I just replaced (in september) all the ductwork, vents, and plenum (piece that sits on top of the blower to distribute air to ducts) in my new house and it was $2400 for 1900 SF.

Also, we added a central AC/heat unit to our last house (in 2009) and it was $8000 for entirely new install with 1300 SF house with a 3 or 4 ton unit.

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Posted by daviddsims

West Monroe

Member since Dec 2008

587 posts

Posted on 2/15/13 at 4:38 pm to eng08

If someone walks in to give you a quote and tells you 400 or 500 sq ft per ton, please show them to the door. The contractor should provide a manual j that does a load calculation on the home. Most people think bigger is better and it could not be further from the truth when it comes to comfort. You may still find some shade tree a/c guys with some old R-22 units they are selling for reduced prices but I would not buy them. In 2010 manufacturing of R-22 units was stopped and by 2020 so will the refrigerant. Make sure you are quoted at least a 14 SEER R410-a unit. There are so many variables it is tough to give a price without seeing. Do you have closet space for the plenum and a-coil? Is it an attic mount? 80% of an air conditioning systems life is installation. Brand names are really just a preference but if it was me I would make sure to find a very reputable contractor that provides a manual j, 500 micron evacuation, and all the necessary warranty details.

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Posted by crash1211

Houma

Member since May 2008

3153 posts

Posted on 2/15/13 at 4:41 pm to eng08

Last year had all the ducts, and inside, and outside unit replaced. 16 seer, and it ran $7500, but I got the units at cost from another source.

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