I'm sure I've seen heat exchangers on small engine
exhausts; the idea being to recover the generator's
waste heat while running things in the house.

It may have been on a RV generator, but I don't recall.
Does this ring a bell with anyone here?



--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433