I am building a house in Charleston SC and have received the following info from our builder on options. Our house is 4000sq feet with a FROG. I was hoping to get some insight on which might be the more reasonable option and whether the dehumidifier and air filtration are things worth adding on. Budget wise the 14 and 16 seer systems are more than we have alotted in our building budget but if the long term cost savings is significant than I don't have a big problem with springing for these. At any rate, this is a bit overwhelming and if any can provide some advice I would really appreciate it!
4 ton 13 Seer Gas Pack system 1st floor & Frog w/2 zoned systems, 2.5 ton 13 seer Split Heat Pump for second floor.
3 ton 13 Seer Gas Pack system 1st floor, 2.5 ton 13 Seer Split Heat Pump second floor, 1.5 ton Split Heat Pump FROG.
3 ton 14 Seer Gas Pack system 1st flr, 2.5 ton 14 Seer Split Heat Pump 2nd flr,1.5 ton Split Heat Pump FROG
3 ton 16 Seer Gas Pack 1st floor, 2 ton 16 Seer Split Heat Pump 2nd floor, 2 ton 16 Seer Split Heat Pump FROG (10yr. parts and labor warranty) (30% more efficient than 13 Seer) (all units will have 2 stage compressor and variable speed blowers, 90% of the time 1st stage will be engaged and when demand is high 2nd stage kicks in)
a. Whole home dehumidifier (designed to allow only the required air changes per hour while managing the humidity in the home. This system will maintain 45% to 50% humidity level preventing the possibility of a mold situation)
b. Air filtration system (cleans air to 99.97% at .03 microns bacteria stage)