I have a small workshop at the end of our free-standing garage (about 3m
square, single=thickness block walls, plasterboarded/insulated ceiling,
solid uninsulated floor, efficiently draught-proofed and dry).

I want to put a heater in there and would be grateful for thoughts as to
what type to get, especially as there are conflicting requirements:

(a) warm the place up quickly in order to do swift jobs at short notice
(eg use a 3kW fan heater?)

(b) maintain it at a comfortable ambient working temperature for a
reasonable duration of working time (eg 500W oil-filled radiator?)

Is there something that would be a compromise? To be honest scenario
(a) is the majority of my use these days. Not sure I want a fan heater
in there though due to clogging with dust, and air moving around eg if
painting.

What about halogen heaters? Don't know much about them - would they fit
the bill? Maybe I just need two heaters

Thanks
--
David