Is it common for HRVs to recycle some of the indoor air rather than exhaust it?
Years ago, I had installed a Venmar HRV and wondered why I could smell cooking odours from a supply vent in the basement even though I had dedicated ducting.
I called Venmar about it and they told me that they included some recycled air in the fresh air supply so that the fresh air would not feel so cold.
Is this still common? Do all manufacturers do this?

Thanks,
Aaron