What is the difference between a MiniTherm JVi and a MiniTherm JVH?
There is no difference. MiniTherm JVi is the registered name of our fan-assisted residential hydronic boiler (“i” stands for induced draft). The model numbers we use for this product begin with JVH, the “H” designating a hot surfaced pilot ignition. In the same manner, MiniThherm II is the registered name of our natural draft residentially hydronic boiler. The model numbers we use for this product begin with either JVT or JVS, for standing pilot or pilot spark ignition, respectively.