I'm getting my furnace replaced and have some questions. How important
is it for the contractor to be NATE or NADCA certified? The more
expensive, big places really push these certifications. Or is this
more of a sales pitch than anything?

I have 3 choices:

Bryant Plus 90t
5 year parts/labor warranty
humidifier
media filter
duct cleaning (I need it)
very well established company with all the fancy certifications and
guarantees
permits
$4360

Bryant Plus 90t
5 year parts/2 year labor warranty
humidifier
media filter
duct cleaning still to be added to price, probably $300-400 more
very well established company with all the fancy certifications and
guarantees
permits
$3474 (plus duct cleaning)

Rheem RGRK
10 year parts/labor
humidifier
media filter
duct cleaning
smaller company, in business for over 15 years, owner seems very
competent
permits
$3299


Is there anything good/bad about either furnace? Comments? I know the
bigger places might offer more piece of mind, but the price seems
pretty steep.