What are the HRV or ERV options for 40-yr 2-storey 2000 sq ft home?

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What are the HRV or ERV options for 40-yr 2-storey 2000 sq ft home?

T Newell Published: July 17, 2020, 1:59 p.m.Last updated: Sept. 25, 2020, 9:59 a.m.

The local ventilation consultants wish to install a second ducting system, in addition to the returns and ducts for a electric-wood forced hot air system

For a house of its age and depreciation, and our likely ten additional years ownership, the investment of $4000 is too high

The street wise contractors say, just open a window

In Aug 2019 we installed a mini-split which heats the upstairs 800 sq feet until outside  temps fall to zero degrees C, after which the forced hot air must supplement it

Have any new options appeared on the market that I can consider?

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