According to InterNACHI SOP, is HRV and ERV inspection required or not? Some of the inspectors I know said “No”.
Here is a link to our SOP: https://www.nachi.org/sop.htm
Do you have any specific questions about HRV and ERV systems? I recently did a presentation on these systems for a local ASHI chapter, and can offer good insight on what to look for when you find an ERV/HRV. Especially, if you have a brand name and model number.
I will typically determine if the HRV is functional or not and open it up and check the filters as most people do not clean them.