We have a 40 year old Florida home 2450 sq. ft. with large windows; also 1 acre lot with lots of big/tall oak shade trees. We currently have an outside older 3 ton Trane A/C unit (rated 10 seer) which is underpowered but with the help of a couple of upstairs window units we do ok. I think its time to upgrade/replace the Trane; what I am thinking is a 4 ton higher efficient (maybe 14 or 16) unit. My wife thinks that if we replace with another 3 ton higher efficient AND install a smaller unit for upstairs - programmable so that the bottom primarily runs during the day and the top primarily at night (upstairs is all bedrooms) we would possibly be more efficient and cooler. Obviously big up front install costs for upstairs unit but if we are willing to absorb those - is this usually the more efficient way to go? Thanks in advance - Bill
- posted
16 years ago