I'm in the process of having my furnace replaced with a 90+%. I'll be getting quotes from three HVAC contractors shortly and want to gain a little knowledge from you guys.
My home is a two story and approximately 2,500 sq. ft. My furnace is a Goodman/Janitrol GU125-4 (125,000 BTU standing pilot). House was built in 1991. Overall, I've been satisified with the furnace performace except for the airflow to the master bedroom - it is the furthest room from the furnace. Here are my questions:
1) Does anyone know the efficiency rating of this furnace?
2) By going to a 90%, can I get by with a lower BTU furnace? If so, what is the range?
3) I'm guessing the "-4" in the model is 4 ton. Due to my airflow issue, what are the ramifications if I go to a 5 ton? Thanks!