I have a 1100' split level house. I have had 4 differnt contractors come over. 3 out of the 4 sized it for a 2 ton unit. 1 sized it for a 11/2 ton unit. The one 11/2 unit the contractor said the coil is 2 ton or compessor is 11/2 or reversed?
Second question is how is a Heil unit (N4H3)? And do all units come with a 10 year parts , 1 year labor?