android platforms.

This product has both heating and cooling options for more accurate control in case you also plug in a greenhouse heater.

Specs

  • Thermostat resolution: 0.1 degrees
  • Thermostat Accuracy: 1 degree
  • Maximum Load: 10 Amperes

Pros

  • Two displays for set and current temperatures
  • Easy to set up 
  • It comes in a wifi-enabled version that helps you control it through your mobile

Cons

  • Short probe length
  • More expensive than other options

A Toe-To-Toe Greenhouse Fan Controller Comparison

The Best Greenhouse Fan Controllers in 2021
Greenhouse MegaStore

We’ll discuss some of the most important features and see how these products compare.

Design

BN-Link Digital Cooling Thermostat review

Good design features give the product better functionality and more durability. We’ll be comparing the probe length, the screen design, and any other design feature that helps contribute to the product’s quality.

The WILLHI

The WHILLHI features a large LED screen that can fit four digits. This helps in setting decimal increments in temperatures above 100. 

The sensor cable length is 9.8ft, which should be good for your greenhouse.

The BN-LINK

The BN-Link’s screen isn’t as powerful as the WHILLI’s. Additionally, its probe length is only 6ft long. However, it has a simpler interface with only three buttons that do just what you need.

The Inkbird

The Inkbird comes with two screens. This is a great feature that clearly shows you the current temperature and the desired temperature. 

The probe length is 6.56 ft, which is a little short compared to the WILLHI; however, if you don’t need a long probe for your greenhouse, this thermostat may be a reasonable choice.

Winner

The Inkbird wins here. Even though it doesn’t have the longest sensor length, the dual-screen makes the product more user-friendly.

In addition, the option of purchasing a version that supports a mobile device makes monitoring your greenhouse a piece of cake.

Temperature Range

Inkbird ITC-308 review

Depending on the crops you’re growing, you may want the temperature to stay at a specific degree of warmth. Some thermostats allow you to freely go up and down a wider range than others. 

The WILLHI

The WILLHI will go all the way up to 230 degrees Fahrenheit and as low as -58 degrees. This low feature is meant for refrigeration purposes and won’t be needed for greenhouse purposes.

The BN-LINK

The BN-Link works between 40 and 108 degrees Fahrenheit. This is good for just control purposes, but it won’t notify you if your greenhouse reaches critically high temperatures.

The Inkbird

The Inkbird works between -22 and 167 degrees Fahrenheit. Although that’s a sufficient range, it’s still a narrower range than the WILLHI’s.

Winner

Our winner is the Inkbird. Although it does have an impressive temperature range, and the large range coupled with its safety buzzer alarm and smart application option can be a lifesaver.

Safety Functions

WILLHI WH1436A review

Safety functions are built in a temperature control device to ensure no mishaps occur.

The WILLHI

The WILLHI has high and low-temperature alarms. This will notify you when the temperature gets too high or too low for your plants so that you can quickly intervene.

The WILLHI also has an auto shut-off timer. Which is an option you can set to stop your fan from running after a specified amount of time regardless of the temperature. It keeps your fan safe.

The BN-LINK

The BN-Link doesn’t have any safety features.

The Inkbird

The Inkbird comes with a buzzer alarm for too high and too low temperatures. However, it doesn’t have a shut-off timer.

Winner

The WILLHI has two much-needed safety features. It comes occupied with both the buzzer and the timer, which ranks it first in the safety aspect, in our opinion.

The Bottom Line – Fan Controllers and Your Greenhouse

If you’re looking for safety, the WILLHI has the best safety options of all the products. It also has the best build quality out of the three, providing a more user-friendly experience. This makes it the more expensive product. 

On the other hand, if you just want a greenhouse fan controller that does the job efficiently, have a look at the BN-LINK. It doesn’t come with innovative features, but it has all the basics.

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