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Nest learning thermostat 3 Armstrong air furnace Armstrong air heat pump I need to connect these units as a dual fuel
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Nest thermostat 2020, i have a dual fuel system with a heat pump, gas primary electric secondary. Why does it say electric is my primary and why can't i change it? What
Part 3 - How to install a NEST smart thermostat! Wiring and tech tips. #Rdtips #rdplumbingandheating | By R&D Plumbing & Heating | Facebook
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