Small commercial building exhaust fan help !

[spoolgarage]

Hey guys i have a 2100 sf small repair shop my techs and I are melting during the summer. I’ve been told to install a couple vents to bring down the temperature. But I’m confused on what to get. 2100 sf flat roof single floor building. Any experience guys ? Any advice is appreciated!

 

[Marctrees]

https://www.garagejournal.com/forum/showthread.php?t=363857

And portable fans.

Marc

 

[Jim greengo]

What's the building made out of ,is it your building or are you renting it?

 

[spoolgarage]

Brick building I own it so i can do whatever.

 

[Marctrees]

Certainly some vents on roof... I dunno what is done on flat ones.

Possibly also intakes depending on usage and heat build up when closed.

At the very least open doors to allow intake.

Marc

 

[BillK]

Brick building I own it so i can do whatever.

Do yourself a favor and put in AC. Yes the initial hit will hurt some but it should be an easy install with the unit on the roof and the air handler right below it inside. My unit it 1800 SQ ft and a 5 ton unit does a fine job keeping it cool. It adds about $150 a month to the electric bill in the summer but cannot even imagine not having it. Your productivity will triple if not more. You can probably up your hourly rate a couple of bucks and easily pay for it.

 

[Marctrees]

Already insulated ?

Marc

 

[Bruce Amacker]

Do yourself a favor and put in AC. My unit it 1800 SQ ft and a 5 ton unit does a fine job keeping it cool.

+1 Here, I have a 1800sf shop and put in two 24KBTU 220v window units cut through the block walls. Couldn't live without them now. I have less than $500 total invested, they're both GE and one's still under warranty.

Your productivity and technician retention will easily pay for the upgrade.

 

[Marctrees]

Just FYI, current price for "24k window" AC is approxx $650.

https://www.amazon.com/dp/B07BMZXVKZ/?tag=atomicindus08-20

Got a 18k a month ago same model line as link for $599 + tax delivered.

Marc

 

[rodder98]

To make your installation simple and easy, why not install a couple of exhaust fans in a wall or window. That way, you won't have to have to cut openings in the roof, and maybe cause a roof leak.
If you exhaust out about 2000 cfm, then you will need openings on the other side of the building to let in 2000 cfm. That amount of air flow will make a real difference in your building. And, if you install a few ceiling fans, you will make it even better for you.

 

[Marctrees]

ya, up high on the wall is less trouble than roof penetration.

W flat roof, might as well go in wall.

If you go that route, be aware the J&D is a good company and I found cheapest to buy from Global as my link sez.

Marc

 

[spoolgarage]

We have a 220 unit installed but with the bay door open it’s pretty pointless. We have to have the door open due to the way we are situated. One Bay door for the whole building