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  1. #27
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,196
    Unless you put a manual switch on backup or use a Vision Pro with backup shut off above a certain temp, you may not get around having backup come on.

    Houses have a balance point where the heat loss is the same as the heat pump's output. Near or below that point, you WILL NOT warm the house backup without backup. It can't be done no matter how smart the stat.

    If you are in a mild climate, I'd get the Vision Pro and lock the backup out at as cold a setting as you can.

    As for high end York, they have the Stealth which is a TS R22 unit and the Affinity 15 which is a R410a with unloading scroll.

    Has the XL16i been trouble? The models with the 2 clunker recips I hear tend to chew up the little guy in heat pumps.

  2. #28
    Join Date
    Jan 2005
    Posts
    340
    Originally posted by marca
    Any recommendations on a reliable thermostat that will bring up the temperature gradually in 2-3 degree increments while NOT activating aux. heat.
    Any of the Honeywell Adaptive Intelligent Recovery™ (now Smart Response™) thermostats will do this automatically.

  3. #29
    Join Date
    Jul 2003
    Location
    Philadelphia Pa.
    Posts
    461
    I thougt everything under xl14 had recip compressor, and that from xl14 upward the compressor was scroll.

  4. #30
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,196
    With the exception of the XL19i, pretty much everything 12 SEER and up is now scroll except 1.5 & 2 ton single stage.

  5. #31
    Join Date
    Jul 2003
    Location
    Philadelphia Pa.
    Posts
    461
    Thanks baldloonie. Why would trane exclude 1 and 2 ton units from being scroll?

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