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asked by Alex on October 5, 2012
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Jeff Schwarz answered on October 12, 2012
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"Stage" is a unit of capacity. A system, heating or cooling, has a 100% capacity total and each stage is a fraction of that so... say your cooling total capacity is 3 tons then each stage might be 1.5 tons. this done to better manage output of the system and not overheat or cool the space by running more capacity than is needed. Hope that helps.
John N. answered on December 5, 2013
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Whether your system allows it is a matter of existing equipment. Either you already have a two-stage a/c or heat pump or you do not.
Mr. Lauren Berns answered on March 12, 2013
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