I have a 9 year old 4800 sq ft home here in Atlanta GA. (there is an additional 2,400 sq ft to be finished in the basement for a total of just over 7,000) The upstairs guest bedrooms make up 1800 sq ft and is serviced by a 2 ton 80% 10 seer unit that works just fine during its minimal use.

My main living area on the first floor however is serviced by a 5 ton unit that has a bad leak on the evaporator core and rather than spend $1,500 to replace the evaporator, I am getting bids to replace the entire unit with a more efficient - current model. Please note, that my current setup only has one return box going into the unit and I am being told that a 5 ton unit should have dual return boxes hence my current system has been starving for more air hence may be why it has not done a proper job of cooling one side of my house vs. the other (my master suite is always more difficult to cool and heat vs. the kitchen and keeping room area on the other side).

Here is what has been proposed:

Trane XV95 (TUH2D120A9V5VA)

Trane XL16i (4TTX6060B)

Trane (4TVCD061) Don't know what this is

Dual return plenums

EWC S2020 Steam Air Humidifier

Dual Aprilaire AA2210 filters

Tstat 803 Thermostat

R4100 Flush Kit - propose to flush R22 7/8 copper line and reuse with new 410 freon - is this advisable?

The cost is as follows:

10,594 for the system

650 for 2 air filters

1195 for steam humidifier

165 for ductwork (dual return plenums and new supply plenum)

(1,500) dealer rebate

11,104 Total

Comments please on this system - is it configured properly? Is the cost in line?

Since I can buy the Aprilair filter boxes online for $300 /pr should I ask him to upgrade them to the Trane Cleanaire?

Is the EWC S2020 really the best humidifier on the market as he says?

Thanks for your feedback and comments.