Adding 1 10 inch return in living room. Sealing all ducts and removing distribution boxes to optimize airflow ASX160481 CAPF4860C6 AMVC81005CX Aprilaire 8466 Labor Warranty (years) (10) X Parts Warranty (years) (10) X Compressor Warranty (years) (Lifetime) X Heat Exchanger Warranty (years) (Lifetime) Bring an 8 10 and 12 inch high velocity register to put in uncomfortable living room