Mitigation moisture from Vent-Free NG Heater

[atvkid4eva]

I purchased a home this year with a 30x40 detached shop. It has two overhead vent-free gas heaters in it. While they do a good job heating the building, now that it’s winter time I’m noticing how much moisture they put into the air. I plan to swap them to a vented tube heater in the spring/summer, but in the meantime is there anything I cab do to mitigate this moisture from accumulation on the walls etc? Will a dehumidifier make a difference or is the building to big? it has 14ft ceilings that are drywall. Any other suggestions to get me through the next few months?

 

[Showkey]

Is it insulated?
Is it heated full or part time?

 

[D45]

what kind of vent free?

Radiant? Infared?

 

[atvkid4eva]

Is it insulated?
Is it heated full or part time?

what kind of vent free?

Radiant? Infared?

Right now I only heat it when I am working in the shop, this is mainly because I am worried about the moisture issue if I were to keep the barn heat 24/7 in the winter. I will heat it full time once I get the vented tube heater. The walls are fully insulated with R13; the attic of the barn has no insulation. They are Dayton radiant heaters.

 

[atvkid4eva]

Also, the humidity instantly drops to low if I just leave one of the overhead doors slightly cracked while the heat is on...

 

[Showkey]

Also, the humidity instantly drops to low if I just leave one of the overhead doors slightly cracked while the heat is on...

Do that ^^^^^^^^until you get insulation and the vented heater.

Especially heating full time with no ceiling insulation.........your next problem will ice dams and roof leaks.

 

[Shiftless]

Yes, leave the door open a bit. And make sure you have a working carbon monoxide detector there.

 

[atvkid4eva]

Thanks guys, what would you recommend for insulation for the ceiling?