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rth7500d
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  1. HVAC
    Greetings, My VX80 with heat pump and emergency gas works fine to heat and cool. I have left the thermostat (Honeywell RTH7500D) with the fan ON for the past 10+ years to keep the heat and cooling evenly distributed in the house. When heat/cool is not in demand the blower stepped down to a...
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