The newly redesigned heater unit was easy to install and hopeful will not bust a seal on the tank as did the last unit. It is clear that this new unit was in response to field problems with the original design. They should have included the high temperature food grade tubing with the unit as the end nearest to the heater had deteriorated badly. I ordered the tubing from another source, (5/16" ID x 7/16" OD x 1/16" Wall Norprene® Tubing). The newly designed inlet water filter is compact but does not fit in my installation as there is not enough space so I will stay with the original filter style. A exchange for a replacement cartridge would have been nice as it seems a waste to not use the new unit.