High-efficiency furnace modes
This might not be the best forum for this question but here it goes…..I just got a high efficiency dual stage furnace installed (LENNOX EL296E Series Dual-Stage 96% Efficient Gas Furnace). I don’t think the blower is variable but comes with a consistent torque motor. It also came with a Nest thermostat. My questions is how does the system know what stage the furnace should run in and what speed the blower should be at? Does the furnace make this determination or is the Nest thermostat telling it what mode to operate in?
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