Is there a mechanical difference between the Rheem, York, and Coleman modulating furnaces? My thoughts are that York and Coleman are the same equipment but Rheem is a different design but I'm not sure.
Should a modulating furnaces be matched with a variable speed blower? The coleman comes with either a VS or constant speed blower. Wouldn't I be better off with a two-stage variable configuration over a modulating constant speed?
(Located in Philadelphia, PA). Not sure why they even offer a modulating with constant speed?
The installer says that modulating is the best (compared with 2 stage), but is it a more complicated system and therefore more likely to have problems?