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Reply to "HVAC replacement - looking for advice from those who have BTDT"
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[quote=Anonymous][quote=Anonymous]I second the comment about variable stage (or multi-stage, or modulating). In my experience a modulating gas furnace and two-stage air conditioner made a big difference in comfort. Presumably heat pumps are available with similar.[b] It eliminates the mentioned concerns about the system being oversized for some seasons, because it changes its capacity as needed[/b].[/quote] I am not sure if this is true. My understanding is you lose the efficiency of the variable stage in the summer when it is oversized. Since it is oversized it can't run at the low level.that you actually need so it will shut on and off like a single stage. In addition to costing you more in electricity bills it won't do as good s job removing humidity.[/quote]
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