Hello All,

I live in Southern California - In Los Angeles, my house is 1800 sq ft - Single story with 8 ft ceilings - My exterior walls do not have insulation, but i do have double pane new windows and there is insulation in the attic. Currently i am getting quotes to install AC through yelp (5 star companies with numerous reviews) however, i keep getting conflicting information - 2 of the companies tell me that a 3.5 - 4 Ton AC is perfect for 1800 sq ft, while the other 3 companies are telling me that 4 tons is not enough and that i need a 5 ton!

Can someone please help??? I dont want an oversized unit, but i am also scared of investing all this money into an Air Conditioner - just to have it too hot in the summer

It gets in the mid 90's in the summer - However, there are days where it will hit 100-110

Thank you