What is two-stage heating?
As you start to explore heating options for your home or office, you may need to think about the types of furnaces on the market. A two-stage heating furnace may work best in settings requiring improved efficiency and a subtler heating experience. This is what you need to know to decide if a two-stage furnace is right for your space. What Two-Stage Heating Actually Means Furnace stages refer to the amount of heat allowed to pass through the system. A valve controls the burner, and different settings change the position of the valve to influence the heat output. Most furnaces (single-stage furnaces) have one setting: you can turn them on or off. When using a single stage system on milder days, an owner may notice the system cutting on and off frequently to maintain the desired indoor temperature. Two-stage heating systems, on the other hand, have a setting in addition to the on/off position. In a two-stage system, thermostat settings can completely or partially open the valve to allow heat to pass through. At the fully open stage, the furnace operates on high. At the partially open stage, the furnace releases a reduced level of heat (at about 65% of