I purchased an Electronic Air filter to replace my standard HVAC filter. The filter came with a 24V transformer that plugs into a standard AC outlet, but it has been recommended to me to wire it directly to the 24V transformer on the HVAC controller so that it is only "on" when air is blowing past it. (In addition, I don't have an AC outlet in the room, so I have an extension cord running across the floor!)
Which wires can I tie this into so that the filter will receive power when the fan, and/or, the Heat/AC is on?
Thanks for any help.