wrote:

I see they say they must be mounted 2.7 metres high. Is this because
the higher they are the wider area they will cover? For a patio,
that's fine, but who has a 2.7m high garage? Could I mount it lower?

If 2.7 is higher than the roof, then lower would be strongly suggested!
(unless you want warm roofing felt!)


I'm wondering if I need some frost protection in there to keep the odd
tins of pint from freezing and too keep condensation off the tools to
prevent rust. Would a tubular heater on a frost stat do, and if so is
there a formula to calculate what size heater I'd need?

The radiant heaters are good at keeping you feeling warm, but do not
heat the air in the same way as conventional heating. Surfaces in line
of sight of the heater will warm and then convect heat, but the absolute
power input may be a bit low depending on the building size and
construction. Tubular heaters may do what you want they will work best
if the building is well insulated or you are just heating a tool
cupboard. Something with active circulation is best for getting a room
up to temperature fast. I find a small wall mounted fan heater set on
low power (800W), controlled by a thermostat set at about 5 degrees C
does the trick in my (reasonably well insulated) workshop.



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/