Here's one way.
http://hvaccomputer.com/talkref.asp
While waiting for a dream job, I'm doing service work on my own and I notice homes that are only 5 years old have undersized units? Can anyone tell me what size an HVAC unit should be or how to size a unit for homes? I had a service call for a condensing unit not running and I noticed it was an obviously undersized unit for the home. It was a 3100sf home with a 3 ton or 3 1/2 ton condensing unit. Could anyone tell me what size unit that home should have? I'm thinking it should at least have twice what it currently have. The customer said it takes a long time to cool the entire house.
Here's one way.
http://hvaccomputer.com/talkref.asp
Guess that means you think a 4000 sq ft home should have more then 2 tons of A/C.
Sq ft alone. Does not indicate what size A/C a house needs.
Use the posted link. And you will be able to learn how to size.
Next. An under sized duct system. Will make a properly, and an over sized A/C take long to cool the house. A/C is not suppose to be a quick process. Since in most areas. Dehumidification is an important part of the cooling process.
And you're a service tech?
Hey BT, why not tell this guy about applying for professional status.
He's got the post count. Seems like he's trying to learn something.
What. You couldn't copy and paste from one of my post with it in.
OP:
You have the post count, apply for Pro Membership.
Use this link and Apply for Pro Membership
Once accepted, you have access to the pro tech forums. Where you can ask and get answers to technical questions.
Plus, you also have access to the Pro Educational Forums.
All of it is free.
We all jump the gun once in a while.
Stress relief.
I slip once in a while.
Try not to though.
It's tough being nice in a mean world. You have done a good job today.
I'm sure they wouldn't let just anyone be a Moderator.
They will for money!
http://hvac-talk.com/vbb/showthread.php?t=399892
ROFL.
It serves 2 good things.
1. The charity that receives the money.
2. Someone (the winner) gets to see all sorts of new tabs on his/her screen. And hope they don't click the wrong one.
Who ever wins, will have plenty of help. And Admin can undo almost anything we do.
Its more of a democaracy then people might thing.
Robo won the first mod contest however many years ago it was.
Oh yeah, I forgot about that auction thing.
I wonder how much authority they will actually allow?
We vote on a lot of things/actions.
We don't ban someone just because we don't like their opinion.
As far as I know. The winner will have full mod access.
A couple of good ways to size a home......
One is two purchase the three card board cutouts from Don, then go to the curb in front of the house and hold them up until the house fits into one of the three cards labeled 3, 4, and 5 tons.
The other time tested method is to go across the street, between 30 and 40 feet, hold up three fingers, then four. then your hole hand if need be. the point is if three fingers cover up the front door it is a three ton and so on.
If common sense is so common how come so few of us have it!