I use a"monitor" k-1 heater 40000 btu,my space is 22x32 w/8ft ceilings,1
garage door
this is a direct vent heater.they are also made to use lp/propane gas.
my building is 2x4 construction as well insulated as possible
cost for season runs average. 80 gallons
heat is on at 46 degrees constant with time where i push to 64/66 degrees
for hours or days at a time
I'm very happy with the system


edward
pearl painting
in maine


wrote in message
...
RBM rbm2(remove wrote:

... How many BTU's do I need?

The question is "How many Btus PER HOUR do I need?" :-)

Nick