Very similar..both 2 stage var speed and same 96.5% eff....the 986 T is top of line communicating Evolution model that requires their Evolution controller...the 926T is the Preferred model series non communicating furnace.

IMO

Thanks. I already have Ecobee thermostats so I really don't want to have to switch them out. Looks like the 926T is my best choice

I am not a fan of these lifestyle thermostats. I would want to know whether the Ecobee is compatible with and can handle the staging of heat on the 926T by demand. If not you would be just as well off going with a single stage furnace.

IMO

Thanks. I will check with Bryant and Ecobee. This if for our lake home so it's nice to turn the heat on before we head there so it's warm when we get there.

I checked the Ecobee website and they have wiring diagrams for 2-stage furnaces so it looks like they can handle them. They do not have any info for modulating furnaces so I don't think Ecobee can support this type of furnace. Ecobee also is not able to control humidity