Choosing A/C systems

[robinway]

Due to water leak, our coil needs to be replaced. We were given option 1&2 by one vendor and option 3 by another vendor:
1) new coil
2) new coil Bryant CNPVP4821ATA and new A/C Bryant 123ANA048000 for $ more
3) Carrier 58CVA090-16 2 stage variable speed furnace, Carrier 24ANA148A003 2 stage 21 SEER a/c, Carrier C60 coil and Carrier infinity control for yet another $ less $1k rebate and $1.5k tax credit
We are in the suburb of Washington DC in a 7 year old house. This is for the ground floor and basement which are 2500 sqft each. We went with option 2 configuration when the same thing happened to our upper level unit in May but thought we like your advices this 2nd time around.
Thank you

[beenthere]

Get a quote on a dual fuel, instead of just A/C.

[robinway]

We were told in order to qualify for the tax credit, we need to replace the furnace however, even though our A/C is builder grade with only 5yrs guaranty, our gas furnace is top of the line with 20yrs guaranty and does not need replacing. Is this true we need to replace the entire HVAC system (furnace, A/C, coil, control) in order to qualify for the credit? Does the furnace cost more than the tax credit? Thank you

[t527ed]

most a/c units especially the larger size units need a v drive furnace blower to qualify for the $1500 from Obama.:rules: