I am looking to add a central AC unit to my existing furnace. I have received several quotes, and have decided to purchase a Lennox system. The load calculation I had performed stated I need a 2.5 ton unit, and I live in Michigan.
My preferred contractor has given me quotes on two different systems, the AC13 and the 13ACD. The AC13 is about $200 more expensive than the 13ACD. Any one out there have a preference between the two systems?? The statistics on the Lennox website are about the same, but the AC13 has a longer compressor warranty.
I noticed both of these systems are R-22, should I ask for a quote on a 410a system, or is the R-22 sufficient? Any idea on price differences?
My current furnace only had one cold air return and that is located directly next to the furnace. Should I have an additional cold air return installed on the other end of the house? The contractor wants $260 to install the additional cold air return.