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    mickiemck's Avatar
    mickiemck Posts: 1, Reputation: 1
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    #1

    Feb 14, 2009, 02:11 PM
    Trying to install programmable thermostat
    Hello, I want to install a programmable thermostat for cost/energy savings but not sure which one I need. Looking for some advice.

    Here's what I have now, as far as I can tell..

    There is no indication on the old thermostat what brand it is (just has name of the company that installed it), but I see everything else on the system is Goodman. I found some installation instructions for the air handler that have some thermostat information, but it list two different possible thermostat model#s: CHT18-60 or HPT18-60. I think I have a heat pump with emer. Heat.

    Existing wiring is 6 wires:
    Y - yellow
    O - orange
    W2 - white
    G - green
    R - red
    E - brown

    What type of thermostat do you recommend? It seems all the ones I have looked at say they are not compatible.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #2

    Feb 14, 2009, 04:08 PM
    Based on the description you have given, it sounds like you have a 2-stage heat pump system. If this is true, you will need a 2-stage heat/1-stage cool thermostat that is compatible with heat pump systems. To maximize setback benefits with a heat pump system, choose one that offers adaptive, or "smart" recovery.
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