Tjernlund DB-2 Duct Booster Fan - 275 CFM Airflow for Enhanced Heating & Cooling Efficiency | Perfect for HVAC Systems, Home Ventilation & Basement Air Circulation

So we live in a 1950s bungalow with inadequate air distribution and our upstairs is freezing in the winter, hot in the summer. 8-10 degree differential. Bought this along with the pressure switch. Easy to install and quiet. Pressure switch and booster fan instructions hard to understand, so here is how I did it. Three colors in fan, I used 14/2 wiring and connected green to green, black to black and white to white inside the fan. The pressure switch must be completely vertical when installed. Wire the wire from fan to pressure switch as green to ground inside pressure switch, black to switch side of pressure switch. White does not get used in pressure switch. Run 14/2 from a junction box and hook black to common of pressure switch, white to other white (neutral is not needed in switch). Hook green to ground in switch, and I used a clamp ground on the cold water line. And it works anytime the heater/ac kicks on because the pressure switch takes the ways on power and connects to fan power. Instructions do not explain like that. In my house, black is power, white is neutral, and green is ground, just like it is supposed to be.