yes, I did (bought and installed an HRV) in my house.
Starting this year: according to the new construction code: all houses built in Vancouver must have HRV installed, amongst some other things.
the HRV in construction code started about 4 yrs ago (around 2008 or 2010 Vancouver contruction code), so don't be at all surprised if most new houses built during or after that year already came built in with HRV.
Unfortunately, all those houses I've seen (with HRV) so far, most of them has been under-spec'ed or the builder bought the cheepest units possible (bought a unit (spec'ed for 2000~2500sq ft and installed it in a house >3000sq ft; or bought one that is of very old energy consumption spec (continuously running @ over 100+Watts/hr, as opposed to most recent ones that are around 40Watts/hr)
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