“There are hot water coils designed to fit inside traditional free-standing woodstoves, and hydronic water jackets designed to fit inside a conventional masonry fireplace”
This is exciting to me.
The references at the bottom seem to be selling complete outdoor furnaces, not the simple heat exchanger in the photo on the article Web page. Do you have the name(s) of a vendor or two that make these water jackets for conventional masonry fireplaces?
Stricter Federal government regulations and easy lawsuits against manufacturers have driven all the manufacturers of this type equipment out of the US market.
Back in the 70′s and 80′s there were many manufacturers of wood-fired hot water heaters, hydronic fireplaces, and hot water coil inserts for wood stoves. Some moved to Mexico and are selling lots of these products in Mexico and others just went out of business.
There may be one or two left, but about the only water heating wood stoves made now are the outdoor wood-fired boilers you see advertised in this magazine that pipe the hot water into the house.
Hope this helps,