In the DC area. Have an 18 year old furnace (carrier) and a 15 year old ac unit (carrier) and am looking to upgrade.
3rd floor of house is year old addition and has its own zone. Main floor of house is 1100 sq feet (w/ 7 vents) and basement is half finished (1 vent) and am considering an Amana split system (just for the bottom 2 floors). Is this wise or are they less reliable than Trane, Carrier, etc? Also, looking to move pretty fast...though I am not sure the contractor has really done the necessary sizing work...he took measurements but don't believe he took any insulation readings. And finally, buy SEER 14 and get a variable speed...are these must haves?