In an attempt to get a warm shop this winter I discovered the Myson convector fans (utilising C/H water)
Anyway, using the Rad. Calc. from discountheating.co.uk establishes
13500 BTU to heat.Question is, I have the choice between 2 models. one has a MAX output of 11081 on normal setting with a "boost" of 16628 whereas the bigger one has a normal setting of 15625 with a boost of 22331 BTU
Size isn't really an issue, main concern is, would the smaller heater need to run on "boost" setting full time to maintain temp or would I be better with the bigger unit running on "normal" with the option of much higher "boost" for the really cold days.
Shop is 9m x 5m with solid floor, in between 2 other shops (one empty) with solid brick walls. Ceiling is suspended at about 2.7M
Shop front is almost North facing, so when the wind blows its incredibly cold.
I'm favouring the bigger of the units so the fan can run at a lower speed for similar output. Once up to temp though, would the bigger fan be superflous to requirement rather than pottering along maintaining a temp.
TIA
Pete