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  1. #1

    Confused Trane XR14 or XR15?

    Hi newbie here, I need to buy an outdoor unit for my 2100 sq ft home in Savannah Ga. I have it narrowed down to 2 Trane systems. The first is a Trane XR 15 3.5ton system with a 15 seer rating. The other is a Trane XB 14, 4ton system with a 15 seer rating. Both units are priced the same and I can't decide if I should go with the 3.5 ton XR15 or the 4 ton XB14 ? I have a variable speed hyperion indoor unit (air handler I think its called) installed already, and my home is Spray Foam insulated, no Fiberglass insulation (if that helps) I just want to know what will be the best "bang" for my buck, and what are the major differences, which unit can best handle Hot Georgia weather and which system will be cheaper to operate? etc. Thank-you in advance for helping me.
    Last edited by georgiajill; 07-24-2012 at 10:05 PM. Reason: typo

  2. #2
    Join Date
    Apr 2012
    Location
    winnipeg
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    the one that cools and removes the most moisture from the home is the one I would want.... we can not tell ....your contractor has to size.it....
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  3. #3
    Join Date
    Aug 2007
    Location
    Northern VA 38 degrees N by 76 degrees W
    Posts
    5,062
    Quote Originally Posted by georgiajill View Post
    Hi newbie here, I need to buy an outdoor unit for my 2100 sq ft home in Savannah Ga. I have it narrowed down to 2 Trane systems. The first is a Trane XR 15 3.5ton system with a 15 seer rating. The other is a Trane XB 14, 4ton system with a 15 seer rating. Both units are priced the same and I can't decide if I should go with the 3.5 ton XR15 or the 4 ton XB14 ? I have a variable speed hyperion indoor unit (air handler I think its called) installed already, and my home is Spray Foam insulated, no Fiberglass insulation (if that helps) I just want to know what will be the best "bang" for my buck, and what are the major differences, which unit can best handle Hot Georgia weather and which system will be cheaper to operate? etc. Thank-you in advance for helping me.
    Foamed house and 2100 sq ft equals Manual J8 and and probably less than 3 tons

  4. #4
    that's just it, the contractor says there's no difference, I just get a half ton more with the XB, and that leads me to believe the XB14 isn't as good as the XR15, but I really don't know, I'm just guessing. Also the thermostat he is installing has really good humidity control according to him, but I need more opinions, thanks.

  5. #5
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    you need a contractor you can trust...... an over sized A/C system is useless... an under sized one leads to sweating..... gotta be sized right...... seer means little.....
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  6. #6
    I do trust my contractor, but maybe he's a little misinformed, I just need to know if the XR is better or the XB is better and why.

  7. #7
    Join Date
    Jan 2004
    Location
    PA
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    68,777
    They're both crappy when they are over sized for the home.

    All foam insulation house, maybe 2.5 tons in a hot climate, 2 tons in a mild climate area. Unless you have a good whole house dehumidifier.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  8. #8
    Join Date
    May 2012
    Location
    San Diego, CA
    Posts
    352
    Have contractor do a load calculation and choose the right size unit... don't oversize... it will waste energy and money.
    You can call me Sam

    It should be a crime to be a mechanical engineer in San Diego
    Summer Design Temperature: 83 F Dry Bulb ~ 69 F Wet Bulb (California Climate Zone 7)

  9. #9
    Thank-you everybody for your input. I guess the XB 4 ton is out, being it is oversized. But now I'm not sure if I should get the 3.5 ton XR either. I have scheduled a load test to be done today, I'll let ya'll know the results soon. However, I still need to know what the differences are between a Trane XB and a Trane XR series?

  10. #10
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Get it sized right. Sizing can be all over the place. I can cool my whole 2 story 3200sqft home with 4 tons and it's not spray foamed in the walls... and the design conditions are only 1F cooler (WB & DB) than Savannah... our summer is just shorter and we have a real winter. If a retrofitted spray foam in the walls it would probably be around 3 tons... or 1.5 tons on each floor.

    XB is the lower end almost builder grade. I believe it's the same compressor, but the XR has a more rugged enclosure and a sound blanket so it's a little quieter. I'd go with the XR if I was looking at Trane.

    I personally prefer the contractor I use and he sells Carrier. I like their equipment too. If he sold Trane, I'd have Trane in my house.

    Are you getting a furnace or heat pump?

  11. #11
    I'm getting a heat pump.

  12. #12
    Join Date
    Aug 2010
    Location
    West Monroe, LA
    Posts
    1,537
    Quote Originally Posted by georgiajill View Post
    Thank-you everybody for your input. I guess the XB 4 ton is out, being it is oversized. But now I'm not sure if I should get the 3.5 ton XR either. I have scheduled a load test to be done today, I'll let ya'll know the results soon. However, I still need to know what the differences are between a Trane XB and a Trane XR series?
    The XB 13 & 14 compared to the XR 13 & 14. They both offer 10 year parts & compressor warranty. The color of the condenser/heat pump will be a different and the sound blanket is on the XR so is a little quieter. All in all the same system & warranty. We install a lot of XB14 systems do to good seer rating when matched with high eff. Coil & furnace.

  13. #13
    Thanks Duckman! I talked to my installer yesterday, he said the reason he gave me a higher ton system is so that the unit will properly take out humidity, and with the 100 degree plus days we've been getting the unit will be able to cool down to the temp I want (my current unit at my rental home won't go lower than 85 degrees no matter what I set it to, and it runs all day long) does all this sound right?

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