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I'm installing a Nest thermostat:

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How do i connect the blue and red wire? Nest tech said i have two transformer.. do i split them into RH, and Rc?

  • Can you post photos of the wiring at the indoor unit (air handler) for your system? What do you have for heat for that matter? (A furnace? A boiler? Neither? Both?) – ThreePhaseEel Dec 19 '18 at 0:57

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