I had a contractor come to the house. I have an old house built in 1974. The ductwork is not the top design. It's a small house roughly 1400 sq ft. One of the major problem is the upstairs is not as cool as the down. It's almost like no air is getting upstairs. You can feel the air comming out of the vents upstairs but it's not as forcefull as down.
The A/C is relatively new it's a Lennox HS26-261-1P with a matching evaporator coil (I believe this is 1.5 ton). The furnace is however original with the house and needs changing.
A person that came to the house was telling me when putting in a new furnace with a bigger blower motor will solve a lot of the upstairs heating/cooling issues. However, I dont' know that is a good idea. Isn't the rule of thumb 400CFM for ever ton of cooling. Is it ok to go beyond this?????