I would like to see the model numbers of the AmStd quote both condenser and air handler.

Since you are in Florida and apparently are being quoted only AC condensers with heat strip rather than HP, I would want at least a two stg heat strip. Both Trane and AmStd offer a 7/12 and 10/15 KW heat strip.

What is your average winter low for your location? Any other source of
heat?

Trane and AmStd HVAC hold up better and last longer in a harsh coastal environment.

Post back.

IMO

Thanks for the relpy - I will try to get the model numbers for the AmStd. I up-loaded the avg temps for the town, max cold ever recorded was 23 degrees for 2 days. Punta Gorda is below the sub-tropical line in FL. There are no other heat sources. I asked all the contractors (5) about heat pumps and not one recommeded it for a sub-tropical region.

I wonder why not a heat pump. Maybe the heating is only $50 a year with heat strips.

I would definitely go Trane and make sure you have their coastal add-on for the warranty.

Does Trane/American Standard using an aluminum evaporative coil help in the coastal enviroment? I believe the Lennox is cooper. I guess with a full ten year parts/labor warranty it may not matter to much.

Also the Lennox can be equiped with the Even Heater - a stage heating strip, and includes the icomfort thermostat.

The American Standard Part Numbers are:

Condensing Unit: Gold XI SEER 16 Model 4A7A5061E
Air Handler: Platinum XV Multi-Speed Model TAM7A0C60H51

Thank you for all the help.

The American Standard Part Numbers are:

Condensing Unit: Gold XI SEER 16 Model 4A7A5061E
Air Handler: Platinum XV Multi-Speed Model TAM7A0C60H51

Thank you for all the help.

Jojo

Nothing wrong at all with the AS quote.

I believe this condenser is in fact 2 stage. You should verify with your dealer.

As mentioned, I suggest three things.

1. A two stage heat strip
2. At the minimum Trane 803 or HW 8321 thermostat. The HW VP IAQ with DOD would be the best for humidity control.
3. A whole house pleated media filter cabinet.

IMO