I have been trolling here for awhile and finally have a question I haven't found already answered. For background: I have a fully closed cell spray foam encapsulated new home, so rafters to slab all sealed. Because the build started to get to a breaking point with cost and we were way behind I opted to leave out the V in the HVAC system and use strategicly opened windows to get my ventilation for the time being, so I am retrofitting now. I am in central New Jersey, house is 4000 sqft spread fairly evenly across finished basement, first and second floors. I have two Lennox XC21 2ton ACs and two G61V 45MBTU 94% AFUE furnaces one in the "attic" and one in the basement.
I have concluded that I want a venting dehumidifier to pressurize the house, but I think I may need to add an ERV/HRV, maybe two, to get sufficient efficient ventilation. The first question I have is: Can I connect the fresh air intake of a UA 90H dehumidifier directly to the fresh air supply of an ERV/HRV and still balance the ERV/HRV and improve on the energy efficiency of just installing them separately?
My thinking was that I could then keep the number of 6" holes in the house down to two and maybe improve on the efficiency of the venting dehumidifier. Venting dehumidifier and ERV/HRV would be in the conditioned "attic". I would remove two bathroom fans on the second level and connect them to the exhaust on the ERV/HRV. I would duct the dehumidifier return down to the basement and the supply into the second level furnace supply trunk. All bedrooms are on the second floor.
I have been investigating the Venmar AVS EKO 1.5 ERV or HRV, but I have not determined if I would really benefit considerably from the ERV over the HRV. That is as far as I have gotten.
Thanks in advance for any guidance.