"
I would look for a vented heater and NOT a ventless .........."
I agree, a thru the wall sealed combustion chamber vented. A friend has a ventless in his shop and I hate to go over there when he is running it.
Walt Conner
"How can you tell? I just assumed it was aluminum"
IF it is Magnesium, it will have the word cast into the top of the deck under the air cleaner or in that area. This one will be Magnesium. I have 2 excellent ones like it.
"I always hated Lawn Boys. "
Strangely a lot of repair people...