Product review (5 stars): WOW, what a difference!
Did a lot of reading up on this & am very glad to have gotten.  Installed in a pool deck kegerator in Florida, the area is covered but still hot & the tower isn't insulated well enough to keep beer cold in that part of the lines.  Set up didn't take too long, hardest part was running the plug as I didn't want it dropping out the door.  The Co2 port was too small to run hose & plug together so I removed the cover plate to the Co2 port, removed the Co2 hose, drilled a hole at the edge of the port & ran the power cord through & replaced the Co2 hose, perfect fit & the cover plate covered the drill hole.
Removed the tower head completely, laid blower hose against tower & marked hose to 2" from top of tower, inserted blower hose from bottom of tower then fed hose into box, added insulation around slight gap to Co2 portal.  Reassembled tower, made blower connections & within an hour there was condensation on tap handle & very top of tower, pulled hose down about an inch.  Lost some temperature during the install but about 3 hours later box & beer were back to temp.  Overnight the entire tower is dripping with condensation,  Power cord comes with a rocker switch which makes it easy to turn on/off, got the one with rocker switch on blower unit which I really didn't need as the cord/plug is easily accessible.  Will now turn off blower when not needed & back on a few hours before happy hour!
Filled a glass 12 hours later & it tempted out at 39.2 with an internal box temp of 38.9, perfect head of foam where before the foam was more than double.