Single-Stage, Two-Stage and Modulating Furnaces

[@casperaudi7476]

Old guy was spot on 👍👍

[@danielkobylarz-lv8re]

Roger......what determines which speed taps are used on the 2 stage furnace?

[@the-bu3lb]

if u have a 2 stage installed from the start why would u have a single in its replacement makes no sense correct expecialy if you added an addition within then 24 yrs right

[@fireiceheatingandaircondit4363]

Single stage is less expensive. That is why some choose to do so.

[@znrctrnn]

Maybe living in an area with very low heating needs.