ERV – combined one or two vs independent one or two?
Building a reverse 1.5 with walkout basement. 2300 sq ft finished on main level and 2000 finished on lower level. Looking at two conventional HVAC systems. If we go with ERV intergrated with air handlers, presumably need two ERVs. If we go with an independent duct ERV system, do we need two ERVs duct systems or will one independent ERV duct system work for the whole house? Which system makes the most sense? Thanks.
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