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What is the advantage of a two stage furnace?
Two-Stage Furnace Pros and Cons The ability to switch between two power modes makes two-stage furnaces more energy-efficient than their single-stage counterparts. The low power mode allows the unit to conserve energy as well as reduce temperature fluctuations and uneven heating in your home.
How does a 2 stage high efficiency furnace work?
A model with two-stage heating contains a two-stage gas valve and a variable-speed blower motor. This allows the furnace to run at a lower setting in milder weather and a higher setting in very cold weather.
Does a two stage furnace run all the time?
Two Stage Furnace Here your furnace will actually be running more consistently. Not as much off and on as a single stage but will still turn off when needed. Usually, these furnaces usually run around 90-95% depending on if it has an ECM motor or not. Here you will start to see more savings on your energy bills.
Are high efficiency furnaces worth it?
High-efficiency furnaces are better at transferring the heat generated into your house, with as little air wasted as possible. They require less energy to run than traditional furnaces. But nowadays, a furnace must have an AFUE rating of at least 80 percent, so that’s what most traditional furnaces have.
What does it mean to have two stage furnace?
Two stage heating describes a furnace with two levels of heating output. First stage (low fire) will run between 70-80% of the rated capacity of the furnace. When a furnace initially turns on it will start in this low fire mode.
When does a furnace go to high fire mode?
When a furnace initially turns on it will start in this low fire mode. The furnace will go to second stage (high fire) based on one of two conditions. 1) The time the furnace has been operating or 2) if the thermostat senses it needs to raise the temperature more than two degrees.
How does the valve on a furnace work?
The furnace’s control board and thermostat are responsible for controlling valve position. After reaching the programmed temperature settings on the thermostat, the furnace shuts down. On extremely cold days, when extra heat is needed, the valve opens fully, and runs full blast until the desired temperature is achieved.
How does a heat exchanger in a furnace work?
Once the valve is opened, gas travels to the burner where it is ignited by the pilot light. The burner heats the heat exchanger, which in turn heats the air for your home. A blower assembly including the fan and motor is used for air circulation.