Acme Miami 9460-A Dryer Booster with Alarm - Silver

I bought this booster fan for a new dryer line that I installed in my house. The previous homeowner had used metal flexible dryer duct to connect the dryer to the exit point of the exhaust line from the house. It could take up to two and a half hours to dry a load of laundry. The line was too long for the dryer, had too many turns, and inappropriately used flexible duct. The line was clogged and leaked. It was a mess.I decided to replace the ductwork with galvanized steel duct and to redirect the path of the dryer line. Because the new path would have been too long for the dryer alone (and the original path was also too long), I decided to install a dryer booster. I chose the booster from Acme Miami for two reasons, which are related to each other: (1) because the booster can be installed at any point in the exhaust line, and (2) because the motor was isolated from the exhaust flow. By having the motor outside of the exhaust flow, the damp exhaust air does not pass through the motor. Thus, there can be no lint buildup in the motor.I chose the model with the alarm because I installed the booster in a crawl space below our laundry room. The alarm makes a noise when the booster starts up when the dryer starts up, much like your car beeps when you put the key in the ignition. It's hard to hear, however, because of its location. Despite this fact, I am really happy with the booster fan and recommend it highly, with the alarm or without. Our drying times have been reduced to 30 minutes for smaller loads and 60 minutes for heavy loads.I installed the booster about two feet from the exit of the dryer, as allowed by the instructions. The instructions indicate that the booster fan can be installed at any point along the exhaust line. You might not believe it, but this is really the case. I'm sure this can be explained by fluid dynamics.