New Addition to House, Now cooling problem

I recently added a 20'X28' family room to my house. I was told that my ac unit was sufficient to cool, but during the days, 95+, it runs all day can't keep the house cool. It is a 3 ton unit. The home is only 8 years old and well insulated. Attic has insulation as well with a ridge cap vent. Attic cools down fast in the evenings after the sun goes down.
Can someone suggest a solution? I am planning on selling this home and need to get this corrected. There is a drawing of the home at www.hisservantpro.com/picts/220emile_01a.JPG.
Thanks for any help
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
1. Was your existing A/C OK before you added the family room? 2. If it did and not now, you may have to add a separate system for the room. There is a number of possibilities on what you can do. Asked your local HVAC contractor.
--
Moe Jones
HVAC Service Technician
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Sounds about right if a a/c that was designed for 1,300 square foot of load just grew to 1,900. (maybe 40%?)
GL Dan
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 16 Aug 2006 09:29:03 -0700, snipped-for-privacy@cox.net wrote:

Your link didnt work

In case you didnt notice the math, thats 560 sq. ft. you added to your home. Thats like adding a small home to your existing home. Now, lemme guess. You have LOTS of windows in there, right? Your original house and AC system were probably working ok. You've now screwed it all up. I bet you got a great deal on it though, huh? Next time do it right and stop using "thumbs" and guesses. Bubba
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Someone gave miss leading information and the short end of the job...in other terms...THEY LIED TO YOU

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.