Originally Posted by clubhouse
to answer your original question though, if actually filling the FW holding tank it can easily take 20min, that's a gallon every 15 seconds.
Clubhouse is correct. We have twin 40's on our Eagle and fill it with the hose about half on. This seems to allow the tanks to vent better. It easily takes 15-20 minutes to do this way. We also stop the flow when 3/4 full and turn the pump on to fill the 10 gallon water heater then resume filling the tanks the rest of the way.