What exactly is a fresh air intake? Also, what size dehumidifier would I need?(not the whole house type, just one you sit on the floor) The living area of the the home is 2200sf.
The cheapest and easiest way (for fresh air) is to run a 6" or 7" pipe from the outside directly into the return air duct. I live in the midwest and I assume that your humidity varies greatly from ours but I had a customer that had tightened his home and developed excess humidity. I mean it was dripping like I had never seen.
I told him to try the "simple" fresh air method and I have to say it worked like a charm. Every time he sees me he can not stop talking about the difference that it has made. He's a customer for life!