Well, now I can say that my workshop temperature is whatever I want it
to be.

I installed the ceiling mounted Dayton G73 (actually manufactured by
Marley Products as their UH5xx series) and my shop is very comfortable
in the winter. It's a relatively quiet unit and the design appears to
be ideal for my intended purpose. Easily heats up my 13x24 shop raising
temps by 25 degrees or so in a matter of a quarter hour or so. Not bad.

Summer's aren't that bad as I have three good sized windows that, in
conjunction with a nice 14" through wall ventilation fan that I
scavenged from the kitchen area of an old children's home that was being
razed years ago. I can get plenty of breeze through there.

Interesting though. When SWMBO came out to see the new heater her
comment was "Nice! When will you put the A/C unit it?" I thought she
was poking me a bit but, no, she was serious. Said "You might just as
well do it up right." Gotta love her!