5 ton unit in 2859sqft house Indianapolis

[jordanburch]

Hey guys I have a 2.5 ton unit right now it's wayyyyy to small. House doesn't keep cool during summer and the unit literally runs all day long during summer. Is a 5 ton unit to much? House was built in 2002.

Jordan

[Advanced Response]

Joke,,,, trolling... post....

[BNME8EZ]

Yes, no, maybe?

There is no accurate rule of thumb to predict equipment size / Sq Ft. Way to many variables to do that.

If a load calc is done and if it comes back at 5T will the duct work support it. Most duct is undersized for the equipment it is sized for so to double the size you will need to change all the duct and maybe add registers/grills.

Find a good dealer that will do a load calc (Manual J), let him do his measurements and run the numbers, then he can give you a proper size.

How long have you lived in the house? Is it the original equipment? To your knowledge did it ever work? Does it heat the house properly?

[jordanburch]

Yes, no, maybe?

There is no accurate rule of thumb to predict equipment size / Sq Ft. Way to many variables to do that.

If a load calc is done and if it comes back at 5T will the duct work support it. Most duct is undersized for the equipment it is sized for so to double the size you will need to change all the duct and maybe add registers/grills.

Find a good dealer that will do a load calc (Manual J), let him do his measurements and run the numbers, then he can give you a proper size.

How long have you lived in the house? Is it the original equipment? To your knowledge did it ever work? Does it heat the house properly?

Lived one and a half years. Equipment is original from 2002. It works fine right now. The heater is undersized as well it's 60k at 80%. The condenser is 2.5 ton totally undersized. It gets almost 100 every summer here. Holds heat well in winter we don't seem to get cold but I'm not sure how long it runs. The AC is running all summer long literally other than the night it might take a break.

[BNME8EZ]

What temp are you trying to run it at? Most systems are sized at 75 indoor temp, if you are trying to maintain 70 it will run all the time. If it catches up over night it can't be too far off.

[jordanburch]

I'm trying to run it at 72 degrees. The neighbor upgraded with what looks at 3.5 ton. Why do these websites say that I need a 5 ton almost all of them say that?

[jordanburch]

Yes it's just as funny as your post. Wasting your time posting stupid stuff online

[pecmsg]

Yes it's just as funny as your post. Wasting your time posting stupid stuff online

Hell

Go 10-Tons

[jordanburch]

Don't you actually have a real life other than to flex your tiny balls on online forums meant to help people? Or are you so miserably vendictive you like to fight people on forums because somehow it gives you meaning? Your life is truly sad.

[pecmsg]

You’re the one that said you needed larger equipment with no data to back it up.
With that attitude go to 10 Tons hell go 20 tons

[jordanburch]

Actually I was seeking advice and you said that all the websites that were from HVAC contractors said I needed 5 tons was bull shit, so yes I had data from HVAC contractors to back it up oh and you didn't even suggest what size I should go with you just said it was bull shit. So yes I'm totally lying about my sqft and my region because I'm crazy and want to deceive this forum and I desperately want to over pay for a to large until I'm so desperate to loose money and to listen to losers like you who pick fights with people who are asking for help. I'm a mechanic and help people on forums all the time but I'm not a dick like you. So get a better life u have better things to do than bother me right now.ñ oh wait you don't .. I'm sure you will reply in the same fashion you have because you have nothing better to do. Even watching TV is a better life than arguing with someone who is looking for help so go watch TV!

[pecmsg]

Without being there I can’t tell.
Give me the
Zip Code
Sq ft of the structure
Sq ft of each room
N
S
E
W
Walls
N
S
S
Windows
N
S
E
W
Doors
Insulation values
On
And
On

[beenthere]

I'm trying to run it at 72 degrees. The neighbor upgraded with what looks at 3.5 ton. Why do these websites say that I need a 5 ton almost all of them say that?

Because they size by sq ft alone basically. A member here has a 4,000 sq ft home that a 2 ton unit keeps it at set temp.

When it hits 100 outside, what temp does the inside get to?

Having to replace all of your duct work, adding twice as many of both supply registers and return registers is very expensive.

[BNME8EZ]

To do a proper load you need floor sq.ft, which should match ceiling which you need, outside wall sq ft, windows and doors, insulation values for all the above, interior heat gains from appliances, etc, and design temperatures. To add to this widow overhang/shading, roof color and material, and ventilation factors. It’s not all, but a good start. How much of that did your websites ask.

There are some guys on here that can get you in the ballpark with zip code and some other info.

[rider77]

Isn’t it going to be expensive, ripping your ductwork out to upsize all of it?

[Dad]

To the OP

Anymore bad language from you and I will release your user name and delete all posts.


Be nice or be gone even if it takes a thick skin


Thx

[Special-K]

Actually I was seeking advice and you said that all the websites that were from HVAC contractors said I needed 5 tons was bull shit, so yes I had data from HVAC contractors to back it up oh and you didn't even suggest what size I should go with you just said it was bull shit. So yes I'm totally lying about my sqft and my region because I'm crazy and want to deceive this forum and I desperately want to over pay for a to large until I'm so desperate to loose money and to listen to losers like you who pick fights with people who are asking for help. I'm a mechanic and help people on forums all the time but I'm not a dick like you. So get a better life u have better things to do than bother me right now.ñ oh wait you don't .. I'm sure you will reply in the same fashion you have because you have nothing better to do. Even watching TV is a better life than arguing with someone who is looking for help so go watch TV!

Relax guy, if you want to remain here. You're a welcome guest, but you need to behave.

How many tons do you need? Good question. It depends on a lot of things:

Desired temperature
Where you live
Which way the house faces
What color the roof is
Do you have a basement?
What type of construction
What type of windows
How much insulation


And that's just a fraction of the data needed. To get a real answer, you would need a load calculation, often called a Manual J. You see, sizing is not a guessing game, it's a scientific formula. At least if you want to do it right. Here in the south it's hot, so we might need twice the tonnage a similar house up north would need.

And then there's the question of your duct work. Is it properly sized and sealed? Many questions there.

So we could through out an answer, but it would be a bad one. We're professionals here, we don't like to guess.

We might can help if you give is the required data, but also keep in mind that we can only go so far. We are not a DIY site and we can't get into the technical stuff. But perhaps we can steer you the right way if you give us something to work with. See pecmsg's post above.

Have a great day.

[Special-K]

OOoops, Dad and I posted at the same time.

[dan sw fl]

I'm trying to run it at 72 degrees.
The neighbor upgraded with what looks at 3.5 ton.

Why do these websites say that I need a 5 ton almost all of them say that?

72'F set point IS LIKELY to increase run time by 30% to 50% over 76'F

UNDERsized so one may expect to run AT LEAST 12 hours/ day at 76'F
AND 18 - 20 Hours at 72'F
due to simultaneous equipment performance deratings for low indoor temp and High Outside temp.

2002 Built
2859 Sq Ft
2 story - 1,430 per floor ?

Wall height: 8, 9, 10

Indy

Sq Ft of Glass > 400 < 550 ?
Double Pane _ SHGC 0._ _ ? __ U Factor _0. _ _?

Duct location ?

BALL PARK Manual J can be provided --
_______________ GUESS 4 TON, 2 STAGE

[dan sw fl]

__ ATTIC TEMPERATURE ___ 120'F

q. SENSIBLE = 34,230 BTU/HR at 89'F ODT

NEED DETAILS
… MY GMAIL =racingdan11