On Nov 17, 10:06*pm, Tabby wrote:

All electric heating is 100% efficient.

No, some is more than 100% efficient. If it's a big workshop,
expensive and you can afford the capital, heat pumps make as much
sense there as elsewhere.

Otherwise, at moderate cost, a carpentry or joinery shop is best
heated by long-wavelength IR radiants, the sort with white ceramic non-
glowing elements. These are best at heating you rather than the
atmosphere. Provided that you're moderately active (hence carpentry),
this is fine.

For other tasks you might need to warm the workshop up, just so that
stuff works. I was using epoxy last night - impossible job at 5°C.
Then you need draughtproofing and insulation first. Then like you say,
everything is 100%.

Solar is work looking at. Under a grand will give you a powerful space
heating system for a big workshop. £300 - £400 for a bare-bones
systems on a double garage (half a dozen vacuum tubes and recycled
radiators).

I don't like woodstoves in amateur workshops - only if they're
commercial workshops, with someone in there all day and you run the
fire down an hour or two before leaving. At my place if I have spare
wood waste, I'd rather burn it in the house.