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    earth777's Avatar
    earth777 Posts: 6, Reputation: 1
    New Member
     
    #1

    Nov 10, 2008, 12:04 AM
    T-Stat replacement recommendation
    Hello,

    I have an old Honeywell Thermostat T8195B. I was wondering what would be a good replacement. Only have furnace heating. No cooling.

    Also, the location of the T-stat is in the a place where there is no forced heat vent so it is not the place to measure temperature. I know I can relocate it but I am looking for a wireless remote sensing option if these things exist. My thinking is that I can put the sensor in the bedroom area to control to it.

    Thanks!
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Nov 10, 2008, 04:29 AM
    You want the thermostat located where there is not much air movement. That gives the thermostat a good area for sensing the correct temperature and not around where drafts or moving heated air will cause the thermostat to have a inacurate reading.

    There are many different models of thermostats available and from many different vendors.

    Honeywell here under hyome products. Just look around

    Default - Honeywell Environmental And Combustion Controls


    White Rodgers here

    http://www.white-rodgers.com/wrdhom/...hermostats.pdf

    VentStar here

    Venstar Thermostat Accessories Venstar Thermostats and Accessories - VenstarThermostats.com
    earth777's Avatar
    earth777 Posts: 6, Reputation: 1
    New Member
     
    #3

    Nov 10, 2008, 08:30 PM
    Thanks for the quick feedback. Did some research and am thinking of getting one of the two following Honeywell t-stats from my local store

    RTH230B $39
    RTH6400B $70

    Will either work? I have a basic gas furnace with no cooling. Also, any recommendation on which one should I go for?

    Thanks.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #4

    Nov 10, 2008, 08:53 PM
    Take your pick they will both work. You will probably need to use batterys also.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
     
    #5

    Nov 10, 2008, 09:03 PM

    If you only have two wires to your thermostat, I would go with a thermostat that doesn't require a battety to operate(battery dies, furnace dies). Are you looking for a digital thermostat, or would you be contempt with a basic t87f honeywell.
    earth777's Avatar
    earth777 Posts: 6, Reputation: 1
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    #6

    Nov 10, 2008, 09:45 PM
    Quote Originally Posted by mygirlsdad77 View Post
    if you only have two wires to your thermostat, i would go with a thermostat that doesnt require a battety to operate(battery dies, furnace dies). Are you looking for a digital thermostat, or would you be contempt with a basic t87f honeywell.
    I prefer a digital t-stat. my old T8195B had power in addition to batteries? Is that the C wire? I always thought the battery was for backup only. IS it different on the RTH230B?
    MarkwithaK's Avatar
    MarkwithaK Posts: 955, Reputation: 107
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    #7

    Nov 10, 2008, 10:12 PM

    If you have a common then you will not need the batteries. If you do relocate the stat remember that it should be placed on an INTERIOR wall, about 5 feet up from the floor.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #8

    Nov 10, 2008, 10:17 PM

    Batteries may still be required. With a C wire, the batteries are not ESSENTIAL.
    earth777's Avatar
    earth777 Posts: 6, Reputation: 1
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    #9

    Nov 10, 2008, 10:21 PM
    Quote Originally Posted by MarkwithaK View Post
    If you have a common then you will not need the batteries. If you do relocate the stat remember that it should be placed on an INTERIOR wall, about 5 feet up from the floor.
    I just read the installation instructions for the RTH230B and there is no C terminal. I guess it is 100% based on batteries.

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