Is this a screamin' deal for A/C?

[StaggeringGoat]

I don't really have a thousand bucks laying around, but I think these are normally a lot more expensive than that?
http://portland.craigslist.org/wsc/mat/3240875641.html

2 new (York) gas packs with heat and a/c, 3 phase, 208/230volt, 3 ton cooling each, never been used. ( Brand New )

$1,000.00 each

I don't know much about commercial units. What do you need inside...some kind of air handler? Or is that the complete unit that mounts on the roof? Is that something that can be DIY installed...assuming I can find a way to get it on the roof?

I have 3 phase power at the shop...and I think 3 tons would be just about right...

 

[StaggeringGoat]

Another question - does that provide heat pump heat, too? I know it has a gas burner but does the heat pump part also work in reverse? I don't currently have gas in the shop and the gas company wants $1500 to hook back up.

 

[hughfree]

Those units are not heat pumps. Straight cool with gas heat. Price wise...pretty good deal!

 

[danski0224]

First, you will need to be sure that the roof can hold the extra weight. Yeah, and I saw the remains of a building where someone "knew what they were doing". That one was torn down.

Then, you will need a roof curb for the unit and ductwork.

I'd run the serial numbers to make sure they didn't fall off the truck.

 

[StaggeringGoat]

I'd run the serial numbers to make sure they didn't fall off the truck.

That was my first thought.

So does the hot/cold air just come out of the bottom? Basically cut a hole in the roof and add ductwork? I could possibly mount it directly above a heavy steel post. (how much does that thing weigh?)

Then again, for that price, I wonder if I could make one work for my house too? (no roof mount) Mount it on top of some kind of 90 degree duct work?

 

[danski0224]

Some units are both side discharge and bottom discharge. Some are only bottom discharge.

You can probably run the model number and get the installation information on the internet, but thankfully most manufacturers are pretty good on keeping some of that info out of the free public domain.

 

[Canadian Cowboy]

Good price,if they are left over and not egg fryers those are commercial units it takes 3 phase power to operate.

CC

 

[pseudorealityx]

They're older R-22 units. The newer 2-5 ton York units have both horizontal and down discharge options on most boxes. Not sure about this one.

You will need 208V/3 phase power, and roof curb that ties into your existing roof/structure, and is flashed properly so you don't end up with a huge water leak.

As far as using it on your house... think about where you would mount it, and then figure out how you would run ductwork throughout the house. Keep in mind that this thing is going to provide ~1200 cfm, which means your main ducts are going to be something on the order of 16/14 before you put insulation on them. Rooftop units for residential use are pretty common in some places out west, like the central valley of CA. Driving from LA to Fresno, you see almost every house has one up on the roof, but they're not 3 ton units.

Here's the tech manual on a similar new York unit: http://www.upgnet.com/PdfFileRedirect/294604-ytg-g-0511.pdf

 

[StaggeringGoat]

Rooftop units for residential use are pretty common in some places out west, like the central valley of CA. Driving from LA to Fresno, you see almost every house has one up on the roof, but they're not 3 ton units.

I can just hear the HOA now...you want to put what...WHERE?!

I'd probably jump on these if it wasn't the end of cooling season. It's about time for me to start worrying about heat...

 

[MrMark]

They're older R-22 units. The newer 2-5 ton York units have both horizontal and down discharge options on most boxes. Not sure about this one.

You will need 208V/3 phase power, and roof curb that ties into your existing roof/structure, and is flashed properly so you don't end up with a huge water leak.

As far as using it on your house... think about where you would mount it, and then figure out how you would run ductwork throughout the house. Keep in mind that this thing is going to provide ~1200 cfm, which means your main ducts are going to be something on the order of 16/14 before you put insulation on them. Rooftop units for residential use are pretty common in some places out west, like the central valley of CA. Driving from LA to Fresno, you see almost every house has one up on the roof, but they're not 3 ton units.

Here's the tech manual on a similar new York unit: http://www.upgnet.com/PdfFileRedirect/294604-ytg-g-0511.pdf

On the roof top units in the Central Valley, I've noticed that and wondered why? Why is that done there? There are a few roof top units around me but that is generally because there is nowhere else to put the unit.

 

[danski0224]

I'd probably jump on these if it wasn't the end of cooling season. It's about time for me to start worrying about heat...

Uh, if you have natural gas, these have heat...