Upgrading central air

Repair help for the do-it-yourselfer.
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Moderators: Greg, Mark, mhrAJ333, JD

Posts: 55
Joined: Thu Feb 06, 2014 8:24 pm

Sun Jul 03, 2016 4:30 pm

Anybody have any thoughts, advice on upgrading central air.

My 10 year old unit is running fine but aging.
It's a 4 ton Goldman unit.

I'm thinking about upgrading to something with higher seers.

I can do all the installation myself and have an uncle that has an epa license for the freon.

From my looking I can get a 5 ton 18 seer unit for around 2000.

I don't know if the tiny ducts will be able to handle it.

User avatar
Posts: 5673
Joined: Wed Feb 28, 2007 8:01 pm
Location: Weedsport, NY

Mon Jul 04, 2016 7:53 am

Well since the traditional mobile home ducts are one step from formed tin foil, now would be a great time to upgrade everything.

"If I can't fix it, I can screw it up so bad no one else can either."

Posts: 55
Joined: Thu Feb 06, 2014 8:24 pm

Mon Jul 04, 2016 10:28 am

I was afraid of that.
I really don't want to have to cut into the underbelly and fool with all that. But you are right

Posts: 80
Joined: Tue Oct 20, 2015 11:02 pm

Tue Jul 05, 2016 12:50 am

Good price on the equipment.
You must live in a hot area if wanting SEER upgrade.
Most times the size/ton is based on sq ft of house, R value of walls and type of windows.
5 ton would tell me your house must be over 2500 sq ft and in a hot climate.
Is it a Energy Star home?
Most I see is 4 ton and that equates to changing blower in furnace and house of 2000 and up sq ft.
If your house has a Data plate/Compliance Certificate glued up in a cabinet or behind a door it will state the max BTU duct system was designed for.
I am assuming you live in Louisiana??

Posts: 383
Joined: Mon Oct 25, 2010 9:53 pm
Location: Steuben County, NY

Fri Jul 08, 2016 8:29 pm

I am in New York, and FWIW, my Miller package unit A/C is 28 years old, with absolutely no issues.

Posts: 32
Joined: Sun Oct 18, 2009 7:49 pm
Location: Danbury Conn.

Tue Sep 27, 2016 7:45 pm

Wish I still had my Miller. I have a Carrier that has gone thru 3 motors in 8 yrs. They Carrier keep claiming its my electrical service. Terrible to deal with.