It's been said many times that the capacity, planning and installation is everything. The logo on the machine is a secondary consideration.

Which contractor is going the extra mile to plan your entire HVAC system. I can't overemphasize proper duct work in new construction. It's so important and so often screwed up.

The duct work must outlast multiple components. Make 100% sure it's done right.

That was my feeling going into it until the guy who sells the Trane started his pitch and got me thinking more about compressors. Back to the important side of installation and service! Thanks for getting me back on track.
PLH

I sold and serviced American Standard/ Trane equipment for 11 years and it is great equipment. Made in Tyler, Texas.

I now work for a Carrier dealer and sell and service Carrier equipment, and in 2007 I would have to say that if you have the Carrier Infinity system there are NONE that would come close to it's performance and design. That includes American Standard/Trane.

But as other's have stated it is very important to have a manuel J load performed and manuel D duct design to insure the best performance from either system you choose.