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One would be a true Lennox OEM coil (CX34), and the other likely an ADP model (ADP is a Lennox International company, hence the somewhat ambiguous wording in the estimates). The ADP coils tend to...

People sometimes label the XB13 and XB14 as such, but the truth is they are mechanically equivalent to the XR13 and XR15 with a slightly different cabinet and less sound deadening features. Not bad...

I too like the XR16 system to get 2-stage cooling and a variable speed furnace, but my main concern as well is the sizing (equipment and ductwork). So before you proceed with installing either system...

Yes it certainly is. A Manual J needs to be done, but sounds more like a 3 ton situation to me (again just a guess until a load calculation is done). 2-stage isn't a reason to oversize. Sorry you are...

If your load did come out to 3.5 tons, a 4 ton XL20i would be no problem if the ductwork could support a 4 ton system. Considering your location the somewhat higher heating capacity would be...

You might be surprised that it is likely the opposite would be true. So what's the alternative? Buying an oversized 2-stage furnace that effectively acts as a (less efficient) single stage furnace by...

I've noticed that it isn't uncommon to see 5-8 deg superheat when dehumidifying at 320 cfm/ton with the Hyperion (the TAM8 gives you a superheat reading). Of course under normal scenarios and load...

Thanks.

As others have said, I think the original poster, despite his competency, is simply dealing with a misapplication of equipment that will never work right (or be reliable). To fix the issue...

I don't believe that is true about Charge Assist using a TAM8. It has worked many times before. Not buying that it will automatically "overcharge" systems using the TAM8 air handler when done...

Can you post the model number of the condenser as well? I think you mentioned once it was a Goodman/Amana SSX14, and if so then it has high and low pressure switches. Bigger concern is that system...

Doubt you need 20 kW of strip heat (A/S estimate).

Good point. Can't necessarily assume an all-Infinity system. All communicating components will automatically be identified and many parameters set accordingly. The installation menu still contains...

That's good news, glad it worked out that way for you. I was thinking the warranty in 2006 may have been 5 years.

For the most part they are plug and play, but there are some settings the...

No they do not come in half-ton sizes as you think. With a ~20 k btuh cooling load, you'd technically be "oversized" on low stage with a 3 ton, resulting in shorter, less-efficient cycles and less...

That is correct.

The units pictured in #3 and #6 are definitely Tranes. :)

Nice pics, I enjoyed them.

What he said.

Does your new 15 SEER system include a variable speed air handler or furnace? If so, the Prestige IAQ or VisionPRO IAQ can be configured/wired to do dehumidify on demand, which will...

Absolutely agree. I have a surge protector on my outdoor unit (XL20i), as we have relatively frequent power outages when the weather gets bad. For the cost, the added protection made sense to me.

"Right now I'm leaning toward the 95% furnace with A/C option."

If so, you'll want at least the XB13 or XR13 air conditioner with the XV95 over the XB300 (4TTM3). Trane has much nicer units. I...

What temperature did you have to set the previous 2.5 ton system to in order to be comfortable (and allow it to run "constantly")?

Good to see a thread go in this direction. Also consider your heat load figure. Your previous a/c was a 3.5 ton (nominal), and the replacement will be a 4 ton. If the 3.5 ton system was handling the...

Have you considered the Performance 13 SEER model (24ACB3)? A better unit for several reasons in the same efficiency range. Would be worth looking at the product data on this model compared to the...

You probably had experience with the earlier generation models. The newer revised models are better. There were bound to be issues when it first came out, but Trane has done a good job correcting...

There is no "about" when talking different tonnages. You had a 3.5 ton unit that worked well by what you describe, and you are being quoted a 4 ton system. Furnace size/output will be about the same...

Were you planning on sharing the Manual J results with them? It doesn't appear they did their own. I wouldn't necessarily write off the Performance 13, as the price increase may not be significant...