Unlike single-stage models that operate at full power or not at all, this type of heating system modulates its output to match the precise needs of your living space. This ensures that even during the coldest snap, the indoor environment remains cozy and unaffected by the freezing weather outside.
Achieving Precise Temperature Control with Two-Stage Furnace Technology
This results in loud operational noise and temperature swings of several degrees. A single-stage furnace operates like a light switch—either fully on or completely off.
Comparing Single-Stage and Two-Stage Technology A direct comparison highlights the advantages of this technology. The burner ignites at maximum capacity while the blower increases its speed to deliver a powerful surge of hot air.
Achieving Precise Temperature Control with Two-Stage Furnace Technology
Low-Stage Operation for Efficiency When the furnace enters low-stage mode, it consumes less energy while still delivering a steady stream of warmth. During milder weather or when the thermostat calls for a small amount of warmth, the system runs in the low-fire stage.
More About How does a two-stage furnace work
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