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Replacing entire AC system

Posted on 2/2/16 at 7:36 am
Posted by PhiTiger1764
Lurker since Aug 2003
Member since Oct 2009
13932 posts
Posted on 2/2/16 at 7:36 am
Ran the AC for first time in a few months yesterday and it took hours to get from 76 to 72. My 3 ton unit has been leaking freon for a while now. It's 12 years old and house is 1600 sqft. Looking at maybe upgrading to a 3.5 or 4 ton unit because even after refilling the freon, the unit just doesn't really cool the house down like it should.

How much am I looking at to replace everything? Any recommendations in the Baton Rouge area?
Posted by tke857
Member since Jan 2012
12195 posts
Posted on 2/2/16 at 7:38 am to
probably around 7-9k for a above avg but not great system. 10-12 for a good system
Posted by jdd48
Baton Rouge
Member since Jan 2012
22127 posts
Posted on 2/2/16 at 7:38 am to
Probably between $4500 and $5500, depending on the installer.
Posted by Salmon
On the trails
Member since Feb 2008
83630 posts
Posted on 2/2/16 at 7:39 am to
quote:

1600 sqft.


quote:

3.5 or 4 ton unit


you don't need that big of a unit

quote:

How much am I looking at to replace everything?


about $7k for everything
Posted by saint tiger225
San Diego
Member since Jan 2011
37152 posts
Posted on 2/2/16 at 7:40 am to
Obligatory tree fiddy.

I haven't had to replace mine (yet) but my mom did a couple of years ago and I believe it cost her around $5000. Sorry, no specifics on what brand she went with and what size. Just wanted to let you know they're fairly expensive.
This post was edited on 2/2/16 at 7:41 am
Posted by MorbidTheClown
Baton Rouge
Member since Jan 2015
66364 posts
Posted on 2/2/16 at 7:41 am to
quote:

4 ton unit


cost me $5k just last year.
Posted by Old Sarge
Dean of Admissions, LSU
Member since Jan 2012
55453 posts
Posted on 2/2/16 at 7:42 am to
At 12 years old? I'd just drop a new compressor unit outside for 1,200. Then if you still feel you need some additional ac, add a smaller unit or do a nice little wall unit. 1,600 feet isn't that much.
Posted by soccerfüt
Location: A Series of Tubes
Member since May 2013
65895 posts
Posted on 2/2/16 at 7:43 am to
How long do you plan to live in the house?

If more than a couple more years invest in the best SEER rating you can afford.

You'll recoup the benefits in lower utility costs and being more comfortable over that time frame.

Posted by Enadious
formerly B5Lurker City of Central
Member since Aug 2004
17695 posts
Posted on 2/2/16 at 7:44 am to
Try RamAir.
Posted by MorbidTheClown
Baton Rouge
Member since Jan 2015
66364 posts
Posted on 2/2/16 at 7:44 am to
Call this guy..

Glaze Heating and Air
Posted by PearlJam
NotBeardEaves
Member since Aug 2014
13908 posts
Posted on 2/2/16 at 7:46 am to
quote:

1600 sqft. Looking at maybe upgrading to a 3.5 or 4 ton unit
Probably a dumb idea. Tonnage shouldn't be based only on square footage, but that is a lot of tonnage for such a small area. Oversized is just as bad as undersized.
Posted by absolute692
US of A, MFer
Member since Feb 2007
3965 posts
Posted on 2/2/16 at 7:47 am to
quote:

Any recommendations in the Baton Rouge area?


We have used Marnix for years.

Chip mentioned that because our old units are ran off R-22 (which is being phased out), he would also have to clean all the lines before installing the new units. Think that will add a few hundred dollars on top of the cost of replacing and installing.

Might be something to think about if you're current system uses R-22.
Posted by windshieldman
Member since Nov 2012
12818 posts
Posted on 2/2/16 at 8:16 am to
12 years isn't really that old for an AC unit.
Posted by graychef
Member since Jun 2008
28351 posts
Posted on 2/2/16 at 8:31 am to
(no message)
This post was edited on 3/8/21 at 12:36 pm
Posted by doubleb
Baton Rouge
Member since Aug 2006
36203 posts
Posted on 2/2/16 at 8:36 am to
quote:

It's 12 years old and house is 1600 sqft. Looking at maybe upgrading to a 3.5 or 4 ton unit because even after refilling the freon, the unit just doesn't really cool the house down like it should.


I don't know how anyone can tell you what size unit you need without knowing how old your house is, is it on a slab on grade, how is it insulated, how many windows do you have, where are the windows, etc.

There are a lot of variables and just comparing square footages isn't the best way to size AC units.

Your three ton seems small, but it may be the unit is old, and broken. But then as someone pointed out, a unit that is way too big and satisfies the conditions quickly won't work because it won't run long enough to wring the moisture out of the air.

find a dealer who you can trust to run a proper analysis. You might need better insulation, better ductwork (flex is bad), etc.

If you plan on staying put for 5 years or so, invest in better equipment. You will get the extra money back in utility savings.
This post was edited on 2/2/16 at 8:43 am
Posted by GaryMyMan
Shreveport
Member since May 2007
13498 posts
Posted on 2/2/16 at 10:13 am to
Reading the prices quoted in this thread is parallel to my experience buying a new inside/outside unit a month ago: prices are all over the map, sometimes for the same unit.

I ended up with a Rheem 4 ton system (my house is pushing 2k sq ft) and new duct work for $3972 with a 10 year warranty.
This post was edited on 2/2/16 at 10:14 am
Posted by ForeverLSU02
Albany
Member since Jun 2007
52162 posts
Posted on 3/14/16 at 11:01 am to
I have a similar sized house and we paid around $5k 3 years ago to upgrade to a 4 ton from a 3 ton.
Posted by GreenTrout
Toledo Bend
Member since Jul 2013
1010 posts
Posted on 3/14/16 at 11:03 am to
Call Air Handlers out of Denham. They'll treat you right.
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