"Mak Wilson" wrote in message
oups.com...
Regarding heavy dryer use, that's all the more reason I'd like to make
use of all that extra heat being pumped out and wasted.

No fee lunch.

I has a similar device years ago. My oil burner service man showed me why
it was not a good idea when he pulled out all the accumulated lint in the
intake. The burner was running rich and wasting oil.