I personally don't like the idea of moving units. Asking for trouble. I would just put in an XR-15 to save the money. I don't understand the large increase in price since you had one installed a couple years ago.

I agree with above post. I also don't like the idea of relocating a system. Did they plan on removing the air handler as well?

What size are you looking at? I assume both the existing XL16i and XR15 are three ton units?

I am glad you are happy with the XL16i. This condenser has a problematic history and is known for poor dehumidification.

I personally would stick with the XR15 with TAM7 var speed air handler, HW VP IAQ thermostat to be set up with dehumidify on demand, and Trane's two stage 7/12 KW heat strip. Dealer will need to check your breaker box capacity. You might consider a whole house air filter media cabinet.

You might also get a quote on sister model AmStd Heritage 15. Just as good as Trane and really about identical to the XR15.

Post back.

IMO
Good Luck!

Moving a condenser is always risky. I am surprised the contractor would make this suggestion. Moving the condenser make affect the Trane warranty.

There is not much saving in energy between a single and dual compressor condenser. The dual compressor is designed for better comfort and lower humidity.

You can get good humidity removal with the variable speed blower.

We love the 16i and had it moved to our other house. It's a 4 ton and they had to install another return. So far, everything is working great at both houses.

Glad it's worked out for you. Stil a dumb idea and something to be said about not being sized correctly for either home.

IMO