Fan Speed Controllers

Seasonal temperature fluctuations mean that you won't always need your extractor fans to run at full speed. This is where a fan speed controller comes into its own allowing you to precisely adjust your fan speeds (and therefore extraction rates) to perfectly balance intake and extraction rates to maintain the perfect temperature. There are a number of ways of adjusting the speed of a fan, and the cheapest and most prevalent method is with a resistive type controller. these controllers in crease resistance and slow the fans that way. This can cause additional noise to be created by some fan models. The other way is a voltage controller which uses a variac to alter the actual power supplied to the fan. These controllers are much more heavy duty and do not create any additional fan noise, but they are significantly more expensive.