What current unit would you recommend that we could replace the 112 with the least complications ??
While there is not a drop in replacement unit for your 112, there is a unit that will compare in capacity. This unit is the 700 or 700M. The 700 will require a smaller plenum hole in your duct work so some modification will be needed. We offer two types of controls; an automatic control and a manual control. Your 112 used the manual control so if you are looking to keep thing simple, I would suggest the model 700M. With the 700M you will be able to use the same wiring that your old 112 used.