After talking to two other air conditioning companies and feeling confused and pressured to spend a lot of money on a new system - I finally talked to the experts at Sean McCutcheon's. No smoke and mirrors here, and they don't try to sell you something you don't need.

I was very impressed with them, and actually did end up buying a high efficiency unit because they helped me understand what exactly what I needed. Now I will not have to worry about the AC going out in the middle of a hot summer night, and I have much lower electric bills to look forward to.