I have a new dual fuel heating system in my house (replaced my old heatpump) and I need some help programming the thermostat. The system is an air heat pump with and oil furnace backup.
The (Honeywell VisionPro) thermostat has an external temperature sensor. I can set the thermostat to turn off the compressor and use just oil at some cutover temperature (when it is too cold for the air heat pump to compete with oil).
What temperature would you recomend?
I asked the installers and (as if in a comedy show) they gave their answers simultaneously and they were 20 degrees apart. (seems like a wide window)
The heat pumps is a brand new 4-ton Bryant Preferred Series air heat pump (up to 15 SEER / 8.5 HSPF) . The slightly older hot air furnace is a ThermoPride oil furnace in good shape. (81.6 AFUE).
Thanks in advance for your advice.
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