Eden pure heaters?
Save yourself money now and long term and get this simple propane unit:
. It does create a very minimal amount of exhaust which is clear and clean but is co2 and co and h2o.
Electric heat is not efficient in cost compared to propane. BTU vs. $
My opinion :)
First that is an unvented open flame and can be VERY dangerous in a shop with stuff like fuel vapors, paint etc floating around
When I "was in heating" you had to have any combustion burner (I believe) 18" off the floor when installed in a garage. This may be more stringent in some locales and may have been upgraded since I was in this work
"Minimal exhaust." Propane does NOT create "minimal exhaust." While a PROPERLY working combustion appliance whether LP, gas, etc does not produce CO, it produces OTHER products which really aren't very good for you. Ventilation is important, and these types of heaters were NEVER designed for use in a closed area.
Also, these unvented heaters produce one HELL of a lot of water vapor, which when the shop cools back down, will condense all over everything cool.
Unvented appliances are illegal for use as room heaters in most locales, and for good reason.
Efficiency. Don't confuse "efficiency" with "cost of operation." This has to be figured as to the actuall usable BTU's output into the room, versus cost per unit of whatever, whether pounds of coal, gallons of oil, or kilowatts per orange juice.
All I'm saying is "BE AWARE" of what it is that you are doing, here.