Lennox HVAC install with Costco discount?

My current HVAC system is around 25 years old and is on its last leg. However, it's surprisingly efficient... (my electrical bill is below $200 in the summer, which isn't bad for New Orleans, LA). I'm not expecting ground breaking savings for this upgrade. I'm mainly concerned about reliability/comfort.

Option 1

• 3 Ton Lennox ACX 14.2 Single Stage + furnace + all new ducting

• $8697.04 (after Costco discount of 12%)

Option 2

• 3 Ton Lennox XC16S Two Stage + furnace + all new ducting

• $10,488.04 (after Costco discount of 17%)

New Orleans is humid year round, so humidity control of a two stage system sounds nice. The existing system is a 3.5 ton condenser with a 4 ton coil. The tech suggested downsizing to 3 tons, which I think will help even with humidity for the single stage system.

Is a two stage system (plus 16 seer vs 14 seer) worth $2000? Is the tech established and reliable? Could it add value if I sell the house in the next 5 years?

Thanks for the help.

submitted by /u/pbcar
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