My bet would be neither. Have spent another month compiling furnace review numbers from all over the internet. Again. Reading what HVAC experts say. All of it with a grain of salt, of course. We've never had a Trane - here's what I read: the Trane models for homes (as opposed to the huge models for industry/hospitals) are not really "tranes" but they market them as such. You're buying a low-cost-built model for price of the name. The mark-up doesn't mean it is better - and it does not seem to be better.
But the YORK??? Run, run, run, run screaming from the york. It doesn't matter WHO your installer is. Well, yes it does: if an HVAC company comes out and tries to sell you on a YORK, they are not a company I'd do business with.
York: First, the company didn't install the official York thermostat, because "they never work right". The one they installed didn't either, and we had it replaced about 5 times the first few months. Then there was the water drain problem, as discussed in another posting by a writer who had a Trane. Same problem with the York. You want to know why people in reviews talk about "water all over the floor", "water flooded the carpet", etc? This is why...... In the first installation, the water pipe went under the house into the unheated crawl space, where it was supposed to go into the sump pump, but of course it didn't.....filled the crawl space with water in one area, we got mildew problems......ended up having to have the crawl space encapsulated, mildew treatment, etc. After about a dozen calls, all of which involved different problems with the York - not just the water - the installers also moved the drain line, putting (I kid you not!) plastic hosing up the wall of the laundry/furnace room, across the ceiling, and down into the laundry tub. Nice.
But that's not the worst of it. The first year, we had the crew out every week, sometimes every day. They practically lived here. We lived with space heaters. Then, thankfully, good weather came. On the few cold days in spring that first year, we called for repairs each time, because the thing never worked. never once that first year did it go on after a period of being off for a day or two. After that first year, it needed repairs about 5 times a year, during cold weather.Some years, more repairs. Every time, no heat.
They had "sold" us, in the first place, on the wonderful TRANE air filter that worked with the York Affinity. We bought that, plus the humidifier. NEITHER OF THESE THINGS EVER WORKED. NOT EVER. In fact, this furnace, when it works, spews dust out even after the ducts have been cleaned. And the humidity level when the thing works gets so low, we had to buy humidifiers (after the thousand extra for this broken piece of garbage from Trane) to put all over the house, and distilled water to go in them.
The company had guaranteed some of the labor/service calls. After so many visits, they started saying they couldn't do anymore for us. Started charging us. We had so many things replaced i can't even list them all - most things were replaced more than once, and there was still RUST all over the thing by the end of the first year.
Eventually, after 2+ years of fighting, after winters of freezing and space heaters - after we had spent thousands more than a "normal" furnace in the first place, plus thousands on constant repairs, WE forced york to send one of their people out. And he ok'd a new main board for the piece of crap. Did that stop the problems? of course not. For a few months during the winter, the thing worked, then started breaking again, with different problems every time.
Does it work now? No. Right now, it absolutely doesn't work - this time, it's the gas valve, which is not a "normal" gas valve, supposedly. I looked up wholesale price, and it's much more expensive than others,.........labor, who knows. The thing is, of course, rusted out like the entire rest of the furnace. At 6 years old.
We've never had a cold day when we thought we'd have heat - and mostly, we didn't. And we're having to get out to get distilled water to fill up the 3 room humidifiers that take up ugly space in the house. We've not been comfortable in our own home now for 6 years, since getting this thing. We can't leave for more than a few hours, depending on the temperature, because both the cats and the pipes could freeze when the York stops working (and it WILL). We haven't had a winter vacation since we bought it.
It has been limping along, every season it won't turn on when it's needed. Then we pay hundreds of dollars for the latest repairs, and it works for a few days or a week, of sometimes, even a month....there is no pattern. It goes out when the temp is 50, or -10, isn't predictable.
It's been 6 years now and when someone mentions "york" I have to do breathing exercises to tamp down the reaction.
We're now taking bids again. We've given up, it's clear the thing is never going to work. And it was never meant to work.