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
Thanks for any help