* Undersoil Fan only for kits manufactured before Jan 2021
The undersoil fan assists in heating the soil in the winter, and in the summer it assists in cooling the Growing Dome. It is never a bad idea to have a spare undersoil fan! The small undersoil fan is mounted inside the undersoil box for your central air system.
As with your vent openers, it is paramount to ensure that all your fans are operating correctly. The solar cooling fans may be winterized, and not operational, but the undersoil fan should be running all year.
4" 12V .32AMP