I would size it based on the Heat Load performed.
Originally Posted by ironpit
Load cacl isn't going to help my pressures. Fairly mild winters around patoka lake. They are hard from time to time. We commonly use 2 1/2 or 3 ton for this type of home. Only they have more supplies.
The heat isn't my problem. The a/h came with the home.
I'm still dealing with a 4 ton blower and 6 supplies going on a 2 1/2 or 3 ton ac.
I was hired for a/c only.
Without a load calc; how would you know what "pressures" you even need?
Thank you for the friendly advice. LOAD calcs DO NOT answer all questions.
LOAD CALCS are not cookie cutter annswers. You have to see the bigger picture. I don't have time to explain all of the details.
I think the guys have a handle on the scenario.
I have six vents for a 4 ton blower with 5 x 15 duct. We are going to have pressure problems as we are not allowed to increase circulation..
We are going to have a heat transfer problem. Last time I checked load calcs had something to do with ductwork.
But that is just me. 4 tons is way too big to cool this house.
But I guess, really, I was just frustrated and wanted to share my feelings, with the guys. I really didn't want their advice.
You can't produced an answer without seeing the whole "picture", via a Load Calc.
checked them. Thank you. The home owner is not open to new vents in her new floors.
No vents in three rooms, including the laundry ion the north end.
The factory should have done this right. This lady doesn't want the belly of her house cut open, to run new duct in a house that was supposed to be done right in the first place. The bathroom, dining room and laundry have no vents.
This is one of those I can't believe it jobs.
Produce a Heat Load Calc and show the customer. Doesn't the IMC require it? If you do it your way; you're just guessing. Any way you wouldn't have any proof of evidence why your installs would be right without a Qualified document (Load Calc)!