Replacing an old 1.5T HVAC unit upstairs that has 3/8and 5/16 Line set.
Replace with a new 1.5-ton, 14, SEER, Lennox unit (Freon 22) and a 80% Variable speed gas system, with out changing the line set. (Cheaper by 2500$) (1100 Sq. Foot upper floor)
Replace with a New 2 ton 16 SEER Lennox/Trane unit (410a) that requires addition of new line set, couple of additional supply vents, and one return vent. Expensive by 2500$
Contractor 1 recommends option 1, but willing to do option 2
Contractor 2 recommends option 2
What are your thoughts