< or > 90% efficiency oil furnace?

Discussion in 'Central Heating' started by paulmars, Feb 21, 2018.

  1. paulmars

    paulmars

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    I just bought a new thermostat for my central oil HVAC unit. Honeywell TH4110D. I can set it for oil heater <90% efficiency or >90% efficiency. I'm not sure which to set it at. I am hoping that my unit is not exactly 90%, cuz then I'm screwed. Bryant model 58cma105-12 installed in year 2001. Bryant wont help me. they insist that i pay a service tech to come here and tell me. That ain't happening.

    Also, compressor cycle rate setting 3 is recommended for most compressors. I hope that is what I have.

    Your thoughts?

    tks,
    pa
     
    paulmars, Feb 21, 2018
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  2. paulmars

    WalterHanson

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    It should be <90% efficiency

    Most current models do not exceed 86%
     
    WalterHanson, Jun 6, 2018
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  3. paulmars

    WalterHanson

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    What do you know about Furnace Gas?

    All new gas furnaces available today are high-efficiency, with an Annual Fuel Utilization Efficiency (AFUE) rating of 90% to 98%.

    A gas forced-air heating system goes into action when the thermostat tells it that the room temperature has dropped below a preset comfort level. The thermostat sends a low-voltage electrical signal to a relay in the furnace, which signals a valve to open and deliver natural gas to the burners and for the blower to turn on.
     
    WalterHanson, Jun 14, 2018
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