How much is it to install a furnace heat exchanger?

Every situation is different because every installation is different.

Some people have the furnace located in the closet that fit the exact size of the furnace most important the height the new high efficient coil are in most cases bigger in size sheet metal work is necessary to fit the new coil .

also if you change refrigeration to 410 you going to need to flash a replace line set

Labor is about 150 an hour plus the part probably you're looking about 2 4 hours

call for price in nj

http://www.njaircond.com