My 40X80 car studio (pole barn)

has insulated walls and ceiling at 14', It has a gas fired forced air heater and A/C unit that hangs on the outside of the building. All the air comes out of a single 1x3 vent and it takes a really long time to bring the temp up, there are also 4 ceiling mounted fans to circulate the air I have used several red top Propane radient heaters to warm up spots or cars. I gave up and started looking for another solution to heating the studio
A couple of important considerations for us all, One be aware of CO poisoning when using any "Ventless" type unit be it Kerosene, Propane or even the new "Ventless gas heaters. They all burn hydrocarbons and CO is a byproduct, so I behoove(nice word, eh) all to install a CO monitor to alert you of any dangerous build up( meaning deadly!)
Secondly these types of units will also produce other by products that will be corrosive vapors which will attack your car and tools. ( Not good at all!)
So what I have ordered are the natural gas Radiant Tube heaters that are vented and mount high on the wall and use radient energywhich does not heat the air, but everything else like the concrete, the cars and the tools. They are purported to be 50-70% more effeicent than other types and are thermoststically controlled, two stage for rapid rise and maintain levels. The cost of a 30' unit and a 40' unit for the barn is about $2200 plus installation, which will probably be another est $400.
The best part, no CO and no corrosive vapors to settle on the toys, and warm concrete, which sholud also take care of any condensation issues. I intend to still use the ceiling fans. By heating all the solids and not the airas before, when you open the garage door, you don't lose all the "heated air"
I'll post some pix after the install.
BTW these are available in all sizes so even if you don't have a barn, they would work well in any size garage
