HRV choice help
I am getting slightly behind schedule on ordering an HRV for my double stud wall house here in southern New Hampshire. I am looking for help on choosing a model of HRV for my particular application (or other balanced ventilation system). I have done what seems like endless research on ventilation systems, negative pressure, positive pressure, balanced systems…as well as reading through all the ashrae 62.1 debacle and read most of what I could find from Joe Lstiburek and of course Martin’s book Musings of an Energy Nerd. Here is where I am at with my ventilation plan, and feel free to poke holes in it (pun intended) :
Balanced HRV with ducting
160 cfm range hood (makeup air from opening a kitchen window)
Panasonic whisper??? in each bathroom with possibly a powered intake makeup air fan in each bathroom as well (this may be a custom setup)
Backdraft dampers where required
House specs :
Double stud wall
One mini split per floor
Full electric house (grid tied solar)
Triple pane Matthews Brothers Windows
Serious air sealing
700 sq ft per floor (interior)
Open concept 1st floor (1 bath)
Typical 2 bedroom second floor (1 MAIN bath)
2 adults, 3 dogs
Night time open bedroom doors
Blower door specs coming soon, although Joe Lstiburek says he doesn’t like to size ventilation off of blower doors. I expect the house to be very tight though.
I know opinions and science is changing fast in this area. What is everyone’s current recommendations for ventilation? I heard something like half of ashrae 62.1…
My ventilation install budget is around $2500.
Any HRV brand/model opinions?
Where can I source the plastic ducting I see in everyone’s HRV installs and can’t seem to find?
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