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