They work very well.Back in the days before infloor radiant they were very common in commercial/industrial applications with ceiling height 12' and above.Also very cheap compared to alternatives. Put in a lot of them. Given my druthers, I would put all my money into insulation and air sealing...
I will throw this out....suspended infrared tube heaters. If you save money putting 1" under the slab, then these heaters may work for you. I have one in my garage and it works well. I haven't had a problem in 16 years with it.Hot head instead of hot feet :evil: . I also used 1" foam under...
The ones I had experience with had no duct work. The fan is quite large and moves the air pretty much silently. I have no feel for pricing although if you want to pursue this avenue I would get quotes from every supplier that you can....Trane and Johnson may not be very competitive. You may have...
You should consider a "air rotation" system....very efficient and cost effective for tall open buildings. I have installed a couple...1 in an airplane hanger and 1 in a large warehouse.These systems work really well and are relatively quiet.
https://johnsonairrotation.com/...