I live in the San Francisco Bay Area so the climate is relatively mild. Mostly winter temperatures are in the mid 30s to mid 40s at night and high 40s to low 60s during the day.
I am choosing between a Carrier Infinity ICS model 58MVC080F-1-14 (3 stage) and a Rheem Prestige modulating furnace model RGGD07NMCKS. I will be running the fan to filter the air 24 hours per day. The Carrier will have a Lenox HC-16 media filter and the Rheem a Honeywell Model F300E1035 – 200 CFM electronic filter. The cost is about the same and assuming there is no difference between the contractors, is there a reason to choose one system over the other for my application?
My duct system will have a 1200 CFM capacity (new system). The Carrier has a 1220 CFM output on high heat. Could this cause a noise problem at the registers? There are 8 registers.
The Carrier apparently has 3 speed choices on constant fan, while the Rheem has 1. Is this a real advantage in my application? Does the Carrier use less electricity?