Fans & Ventilation
Control airflow and balance intake/extraction with our range of fan controllers and modules from Gavita, ONA, and Trolmaster. Proper ventilation control is essential for temperature and humidity management — shop AC and EC fan controllers, speed adapters, and balancing modules to keep your grow room air moving efficiently.
Why fan balance matters
Extraction and intake fans need to work in balance — too much extraction relative to intake creates negative pressure that can pull odours through gaps; too little extraction lets heat and humidity build up. Fan balancer modules (like the Gavita FB1) let you offset intake fan speed relative to extraction, helping maintain stable, controlled pressure throughout your grow space.
AC vs EC fan control
AC (standard) fans and EC (electronically commutated) fans require different control modules — an AC fan controller like the Gavita EFM1 won't work with an EC fan, and vice versa. Always check your fan's type before purchasing a control module.
Temperature-responsive fan speed
Some controllers, like the Trolmaster BETA-2, adjust fan speed automatically based on real-time temperature readings — increasing airflow as heat rises, easing back as conditions cool, rather than running at a fixed speed regardless of actual need.
FAQ
Do I need a fan controller, or can I just plug my fan in directly?
For basic setups, direct connection works, but a controller lets you fine-tune speed, balance multiple fans, and automate responses to temperature — increasingly valuable as your setup grows in complexity.
What's the difference between an AC and EC fan?
EC fans are generally more energy-efficient and offer finer speed control than standard AC fans, but require EC-specific control modules rather than standard AC fan controllers.
How do I know if my grow room has correct pressure balance?
Signs of imbalance include persistent odour leaks (too much negative pressure) or heat/humidity buildup (too little extraction) — a fan balancer module can help correct this without replacing your existing fans.