Hi, I have a rooftop Condenser from Carrier that was installed in 1997. I have a First Company Air Handler in the hallway ceiling. I have a Home Warranty from First American and the Condenser stopped working on August 6. First American says intends to replace the Condenser with a Lennox product but they say they cant locate a new Air Handler. System has been down for 9 weeks. What would you recommend? Thanks in advance for any tips. Best Regards, Dave