Shop AC Sizing

[Fixastuff]

My building is supposed to have r21 fiber insulation but the way they put it on it is squished down so I don’t think it’s really that high. My roll up doors aren’t insulated(and don’t seal up tight at the top) I need figure that out.

 

[Sigarms]

My building is supposed to have r21 fiber insulation but the way they put it on it is squished down so I don’t think it’s really that high. My roll up doors aren’t insulated(and don’t seal up tight at the top) I need figure that out.

Question becomes the actual size of the doors, how many and expected time they are open.

If they stay open for summer and it's hot, just buy one of these

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[dieselscout80]

I may end up doing nothing but a fan for now, but we’ll see.

 

[Sigarms]

What's the price difference between a 24K and a 12K?

 

[dieselscout80]

say $1700 vs $2500.

 

[Sigarms]

say $1700 vs $2500.

Put the less expensive 18K (or 12K) wall unit 9' tall on the 20' wall in the line of sight area you use the most. I would not install it close to a wall though, but pick a side you use the most.

Keep in mind, this is NOT what I would do but more along the lines of a hail Mary to offer something.

Honestly, without insulating the building properly, particularly the ceiling area, it's an up hill battle with any type of system.

I do know for some large industrial areas, we've used high velocity systems for spot cooling for worker areas in the warehouse. You're not trying to cool the entire building, but put cooler air on work stations where people generally stay. Given the size of your building along with costs, not really an option though.

Fan option would be my first pick though given your situation.

 

[dieselscout80]

Thanks

I have the two ceiling fans and I may try adding an exhaust fan in a window and see how it goes for now.

I wanted to install a ceiling and insulate, but that maybe a down the road project.

 

[tractortroof]

I have a 30x50x14 white metal building in Florida with the bubble wrap. I don’t ac it all the time. I just threw a 5 ton package unit on it with 10’ ceiling fans.

I would not attempt to keep a building like that conditioned, only for when I’m working on something.

 

[dieselscout80]

I have a 30x50x14 white metal building in Florida with the bubble wrap. I don’t ac it all the time. I just threw a 5 ton package unit on it with 10’ ceiling fans.

I would not attempt to keep a building like that conditioned, only for when I’m working on something.

That’s kinda what I was thinking about doing.

This is our first whole summer with this garage, so we’ll see what it’s like.

 

[bigtiller]

I put a 42" fan in 3 of the 4 corners of my shed and have them all directing air counter-clockwise. It makes a really nice breeze.

It is also very well insulated and I have an undersized dehumidifier running. No heat/cooling and with keeping the doors closed, it stays comfortable year around.