Hi. One of my highly recommended contracters - who also at this time has the lowest bid - is trying to sell me on a 4 ton AC. Three other contracters are pushing 3ton and 3.5 ton units. My house is only 1300sq feet 3bd/2ba; new windows, R30 attic ONLY, hardwood floors 17 windows (2 east facing, 4 west facing), built in 1956. I just don't think such a big unit would be benificial based on other posts I've read here. The 4 ton contracter however, says it's better to have the extra cooling capacity and just manipulate the fan to a slower speed so that the house doesn't cool too fast.
This slower speed would PRESUMABLY reduce the short cycling of a larger unit and thus still remove moisture. The only reason I could even ponder at why this might be okay is that we live in a suburb around Los Angeles - it never really gets very humid so moisture removal is not such an issue. And after all is said and done does it cost substantially more to operate a 4 ton versus a 3.5 or 3 ton unit?
Thank you guys for help