Product review (4 stars): A good and viable replacement kit that eliminates the need for the door flap heater element.
This door repair kit, although kind of spendy, does exactly what it is intended to do.  Since this door contains a neoprene seal pad, the heating element found on older doors is no longer needed.  This might save just a little on your electric bill and is a simpler solution; a case where simple is better.  The kit is fairly easy to install, as long as you pay attention to how the old door system is removed.  Simply reverse the process to install the new door and all should be well.  There are several really good Youtube videos that walk you through the removal and replacement steps.